Zeitschriftenartikel: „Smap 3D Plant Design“

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Hung, Che-Lun, und Guan-Jie Hua. „Cloud Computing for Protein-Ligand Binding Site Comparison“. BioMed Research International 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/170356.

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The proteome-wide analysis of protein-ligand binding sites and their interactions with ligands is important in structure-based drug design and in understanding ligand cross reactivity and toxicity. The well-known and commonly used software, SMAP, has been designed for 3D ligand binding site comparison and similarity searching of a structural proteome. SMAP can also predict drug side effects and reassign existing drugs to new indications. However, the computing scale of SMAP is limited. We have developed a high availability, high performance system that expands the comparison scale of SMAP. This cloud computing service, called Cloud-PLBS, combines the SMAP and Hadoop frameworks and is deployed on a virtual cloud computing platform. To handle the vast amount of experimental data on protein-ligand binding site pairs, Cloud-PLBS exploits the MapReduce paradigm as a management and parallelizing tool. Cloud-PLBS provides a web portal and scalability through which biologists can address a wide range of computer-intensive questions in biology and drug discovery.

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Doan, Thien Minh, Khoi Nguyen Nguyen Tran, Tuan Dinh Le, Cang Trong Vo und Chung Quang Dinh. „SHIP ASSEMBLY DESIGN BY 3D MODELING“. Science and Technology Development Journal 14, Nr. 4 (30.12.2011): 53–64. http://dx.doi.org/10.32508/stdj.v14i4.2007.

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Since Vietnam began to open up to the outside world in the 1990s, its national shipbuilding industry has witnessed great development. So far it has assumed a share of the international shipbuilding market. To build ships for foreign custumers is obviously more complicated than for dosmetic shipowners. Nowadays, the computer technology has been advancing greatly. So, to compete with foreign designs, we have also devised a strategy to develop its techniques and technology by acquiring the latest software from advanced shipbuilding countries like United States, Europe, Korea, Japan, China, … Among the special modern softwares – Plant Design Management Systems (PDMS) is a new trend in the shipbuilding industry. Indeed, the naval architects and marine engineers can design, modify, manage hull construction and outfitting their database on the 3D object with its … and their drawing travelled directly to CNC machines. All in all, we have little time to catch this new techniques of the global. This is both a challenge and an opportunity to the national shipbuilding industry.

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KAWAGUCHI, Yuji, Yoshinori SATOH, Shizuka KIMURA, Tetsuo ENDOH, Masahiro MOTOHASHI und Makoto HATAKEYAMA. „216 Automated 3D shape recognition system for plant design and analysis“. Proceedings of the Symposium on Evaluation and Diagnosis 2012.11 (2012): 146–49. http://dx.doi.org/10.1299/jsmesed.2012.11.146.

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Lee, Hyunoh, Chiho Noh, Seyun Kim, Byung Chul Kim, Jinpyo Park, Duhwan Mun und Soonhung Han. „Neutral model-based interfacing of 3D design to support collaborative project management in the process plant industry“. Journal of Computational Design and Engineering 8, Nr. 3 (13.05.2021): 824–35. http://dx.doi.org/10.1093/jcde/qwab017.

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Abstract The three-dimensional (3D) design data employed in a process plant construction project are generated during both the basic design and detailed design stages and are used for various purposes throughout the life cycle of the project. After the design stage, 3D design data are converted to a lightweight 3D format and utilized to support procurement, construction, and audit work in a collaborative project management system. However, significant time and cost are incurred when separate interfaces to convert design data are developed for each plant 3D computer-aided design (CAD) system. As an alternative, a method exists to integrate an interface using a neutral model. After translating the 3D input design data for the plant 3D CAD system to a neutral format, this study proposes an interface for use in collaborative project management by converting the data into a lightweight 3D model. In addition, detailed techniques for implementing the proposed interface are described. To verify the validity of the proposed neutral model-based 3D design data interface, translation, inspection, and lightweighting experiments are performed using 3D design data for a synthesized natural gas production plant project.

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Zhiyong Su, Lang Zhou, Guangjie Liu und Yuewei Dai. „Smart-Line Based Watermarking Scheme for 3D Computer-Aided Plant Design Models“. International Journal of Digital Content Technology and its Applications 7, Nr. 5 (15.03.2013): 113–22. http://dx.doi.org/10.4156/jdcta.vol7.issue5.14.

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Mitkowski, Piotr T., und Sylwia K. Bal. „Integration of Fire and Explosion Index in 3D Process Plant Design Software“. Chemical Engineering & Technology 38, Nr. 7 (01.06.2015): 1212–22. http://dx.doi.org/10.1002/ceat.201400644.

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Tian, Chun Yao, und Guo You Li. „A Virtual Reality Based 3D Simulation Modeling of Ethylene Cracking Plant“. Advanced Materials Research 765-767 (September 2013): 3110–14. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.3110.

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Using virtual reality computer simulation technology, by researching of the ethylene production process equipment and production process, Ethylene cracking plant modeling and simulation training system development were completed. Ethylene cracking device 3D modeling development scheme and process were introduced, which include the use of 3DMAX software for 3D modeling design, combined with the virtual reality software realization of human-computer interactive function design. Based on Virtual reality technology, 3D simulation system of ethylene plant was realized.

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Lv, Xi Min, Yu Fei Liu, Hai Bo Gao, Liang Ding, Jian Guo Tao, Ke Rui Xia und Zong Quan Deng. „Design of Underwater Welding Robot Used in Nuclear Plant“. Key Engineering Materials 620 (August 2014): 484–89. http://dx.doi.org/10.4028/www.scientific.net/kem.620.484.

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Through the analysis of operational requirements and environmental characteristics of nuclear power plant pool, we propose the design of underwater welding robot and establish the 3D model. Then, we introduce special functions and system composition of the robot in detail. After that, we propose the cooperation of the moving system and operating system, for the reason that the center position of gravity and buoyancy change when the operating system moves. Finally, we simply introduce control system components, control strategy and simulation results of the robot.

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Pereira, Tatiana, Sónia Barroso und Maria M. Gil. „Food Texture Design by 3D Printing: A Review“. Foods 10, Nr. 2 (03.02.2021): 320. http://dx.doi.org/10.3390/foods10020320.

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An important factor in consumers’ acceptability, beyond visual appearance and taste, is food texture. The elderly and people with dysphagia are more likely to present malnourishment due to visually and texturally unappealing food. Three-dimensional Printing is an additive manufacturing technology that can aid the food industry in developing novel and more complex food products and has the potential to produce tailored foods for specific needs. As a technology that builds food products layer by layer, 3D Printing can present a new methodology to design realistic food textures by the precise placement of texturing elements in the food, printing of multi-material products, and design of complex internal structures. This paper intends to review the existing work on 3D food printing and discuss the recent developments concerning food texture design. Advantages and limitations of 3D Printing in the food industry, the material-based printability and model-based texture, and the future trends in 3D Printing, including numerical simulations, incorporation of cooking technology to the printing, and 4D modifications are discussed. Key challenges for the mainstream adoption of 3D Printing are also elaborated on.

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Hua, Lei, Chongcheng Chen, Liyu Tang und Ying Jiang. „Compact Expression of Non-manifold Structure for 3D Virtual Plant“. Journal of Computer-Aided Design & Computer Graphics 30, Nr. 10 (2018): 1810. http://dx.doi.org/10.3724/sp.j.1089.2018.16984.

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Xu, Jin Jin, Zhong Wen, Kai Feng Zhang, Zheng Gang Guan und Chen Ye. „Design and Development of Refueling Machine Operation Simulation System in Nuclear Power Plant“. Applied Mechanics and Materials 373-375 (August 2013): 1703–9. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.1703.

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In order to improve the effect of refueling training in nuclear power plant, the simulation system of refueling machine was designed and developed, combining the virtual reality technology with a real control console. The 3D virtual refueling environment of nuclear power plant was established by 3D modeling. Signals from touch screen and console are gathered by PLC and transmitted to PC graphics workstation, control the motion of virtual refueling machine, which realize the refueling operation simulation. The operation in failure modes was also realized in the system through the programming of failure database. The results show that the system runs normally and can simulate refueling operation in normal and abnormal modes, the training of refueling personnel is implemented effectively.

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Fu, Jian, Ke Dong Tang, Xin Li Wen, Xue Mang Guo und Ji Wei Zhao. „Analysis of Bulb Turbine Hydropower Station Plant with 3D Finite Element Method“. Advanced Materials Research 243-249 (Mai 2011): 4539–43. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.4539.

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The overall structure of a hydropower plant with bulb tubular units is calculated and analysed in 6 kinds of load cases, and the maximum stresses in different directions and the positions where the maximum stresses appear in the hydropower plant structure. The conclusions show that the plant is safe and the design is reasonable.

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Kim, Jaewoo, Woo Hyun Kang und Jung Eek Son. „Interpretation and Evaluation of Electrical Lighting in Plant Factories with Ray-Tracing Simulation and 3D Plant Modeling“. Agronomy 10, Nr. 10 (11.10.2020): 1545. http://dx.doi.org/10.3390/agronomy10101545.

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In plant factories, light is fully controllable for crop production but involves a cost. For efficient lighting, light use efficiency (LUE) should be considered as part of light environment design. The objectives of this study were to evaluate and interpret the light interception, photosynthetic rate, and LUE of lettuces under electrical lights using ray-tracing simulation. The crop architecture model was constructed by 3D scanning, and ray-tracing simulation was used to interpret light interception and photosynthesis. For evaluation of simulation reliability, measured light intensities and photosynthetic rates in a growth chamber were compared with those obtained by simulation at different planting densities. Under several scenarios modeling various factors affecting light environments, changes in light interception and LUE were interpreted. The light intensities and photosynthetic rates obtained by simulation showed good agreement with the measured values, with R2 > 0.86. With decreasing planting density, the light interception of the central plant increased by approximately 18.7%, but that of neighboring plants decreased by approximately 5.5%. Under the various scenarios, shorter lighting distances induced more heterogenetic light distribution on plants and caused lower light interception. Under a homogenous light distribution, the light intensity was optimal at approximately 360 μmol m−2 s−1 with an LUE of 6.5 g MJ−1. The results of this study can provide conceptual insights into the design of light environments in plant factories.

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Lyu, Weifeng, Wenwang Ran, Jie Liu, Jingyu Zhang, Shaohua Tang und Jun Xiong. „Development and Validation of Rapid 3D Radiation Field Evaluation Technique for Nuclear Power Plants“. Science and Technology of Nuclear Installations 2020 (03.06.2020): 1–7. http://dx.doi.org/10.1155/2020/8815650.

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Rapid 3D radiation field evaluation is the key point of occupational dose optimization for design and operation of nuclear power plant. Based on the requirement analysis from designers and operators of nuclear power plant, three key technical issues are identified and solved through the development of the RPOS system, which are rapid calculation of 3D radiation field, reconstruction of the calculated 3D radiation field based on measured data, and occupational dose optimization based on 3D radiation field. Operational measurements of dose rate from in-service nuclear power plants are used to test the RPOS system, which shows that accurate 3D radiation field can be rapidly generated by the RPOS system and effectively used on the occupational dose optimization for on-site workers. The applications of the established rapid 3D radiation field evaluation technique on HPR1000 unit design provide evidence on its feasibility in a large scale, the improvement of radiation protection design efficiency and the enhancement of ALARA assessment and justification for nuclear power plants.

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Xue, Chuan, und Ying Hu. „The Small Road Surface Shot Blasting Cleaning Machine Design“. Advanced Materials Research 1061-1062 (Dezember 2014): 858–61. http://dx.doi.org/10.4028/www.scientific.net/amr.1061-1062.858.

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The design of a small road surface shot blasting cleaning machine, using the motor driven wheel blasting high-speed rotation, the pellet material (steel shot or sand) at high speed and certain Angle to throw, throw rock formed certain fan type flow, impact to the road to play the role of a blasting and removing the effect of the residue .Then, projectile and dust into the separator, separator will be tiny and dust separation, dust into the dust collector, and the projectile into the shot blasting machine to recycle. Complete road surface shot blasting cleaning machine of shot blasting machine, sand pill purification plant design. By using solid works 3D drawing software of 3D modeling and virtual assembly.

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Lee, Hyunoh, Yoenju Bae, Soonjo Kwon, Byung Chul Kim, Duhwan Mun und Soonhung Han. „Development of a Neutral Model-based Catalog Generation System to Support 3D Design of a Plant“. Transactions of the Korean Society of Mechanical Engineers - A 42, Nr. 8 (31.08.2018): 753–63. http://dx.doi.org/10.3795/ksme-a.2018.42.8.753.

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Jeon, Youngjun, Byung Chul Kim und Duhwan Mun. „Development of a System for Visualization of the Plant 3D Design Data Based on ISO 15926“. Transactions of the Society of CAD/CAM Engineers 20, Nr. 2 (01.06.2015): 145–58. http://dx.doi.org/10.7315/cadcam.2015.145.

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Gao, Qiang, Ke Feng Zhou, Sen Gai Yang, Huan Mao und Jie Zhu. „Design and Development on Full Scope V&V Simulator of Nuclear Power Plant“. Applied Mechanics and Materials 496-500 (Januar 2014): 1385–89. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.1385.

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In order to strengthen the ability of nuclear safety regulatory and avoid nuclear accident, full scope V&V simulator is designed and developed. By using RELAP-3D and MELCOR procedures coupled with the simulation platform, it achieves a whole conditions simulation which contains steady-state condition, transient condition and severe accident condition. The full scope V&V simulator can be used to do the design verification, operation verification, nuclear emergency and severe accident management program verification.

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Lim, Enmi, Kiyoshi Umeki und Tsuyoshi Honjo. „Application of Virtual Reality and Plant Modeling for Participation in Urban Planning and Design“. International Journal of Virtual Reality 8, Nr. 2 (01.01.2009): 91–99. http://dx.doi.org/10.20870/ijvr.2009.8.2.2730.

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In landscape planning, visualization of landscape is a powerful tool for public understanding and for selection of alternative plans. In recent years, three dimensional (3D) computer graphics (CG) were used as visualization tools of environment because it has the ability to accurately simulate the changes caused by a proposed plan. In particular, virtual reality (VR), which enables to walk through in a modeled park or in a visualized forest, was considered as the advanced technique of landscape visualization. In this study, we developed a landscape visualization system with graphic user interface, which we named VR-Terrain (GUI version), to generate the virtual reality image easily by using VRML (Virtual Reality Modeling Language) and plant modeling techniques. In order to test the feasibility of the landscape visualization system, we applied the system to Ichinoe Urban Design Plan. Ichinoe is located at Edogawa Ward, Tokyo. There is a Sakaikawa Shinsui Park with water space surrounded by large amount of green. In the case study, we simulated the landscape of Sakaikawa Shinsui Park with about 200 plants and 300 buildings. We used the images simulated by VR-Terrain to explain the concept (such as building height limit) to the residents in the public meetings. It took about 30 hours to make the 3D model of the town. After ten minutes of training, anybody can walk through in the simulated town freely. The results showed that the VR image by the system helped the public understanding of the concept of the urban plan.

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Ji, Yu Jie, und Ming Wan. „3D Model of the Picks Configuration on the Cutting Head Based on Phyllotaxis Theory“. Applied Mechanics and Materials 711 (Dezember 2014): 70–73. http://dx.doi.org/10.4028/www.scientific.net/amm.711.70.

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In the millions of years plants continue to develop and evolve for the competition of survice, the macroscopic and microscopic structure and morphology of plants may seem simple, but its specific functions, is man-made design unmatched. By observing the distribution of plant leaves, bionic design of the picks on cutting head based on phyllotaxis theory and establish its 3D model ,which fills its gap in the field of bionic design.

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Chun, H. K., S. Y. Han, B. S. Kim, K. H. Jin, M. N. Kim und Y. G. Son. „Gong-ju WTP, the first full-scale membrane plant for drinking water treatment in Korea: the result of detailed design“. Water Supply 8, Nr. 1 (01.04.2008): 49–55. http://dx.doi.org/10.2166/ws.2008.005.

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The construction of Gong-ju WTP (30,000 m3/day), the first practical full-scale integrated membrane system in Korea, has been launched after 6 months of pilot plant operation and 10 months of detailed design. Powdered activated carbon process was applied in order to remove taste and odor caused by algae and coagulation process was applied in consideration of reducing membrane fouling in this micro filtration system. Pilot testing concluded that the pressure type of hollow fiber membrane was more suitable for the raw water characteristic and economical aspects than submerged type membrane system. For the best flow distribution of each unit, CFD (computational fluid dynamics) analysis was performed on aspects of pipe arrangement and daily integrity test system was applied to ensure the safety for leakage under the criteria of 5-log removal. In view of the complicated and equipment-intensive nature of this membrane system, a 3D CAD system was utilized to minimize trial and errors of construction in accordance with combination of each equipments rendered by 3D CAD, and also optimised operation and maintenance were verified through the simulation of 3D rendering.

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Rompas, Parabelem Tinno Dolf, Heindrich Taunaumang und Ferry Johnny Sangari. „A Numerical Design of Marine Current for Predicting Velocity and Kinetic Energy“. Indonesian Journal of Electrical Engineering and Computer Science 5, Nr. 2 (01.02.2017): 401. http://dx.doi.org/10.11591/ijeecs.v5.i2.pp401-409.

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One of marine current power plant equipment is turbine. In the design of marine current turbines required variables such as velocity and kinetic energy. This paper presents numerical study on a numerical design of marine current for predicting velocity and kinetic energy in the Bangka strait, North Sulawesi, Indonesia that developed from Yaxum/3D model. This study includes the simulation of velocity and kinetic energy distributions at low and high tide current conditions by two flow rates of 0.1 and 0.3 Sv respectively. The numerical method used to design computational program. Semi-implicit finite difference method used to 3D shallow water flow. It found distributions of velocity and kinetic energy at high tide current condition greater than low tide current condition. The future, these results will be developed in marine current power plant project in the Bangka strait, North Sulawesi, Indonesia.

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Xu, Wei Xing, und Jia Ping Yuan. „Structure Reverse Design and Abrasion-Resistant Performance of Submersible Mixer’s Impeller Based on 3D Solid Model“. Advanced Materials Research 179-180 (Januar 2011): 625–29. http://dx.doi.org/10.4028/www.scientific.net/amr.179-180.625.

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In a wastewater treatment plant, there are some problems that the impellers of submersible mixers were damaged with abrasion and the impellers’ spare parts must be imported. To solve this problem and realize domestic manufacture, based on reverse engineering theory, utilizing three coordinates measuring machine and applications of Surface and Pro/E, then the Pro/E software was used to develop the impeller solid model. The gained impeller model accords with the physical one with high accuracy. By using this model, the manufacture of its mould and research on abrasion-resistant performance as well as the implementation of domestic manufacture of its parts are completed. The new impeller has been employed in this plant and passed field running experiment. The results indicate that its mixing and propelling performance is excellent and abrasion does not happen in more than three months. It has prominent economic and social benefit.

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Yelianti, Upik, Muswita Muswita und M. Erick Sanjaya. „Development of Electronic Learning Media Based 3D Pageflip on Subject Matter of Photosynthetis in Plant Physiology Course“. BIODIK 4, Nr. 2 (03.12.2018): 121–34. http://dx.doi.org/10.22437/bio.v4i2.5858.

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The aim of this research is to develop the electronic learning media on the subject matter Plant Physiology based 3D pageflip. The 3 D Pageflip is the software that can display the learning material, like: power point, text, pictures, photos, animation, student’s worksheet and videos are integrated in one packaging. This research was designed in ADDIE’s model which have five steps, namely: Analyze, Design, Develop, Implement, and Evaluate. This media was validated by design expert and content expert. The qualitative data from expert suggession used to revise this media, while the qualitative data got from the student’s response to this media. This media was validated by design expert twice and got the last score about 44 (91.67%) with very good criteria. Then, the media also validated by content expert and obtanied the score about 36 (80%) with very good criteria. After validated, the electronic learning media trial to the biology student for the small group test with 9 students as a repondent and obtained the score about 48.87 with very good criteria, while the big group trial test with 15 student as a respondent, got the score about 49.87 with very good criteria. In conclussion, this electronic learning media on subject matter Photosynthesis for Plant Physiology course is very good to use in classroom and also individually. Keywords: electronic media, 3D pageflip, photosynthesis, plant physiology Abstrak Penelitian ini bertujuan untuk mengembangkan media pembelajaran elektronik berbasis 3D Pageflip pada materi fotosintesis mata kuliah Fisiologi Tumbuhan. 3D pageflip ini merupakan software yang dapat menyajikan perangkat pembelajaran seperti: PPT, teks, gambar, foto, LKPD, lagu, animasi, dan video yang terintegrasi dalam satu paket. Media ini dirancang dengan model ADDIE yang memiliki 5 tahapan, yaitu: Analisis, Desain, Develop, Implementasi, dan Evaluasi. Media elektronik ini divalidasi oleh ahli desain media dan ahli. Data kualitatif berupa saran diperoleh dari ahli desain dan ahli materi digunakan untuk merevisi media. Setelah media dinyatakan layak maka dilanjutkan dengan uji kelompok kecil dan besar untuk melihat repons mahasiswa biologi. Validasi desain media elektrnoik berbasis 3D pageflip dilakukan sebanyak 2 kali dan diperoleh skor akhir sebesar 44 (91.67%) dengan kriteria sangat baik. Kemudian media divalidasi oleh ahli materi juga sebanyak 2 kali dan diperoleh skor akhir sebesar 36 (80%) dengan kriteria sangat baik. Hasil ujicoba kelompok kecil dengan 9 orang mahasiswa pendidikan biologi sebagai responden dan diperoleh skor sebesar 48.87 dengan kriteria sangat baik/sangat setuju. Selanjutnya hasil ujicoba kelompok besar dengan jumlah mahasiswa sebanyak 15 orang diperoleh skor sebesar 49.87 dengan kriteria juga sangat baik. Dapat disimpulkan bahwa media pembelajaran elektronik berbasis 3D pageflip pada materi fotosintesis mata kuliah Fisiologi Tumbuhan sangat layak digunakan dalam pembelajaran di kelas maupun secara individu. Kata kunci: media elektronik, 3D pageflip, fisiologi tumbuhan

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Su, Zhiyong, Ming Xia, Weiqing Li, Tao He und Weiqing Tang. „Feature-Based Simplification of Process Plant Models over Network“. International Journal of Virtual Reality 8, Nr. 2 (01.01.2009): 51–58. http://dx.doi.org/10.20870/ijvr.2009.8.2.2765.

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Visualization of 3D process plant models is an essential feature to support design review in distributed design environment. The preprocessing time, frame rate and visual fidelity play the same import role in improving the effectiveness and efficiency of the entire design review process. General model simplification algorithms, such as levels of detail (LODs) and hierarchical levels of detail (HLODs), always need unbearable time for preprocessing large-scale models and may distort design feature and make them unrecognizable to the reviewer. To efficiently transmit models, various compression technologies can be applied to shrink the data size. However, transmitting large-scale models over network is still a bottleneck of rendering performance. In this paper, we presented a new, faster feature-based model simplification algorithm to simplify process plant models over network. We first get the model's geometric parameters and topology information from the server before visualization. Then we compute LODs and HLODs according to the model�s geometric parameters and composing feature on the client. No triangles are transmitted during visualization. We demonstrate its performance on complex process plant models composed of tens of millions of triangles. Results show that our approach is able to shorten the preprocessing time greatly. And it can achieve considerable speedups in frame rate with little loss in image quality.

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Pradal, C., F. Boudon, C. Nouguier, J. Chopard und C. Godin. „PlantGL: A Python-based geometric library for 3D plant modelling at different scales“. Graphical Models 71, Nr. 1 (Januar 2009): 1–21. http://dx.doi.org/10.1016/j.gmod.2008.10.001.

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Seyfeddine, Mona, Samuel Vorlet, Nicolas Adam und Giovanni De Cesare. „Holistic Design Approach of a Throttled Surge Tank: The Case of Refurbishment of Gondo High-Head Power Plant in Switzerland“. Water 12, Nr. 12 (08.12.2020): 3440. http://dx.doi.org/10.3390/w12123440.

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In order to increase the installed capacity, the refurbishment of Gondo high-head power plant required a modification of the existing surge tank by installing a throttle at its entrance. In a previous study, the geometry of this throttle was optimized by physical modeling to achieve the target loss coefficients as identified by a transient 1D numerical analysis. This study complements previous analyses by means of 3D numerical modeling using the commercial software ANSYS-CFX 19 R1. Results show that: (i) a 3D computational fluid dynamics (CFD) model predicts sufficiently accurate local head loss coefficients that agree closely with the findings of the physical model; (ii) in contrast to a standard surge tank, the presence of an internal gallery in the surge tank proved to be of insignificant effect on a surge tank equipped with a throttle, as the variations in the section of the tank cause negligible local losses compared to the ones induced by the throttle; (iii) CFD investigations of transient flow regimes revealed that the head loss coefficient of the throttle only varies for flow ratios below 20% of the total flow in the system, without significantly affecting the conclusions of the 1D transient analysis with respect to minimum and maximum water level in the surge tank as well as pressure peaks below the surge tank. This study highlights the importance of examining the characteristics of a hydraulic system from a holistic approach involving hybrid modeling (1D, 3D numerical and physical) backed by calibration as well as validation with in-situ measurements. This results in a more rapid and economic design of throttled surge tanks that makes full use of the advantages associated with each modeling strategy.

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De Antón, J., J. Senovilla, J. M. González und F. Acebes. „Production planning in 3D printing factories“. International Journal of Production Management and Engineering 8, Nr. 2 (18.07.2020): 75. http://dx.doi.org/10.4995/ijpme.2020.12944.

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Production planning in 3D printing factories brings new challenges among which the scheduling of parts to be produced stands out. A main issue is to increase the efficiency of the plant and 3D printers productivity. Planning, scheduling, and nesting in 3D printing are recurrent problems in the search for new techniques to promote the development of this technology. In this work, we address the problem for the suppliers that have to schedule their daily production. This problem is part of the LONJA3D model, a managed 3D printing market where the parts ordered by the customers are reorganized into new batches so that suppliers can optimize their production capacity. In this paper, we propose a method derived from the design of combinatorial auctions to solve the nesting problem in 3D printing. First, we propose the use of a heuristic to create potential manufacturing batches. Then, we compute the expected return for each batch. The selected batch should generate the highest income. Several experiments have been tested to validate the process. This method is a first approach to the planning problem in 3D printing and further research is proposed to improve the procedure.

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Graziosi, Serena, Giulia Wally Scurati, Roberta Parmose, Alberto Lecchi, Monica Bordegoni und Francesco Ferrise. „BIOINSPIRED COMPUTATIONAL DESIGN: A CASE STUDY ON A 3D-PRINTED LAMP BASED ON THE PHYSALIS ALKEKENGI“. Proceedings of the Design Society 1 (27.07.2021): 561–70. http://dx.doi.org/10.1017/pds.2021.56.

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AbstractNature has always been a source of inspiration for designers and engineers, through the imitation of biological patterns and structures. This emulating and creative process is nowadays supported by technologies and tools as additive manufacturing and computational design. This paper describes the design and prototyping of a lamp inspired by a plant called Physalis Alkekengi, known as Chinese Lantern. We present the development of an algorithm, based on a computational model from literature, to realize the 2D pattern and leaves. They were then 3D printed to create the structure of the lamp and obtain an aesthetical and symbolic shading effect.

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de Souza, Luiz C. G., und Victor M. R. Arena. „Design of Satellite Attitude Control Algorithm Based on the SDRE Method Using Gas Jets and Reaction Wheels“. Journal of Engineering 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/318072.

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An experimental attitude control algorithm design using prototypes can minimize space mission costs by reducing the number of errors transmitted to the next phase of the project. The Space Mechanics and Control Division (DMC) of INPE is constructing a 3D simulator to supply the conditions for implementing and testing satellite control hardware and software. Satellite large angle maneuver makes the plant highly nonlinear and if the parameters of the system are not well determined, the plant can also present some level of uncertainty. As a result, controller designed by a linear control technique can have its performance and robustness degraded. In this paper the standard LQR linear controller and the SDRE controller associated with an SDRE filter are applied to design a controller for a nonlinear plant. The plant is similar to the DMC 3D satellite simulator where the unstructured uncertainties of the system are represented by process and measurements noise. In the sequel the State-Dependent Riccati Equation (SDRE) method is used to design and test an attitude control algorithm based on gas jets and reaction wheel torques to perform large angle maneuver in three axes. The SDRE controller design takes into account the effects of the plant nonlinearities and system noise which represents uncertainty. The SDRE controller performance and robustness are tested during the transition phase from angular velocity reductions to normal mode of operation with stringent pointing accuracy using a switching control algorithm based on minimum system energy. This work serves to validate the numerical simulator model and to verify the functionality of the control algorithm designed by the SDRE method.

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Chaidir, Diki Muhamad, und Purwati Kuswarini Suprapto. „IMPLEMENTATION OF 3D SOFTWARE TOWARDS REPRESENTATION MICROSCOPIC AND SPATIAL INTELLIGENCE OF PROSPECTIVE BIOLOGY TEACHERS“. BIOTIK: Jurnal Ilmiah Biologi Teknologi dan Kependidikan 9, Nr. 1 (30.04.2021): 15. http://dx.doi.org/10.22373/biotik.v9i1.7758.

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The aim of this research is to find out the differences in spatial intelligence and microscopic representation of prospective biology teachers in 3D software lectures on plant anatomy using Blender and 3DS Max applications. The research method used was quasi-experimental using the research design of The Matching Only Pretest-Posttest group design group. The population in this study is a prospective biology teacher in the department of biology education faculty of teaching and educational sciences in the academic year 2017/2018 at Siliwangi University who contracted the course of plant anatomy. Sampling is done by purposive sampling techniques as many as 2 classes by looking at the level of activeness in the same learning process. The results showed both classes showed a low spatial intelligence N-Gain category, as well as getting an average value of microscopic representation with a score of 3.7 for the use of 3Ds Max and 3.82 for Blender. The conclusion of this study is that there is no difference in spatial intelligence and microscopic representation of students, in addition students are still having difficulty for those who use max 3Ds software, because it requires a high enough computer specification, so the use of 3-dimensional blender application is more recommended used for aspiring biology teachers who want to make 3D forms of biological objects especially plant anatomy.

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Coe, Justin, Colin Dunbar, Keunta Epps, Joseph Hagensee und Arden L. Moore. „A low-altitude unmanned aerial vehicle (UAV) created using 3D-printed bioplastic“. Journal of Unmanned Vehicle Systems 7, Nr. 2 (01.06.2019): 118–28. http://dx.doi.org/10.1139/juvs-2017-0023.

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In this work, a four-person student team was given the challenge of designing, analysing, constructing, and testing a low-altitude unmanned aerial vehicle (UAV) prototype, which could meet or exceed a set of predefined performance requirements including range, altitude, time of flight, and load-carrying capability. In addition, the team was tasked with having their final design be composed of at least 70% sustainable material by volume. The final prototype took the form of a quadcopter with an airframe 3D printed from a plant-based bioplastic. This prototype was able to meet or exceed three of the four project performance targets, with time of flight being the lone failure. Besides serving as a proof-of-concept prototype of a functioning bioplastic-based UAV, this project is also a demonstration of 3D printing as an enabling technology that can allow even small design teams to realize complex geometries, enjoy enhanced design flexibility, and achieve high levels of UAV functionality with relatively limited resources. Finally, a discussion of important material parameters of 3D printed UAVs is presented.

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Wang, Kai Bao, Xing Fu Wang, Chao Yue, Rui Feng Wang und Zun Hong Zhao. „Structure Design and Simulation Analysis of Decladding Plant for Sunflower Seeds Based on Bionic Principle“. Applied Mechanics and Materials 602-605 (August 2014): 619–22. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.619.

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The sunflower oil that has rich nutritional value is high-quality nutrition oil. The quality of oil products was impacted seriously by a lot of harmful substances that contained in sunflower seed shell. The characteristic of sunflower seeds are the kernel is smaller and the shell density is large. The shelling operation is quite difficult with the characteristic. The shelling devices for the sunflower seeds based on optimization design method and dynamics analysis is introduced in the paper. The shelling devices for the sunflower seeds can be used in the place of processing factory and individual workshop. The structure of shelling devices was designed with the 3d modeling software. In the research, the virtual prototype technology was used to simulate the kinematics and dynamics characteristics of the mechanical system. The feasibility of the design scheme of mechanical system was proved with the simulation analysis results. The equipment has advantages of the structure is compact, safe and reliable, easy to use. The research of the shelling devices for sunflower seeds can be regarded as the reference of the related research.

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Wang, Haihang, He Xu, Yonghui Zhang, Siqing Chen, Zitong Zhao und Junlong Chen. „Design of a Bio-Inspired Anti-Erosion Structure for a Water Hydraulic Valve Core: An Experimental Study“. Biomimetics 4, Nr. 3 (06.09.2019): 63. http://dx.doi.org/10.3390/biomimetics4030063.

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Animals and plants have numerous active protections for adapting to the complex and severe living environments, providing endless inspiration for extending the service life of materials and machines. Conch, a marine animal living near the coast and chronically suffering from the erosion of sand in water, has adapted to the condition through its anti-erosion conch shell. Romanesco broccoli, a plant whose inflorescence is self-similar in character, has a natural fractal bud’s form. Coupling the convex domes on the conch shell and the fractal structure of Romanesco broccoli, a novel valve core structure of a water hydraulic valve was designed in this paper to improve the particle erosion resistance and valve core’s service life. Three models were built to compare the effect among the normal structure, bionic structure, and multi-source coupling bionic structures, and were coined using 3D printing technology. A 3D printed water hydraulic valve was manufactured to simulate the working condition of a valve core under sand erosion in water flow, and capture the experimental videos of the two-phase flow. Furthermore, based on the water hydraulic platform and one-camera-six-mirror 3D imaging subsystem, the experiment system was established and used to compare the performance of the three different valve cores. As a result, the results showed that the coupling bionic structure could effectively improve the anti-erosion property of the valve core and protect the sealing face on the valve core from wear. This paper presents a novel way of combining advantages from both animal (function bionic) and plant (shape bionic) in one component design.

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Lee, Hyunsoo, und Woo Chang Cha. „Virtual Reality-Based Ergonomic Modeling and Evaluation Framework for Nuclear Power Plant Operation and Control“. Sustainability 11, Nr. 9 (07.05.2019): 2630. http://dx.doi.org/10.3390/su11092630.

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The purpose of this study is to introduce a new and efficient virtual model-based ergonomic simulation framework utilizing recent anthropometric data for a digitalized main control room in an advanced nuclear power plant. The system interface of the main control room has been undergoing digitalization via various information and control consoles. Console operators often face human–computer interactive problems due to inappropriate console design. Computational models with a process of visual perception and variables of anthropometric data are developed for designing and evaluating operator consoles with the requirements of human factor guidelines. From the 3D computational model and simulation application, console dimensions and a designing test module, which would be used for designing suitable consoles with safety concerns in a nuclear plant, are proposed. To efficiently carry out console design and evaluation feedback, an intelligent design review system comprising a virtual modeling and simulation framework is developed. The proposed automated and virtual design review system provides console design efficiency and evaluation effectiveness. This study may influence methods of employing suitable design concepts with various anthropometric data in many areas with safety concerns and may show a feasible solution to designing and evaluating the main control room.

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Fernandez Arroiabe, Peru, Jon Iturralde Iñarga, Mercedes Gómez de Arteche Botas, Susana López Pérez, Eduardo Ubieta Astigarraga, Iñigo Unamuno, Manex Martinez-Agirre und M. Mounir Bou-Ali. „Design of a radiative heat recuperator for steel processes“. MATEC Web of Conferences 330 (2020): 01034. http://dx.doi.org/10.1051/matecconf/202033001034.

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In recent years, there has been an increasing interest in the recovery of the waste heat of steel and glass processes. This work proposes a numerical study of a waste heat exchanger system for steel production processes. The radiative energy is transferred to a commercial oil, which can be used to produce electricity. The behavior of the recuperator is analysed using a 3D numerical model, considering the constrains of a real production plant. The influence of the radiation properties of the materials on the temperature and heat transfer rate are also examined. The results show that the absorptivity of the tubes influences significantly the absorbed waste heat. Furthermore, heterogeneous mass flow distribution should be applied to optimize the total heat transfer rate.

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Zhang, Chang Liang, Ya Guo Zhang, Xiao Wei Zhang, Xiao Ning Deng und Tong Lu Li. „3D Analysis on the High Rock Slope Stability of Ningde Nuclear Power Plant, Fujian Province“. Advanced Materials Research 368-373 (Oktober 2011): 2843–47. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.2843.

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Ningde nuclear power plant in Fujian province is one of the national key construction projects of nuclear power, in order to insure the smooth progress of construction project, it needs to assess the rock slope stability which lies in the southeast of the living area. On the base of the rock architectural feature, the qualitative analysis, the three-dimensional limit equilibrium and the three-dimensional finite element are adopted to analyze the stability of the slope. The result of the qualitative analysis shows that most of the slope is stable, and part of it may fail after excavation. The result of the three-dimensional limit equilibrium and the three-dimensional finite element both illustrate that the slope is stable after excavation with slope ratio 1:0.25,1:0.50 and 1:0.75, and the stability factor rises with the decreasing of the slope ratio. At last, according to the above computing result, the 1:0.50 or the minor value is suggested to be adopted as the design slope ratio to excavate the slope.

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Tang, Yuan Qiang, und Xiang Zhong Feng. „Mathematical Modeling of Grape Organs and its’ Visual“. Advanced Engineering Forum 6-7 (September 2012): 210–14. http://dx.doi.org/10.4028/www.scientific.net/aef.6-7.210.

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Virtual plant growth is widely applied in many fields such as agriculture, forestry research, green landscape design, education, entertainment and business etc. Plant morphological structure model can simulate the real plant dynamic development, so people may be inclined to use some methods instead of the process; therefore ,multiple produce type or equation are used for modeling of natural phenomena. This paper aims to take grape organs as an example to study 3d plant organ geometric model based on OpenGL software. In this paper, grape’s organs (fruit, flower, leaf) geometric structure model and algorithm are presented.

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Marie, COUTOSTHEVENOT, und HONG Kyung-Wook. „TOE BERM DESIGN FOR RUBBLE-MOUND BREAKWATERS: EXAMPLE OF THE SAFI POWER PLANT PROJECT“. Coastal Engineering Proceedings, Nr. 35 (23.06.2017): 34. http://dx.doi.org/10.9753/icce.v35.structures.34.

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DAEWOO E&C (Engineering & Construction) is in charge constructing a new 1320 MW coal-fired power plant located approximately 15 km south-west of the city of Safi in Morocco. ARTELIA Eau & Environnement was appointed by the Contractor to perform the hydraulic design review of the rubble-mound breakwaters protecting the intake and outfall. The toe berm is a key design feature of rubble-mound breakwaters built in breaking conditions, since it helps to support the armour layer and protect the structure from potential scour-induced damage. The initial toe berm design was based on Van Der Meerâ€™s empirical formula (1998). Due to the very shallow water conditions, the toe design was verified through physical model tests (2D and 3D) in ARTELIAâ€™s hydraulics laboratory located in Pont-de-Claix, near Grenoble (France). The physical model tests demonstrated that the toe berm (6t rocks, 3:1 slope) was not stable at key singular locations, namely roundheads and roots, where direct impacts of breaking waves caused severe damage. Given the site conditions and the construction methods, the usual solutions consisting in increasing the rock size and/or placing the toe berm in a trench had to be ruled out. It was hence decided to reinforce the toe with artificial blocks and to use rectangular concrete blocks with holes. These blocks reduced the anti-stabilizing pressure difference between the top and bottom of the blocks (Tanimoto et al., 1996) and drag force due to the considerable current. They are more usually used at the toe of vertical caissons.

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Zhi, Xiao Hui, Yi Min Yin und Yan Jun Han. „The Casting Process Design and Simulation of the High-Manganese Steel Roller“. Advanced Materials Research 154-155 (Oktober 2010): 1522–25. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.1522.

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The casting process design and simulation of a high-manganese steel roller were presented in this paper. The casting process design principle, process parameters, points of attention, and the simulation parameters were introduced. Huazhu CAE was used to simulate the casting process. The STL document used in Huazhu CAE was converted from the 3D moulding of the casting process using the Solidwork software. The simulation results and practical production showed that the casting process can reduce shrinkage defects of the casting. And practical production also showed that the produced rollers, according to the technique, met the quality demands, such as no crack, no misrun, etc, and they were successfully used at the thermal power plant.

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Giovannelli, Ambra, Erika Maria Archilei und Coriolano Salvini. „Two-Stage Radial Turbine for a Small Waste Heat Recovery Organic Rankine Cycle (ORC) Plant“. Energies 13, Nr. 5 (27.02.2020): 1054. http://dx.doi.org/10.3390/en13051054.

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Looking at the waste heat potential made available by industry, it can be noted that there are many sectors where small scale (< 100 kWe) organic Rankine cycle (ORC) plants could be applied to improve the energy efficiency. Such plants are quite challenging from the techno-economic point of view: the temperature of the primary heat source poses a low cutoff to the system thermodynamic efficiency. Therefore, high-performance components are needed, but, at the same time, they have to be at low cost as possible to assure a reasonable payback time. In this paper, the design of a two-stage radial in-flow turbine for small ORC industrial plants is presented. Compared to commonly applied mono-stage expanders (both volumetric and dynamic), this novel turbine enables plants to exploit higher pressure ratios than conventional plants. Thus, the theoretical limit to the cycle efficiency is enhanced with undoubted benefits on the overall ORC plant performance. The design process involved 1D/2D models as well as 3D Computational Fluid Dynamic ones. After the design of the preliminary configuration, sensitivity analyses were carried out varying the most relevant geometric parameters for design performance improvement. Thereafter, the stages were both analyzed in off-design conditions giving their performance maps. Moreover, a stage stacking procedure was applied to obtain the overall turbine behavior.

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Luo, Tao, Huan Feng Qiu und Shao Jun Fu. „Stability Analysis of Rock and Effect Evaluation of Supporting Scheme in Tianchi Underground Plant“. Applied Mechanics and Materials 256-259 (Dezember 2012): 1329–39. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.1329.

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With the implementation of Western Development, West-to-East Electricity Transmission Project and South-to-North Water Diversion Project, a large number of hydro-power stations have been built in the west middleland regions of China. Because of the complexity of terrain, geological and physical-mechanical conditions, the stability of large underground structures becomes one of the most important problems during the engineering design, construction and operation. This paper will take Tianchi hydro-power station as an example, according to the measured stresses at several points, the in-situ stress field is feedback analyzed by using the combination of the genetic algorithm and 3D finite element method. Then, the rheological model of bolted joint rock and nonlinear finite element method are adopted to calculate the displacement field, stress field and D-P point safety factor of the underground structure. The stability of the underground structure is discussed, the excavating and supporting scheme are also presented, and the supporting effect is evaluated. The achievements in this paper can not only be taken as the reference to the design, but also provide some design experiences for other underground structures.

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Bagley, Stuart A., Jonathan A. Atkinson, Henry Hunt, Michael H. Wilson, Tony P. Pridmore und Darren M. Wells. „Low-Cost Automated Vectors and Modular Environmental Sensors for Plant Phenotyping“. Sensors 20, Nr. 11 (11.06.2020): 3319. http://dx.doi.org/10.3390/s20113319.

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High-throughput plant phenotyping in controlled environments (growth chambers and glasshouses) is often delivered via large, expensive installations, leading to limited access and the increased relevance of “affordable phenotyping” solutions. We present two robot vectors for automated plant phenotyping under controlled conditions. Using 3D-printed components and readily-available hardware and electronic components, these designs are inexpensive, flexible and easily modified to multiple tasks. We present a design for a thermal imaging robot for high-precision time-lapse imaging of canopies and a Plate Imager for high-throughput phenotyping of roots and shoots of plants grown on media plates. Phenotyping in controlled conditions requires multi-position spatial and temporal monitoring of environmental conditions. We also present a low-cost sensor platform for environmental monitoring based on inexpensive sensors, microcontrollers and internet-of-things (IoT) protocols.

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Morgese, Gaetano, Francesco Fornarelli, Paolo Oresta, Tommaso Capurso, Michele Stefanizzi, Sergio M. Camporeale und Marco Torresi. „Fast Design Procedure for Turboexpanders in Pressure Energy Recovery Applications“. Energies 13, Nr. 14 (16.07.2020): 3669. http://dx.doi.org/10.3390/en13143669.

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Sustainable development can no longer neglect the growth of those technologies that look at the recovery of any energy waste in industrial processes. For example, in almost every industrial plant it happens that pressure energy is wasted in throttling devices for pressure and flow control needs. Clearly, the recovery of this wasted energy can be considered as an opportunity to reach not only a higher plant energy efficiency, but also the reduction of the plant Operating Expenditures (OpEx). In recent years, it is getting common to replace throttling valves with turbine-based systems (tuboexpander) thus getting both the pressure control and the energy recovery, for instance, producing electricity. However, the wide range of possible operating conditions, technical requirements and design constrains determine highly customized constructions of these turboexpanders. Furthermore, manufacturers are interested in tools enabling them to rapidly get the design of their products. For these reasons, in this work we propose an optimization design procedure, which is able to rapidly come to the design of the turboexpander taking into account all the fluid dynamic and technical requirements, considering the already obtained achievements of the scientific community in terms of theory, experiments and numeric. In order to validate the proposed methodology, the case of a single stage axial impulse turbine is considered. However, the methodology extension to other turbomachines is straightforward. Specifically, the design requirements were expressed in terms of maximum allowable expansion ratio and flow coefficient, while achieving at least a minimum assigned value of the turbine loading factor. Actually, it is an iterative procedure, carried out up to convergence, made of the following steps: (i) the different loss coefficients in the turbine are set-up in order to estimate its main geometric parameters by means of a one dimensional (1D) study; (ii) the 2D blade profiles are designed by means of an optimization algorithm based on a “viscous/inviscid interaction” technique; (iii) 3D Computational Fluid Dynamic (CFD) simulations are then carried out and the loss coefficients are computed and updated. Regarding the CFD simulations, a preliminary model assessment has been performed against a reference case, chosen in the literature. The above-mentioned procedure is implemented in such a way to speed up the convergence, coupling analytical integral models of the 1D/2D approach with accurate local solutions of the finite-volume 3D approach. The method is shown to be able to achieve consistent results, allowing the determination of a turbine design respectful of the requirements more than doubling the minimum required loading factor.

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KESAVADAS, T., und M. ERNZER. „DESIGN OF AN INTERACTIVE VIRTUAL FACTORY USING CELL FORMATION METHODOLOGIES“. Journal of Advanced Manufacturing Systems 02, Nr. 02 (Dezember 2003): 229–46. http://dx.doi.org/10.1142/s0219686703000332.

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This paper describes an interactive virtual environment for modeling and designing factories and shop floors. The factory building tool is developed as an open architecture in which various modules can be utilized to quickly implement factory design algorithms ranging from plant layout to factory flow analysis. Software modules and utilities have been implemented to allow easy set-up of the visual interface. In this paper, this virtual factory is used to implement cellular manufacturing (CM) system. CM has traditionally been a very complicated system to implement in practice. However successful implementation of the system has improved productivity immersely. Several issues involved in implementing CM within our virtual factory machine modeling and interface designs for defining the cells, are discussed. The mathematical clustering algorithm called Modified Boolean Method was implemented to automatically generate complex virtual environments. The virtual factory makes the process of CM-based factory design a very easy and intuitive process. Though the cell formation problem is NP-complete in 2D space, issues related to human factors and ergonomics can be better perceived in a 3D virtual environment. It also leads to further optimization with respect to maintainability and performance, and thus help get better solutions, which are not visible unless the factory is built. Our virtual factory interface also allows easy reassignment of machines and parts, subcontracting of bottleneck parts and rearranging of machines within the same design environment, making this a productive industrial tool. 3D virtual factory can also be automatically generated from the Part Machine interface called the Virtual Matrix Interface.

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Huang, Changjin, Zilu Wang, David Quinn, Subra Suresh und K. Jimmy Hsia. „Differential growth and shape formation in plant organs“. Proceedings of the National Academy of Sciences 115, Nr. 49 (19.11.2018): 12359–64. http://dx.doi.org/10.1073/pnas.1811296115.

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Morphogenesis is a phenomenon by which a wide variety of functional organs are formed in biological systems. In plants, morphogenesis is primarily driven by differential growth of tissues. Much effort has been devoted to identifying the role of genetic and biomolecular pathways in regulating cell division and cell expansion and in influencing shape formation in plant organs. However, general principles dictating how differential growth controls the formation of complex 3D shapes in plant leaves and flower petals remain largely unknown. Through quantitative measurements on live plant organs and detailed finite-element simulations, we show how the morphology of a growing leaf is determined by both the maximum value and the spatial distribution of growth strain. With this understanding, we develop a broad scientific framework for a morphological phase diagram that is capable of rationalizing four configurations commonly found in plant organs: twisting, helical twisting, saddle bending, and edge waving. We demonstrate the robustness of these findings and analyses by recourse to synthetic reproduction of all four configurations using controlled polymerization of a hydrogel. Our study points to potential approaches to innovative geometrical design and actuation in such applications as building architecture, soft robotics and flexible electronics.

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Gołębiowski, Lesław, Marek Gołębiowski, Damian Mazur und Andrzej Smoleń. „Analysis of axial flux permanent magnet generator“. COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 38, Nr. 4 (01.07.2019): 1177–89. http://dx.doi.org/10.1108/compel-10-2018-0415.

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Purpose The purpose of this paper is to compare the methods of calculating the parameters of air-cored stator flux permanent magnet generator and to compare these results with the measurements of the designed and manufactured generator. The generator is to be designed for operation in a wind power plant. Design/methodology/approach An analytical method and 2D and 3D finite element methods (FEMs) were used to calculate the parameters of the coreless permanent magnet axial generator. The analytical method and 2D FEM were applied to individual cross-sections through the air gap of the machine. After the design and construction of the generator and measuring station, the results of calculations and measurements were compared. Findings The results of investigated calculation methods and measurements were found to be mutually compatible. Analytical methods and 2D FEM required proper interpretation of the results when comparing them with the 3D FEM. The results of the measurements and calculations showed the usefulness of the generator for operation in a wind power plant. Originality/value Full comparison of results of 2D and 3D calculations with the results of the measurements on the machine model confirmed the usefulness of fast 2D methods for the analysis of coreless generators. The results differed by the effects of leakage inductance of windings’ front connections. The application of an axial generator designed with the described methods in a wind turbine showed its proper operation.

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Wang, Wenjie, Yanpin Li, Majeed Koranteng Osman, Shouqi Yuan, Benying Zhang und Jun Liu. „Multi-Condition Optimization of Cavitation Performance on a Double-Suction Centrifugal Pump Based on ANN and NSGA-II“. Processes 8, Nr. 9 (10.09.2020): 1124. http://dx.doi.org/10.3390/pr8091124.

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Double-suction centrifugal pumps form an integral part of power plant systems in maintaining operational stability. However, there has been a common problem of achieving a better cavitation performance over a wider operating range because the traditional approach for impeller design often leads to the design effect not meeting the operational needs at off-design conditions. In addressing the problem, an optimization scheme was designed with the hub and shroud inlet angles of the double-suction impeller to minimize the suction performance at non-design flow conditions. A practical approach that speeds up the cavitation simulation process was applied to solve the experimental design, and a multi-layer feed forward artificial neural network (ANN) was combined with the non-dominated sorting genetic algorithm II to solve the multi-objective problem into three-dimensional (3D) Pareto optimal solutions that meet the optimization objective. At the design point, the suction performance was improved by 6.9%. At non-design flow conditions, the cavitation performance was improved by 3.5% at 1.2Qd overload condition, 4% at 0.8Qd, and 5% at 0.6Qd. Additionally, there was significant reduction in the attached cavity distribution in the impeller and suction domains when the optimized model was compared to the original model at off-design points. Finally, the optimization established a faster method for a three-objective optimization of cavitation performance using ANN and 3D Pareto solutions.

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Cho, Seung Ho, und Rong-Fong Fung. „Virtual design of a motor-toggle servomechanism with sliding mode-combined PID control“. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, Nr. 1 (17.04.2014): 44–53. http://dx.doi.org/10.1177/0954406214531944.

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This paper deals with the issue of virtual design of a motor-toggle servomechanism for injection-molding machines. Based on the 3D CAD of multi-body system, a five-point-type toggle mechanism has been developed with clamping force build-up. Prior to controller design, open-loop responses are obtained to derive a transfer function. In order to accommodate mismatches between the real plant and the linear model used, a discrete-time sliding function is defined and combined with PID control. The uncertainty in the mass of moving platen and the Coulomb friction at pin joints are considered for robust motion control applications. Through the use of proposed control scheme, not only significant reduction in position error at moving platen but also clamping force build-up is achieved appropriately.

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Laureau, A., E. Rosier, E. Merle, S. Beils, O. Bruneau, J. C. Blanchon, R. Gathmann et al. „THE LiCore POWER PLANT SIMULATOR OF THE MOLTEN SALT FAST REACTOR“. EPJ Web of Conferences 247 (2021): 06030. http://dx.doi.org/10.1051/epjconf/202124706030.

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Molten salt reactors as liquid-fuelled reactors are flexible in terms of operation or design choices, but they are very different in terms of design, operation and safety approach compared to solid-fuelled reactors. Such reactors call for a new definition of their operating procedures and safety approach. Dedicated developments and studies have been performed in the frame of the European SAMOFAR project of Horizon2020 and in parallel in France involving CNRS, CORYS and Framatome to develop a system code called LiCore adapted to such reactors, corresponding to a basic-principle power plant simulator. The neutronic model LiCore, at the centre of the simulator, corresponds to an improved point-kinetics model to take into account the specificities of a MSR, notably the circulation of the delayed neutron precursors out of the core. Coupled to a simple piston model for the fuel motion in the core, this code can perform calculations faster than real time to simulate the behaviour of the fuel circuit. Transient calculations performed with LiCore are presented, together with comparisons first to a simple point-kinetics model and then to 3D calculations with the TFM-OpenFOAM coupled code. Finally, the LiCore code has recently been integrated in the ALICES platform, the integrated simulation toolset designed by CORYS for the development, maintenance and operation of major simulator such as power plant simulators.

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