Готові списки джерел за темами / Validated simulation

Добірка наукової літератури з теми "Validated simulation"

Автор: Grafiati

Опубліковано: 1 червня 2024

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Статті в журналах з теми "Validated simulation":

Davis, Andrew, Aleksander Dubas, and Ruben Otin. "Enabling validated exascale nuclear science." EPJ Web of Conferences 245 (2020): 09001. http://dx.doi.org/10.1051/epjconf/202024509001.

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The field of fusion energy is about to enter the ITER era, for the first time we will have access to a device capable of producing 500 MW of fusion power, with plasmas lasting more than 300 seconds and with core temperatures in excess of 100-200 Million K. Engineering simulation for fusion, sits in an awkward position, a mixture of commercial and licensed tools are used, often with email driven transfer of data. In order to address the engineering simulation challenges of the future, the community must address simulation in a much more tightly coupled ecosystem, with a set of tools that can scale to take advantage of current petascale and upcoming exascale systems to address the design challenges of the ITER era.

Taale, Henk, and Frans Middelham. "FLEXSYT-II - A Validated Microscopic Simulation Tool." IFAC Proceedings Volumes 30, no. 8 (June 1997): 883–88. http://dx.doi.org/10.1016/s1474-6670(17)43933-4.

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Dessi-Olive, Jonathan, and Timothy Hsu. "A Simulation-Validated Shape Grammar for Architectural Acoustics." Nexus Network Journal 24, no. 1 (November 27, 2021): 55–73. http://dx.doi.org/10.1007/s00004-021-00583-8.

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Tartz, M., E. Hartmann, and H. Neumann. "Validated simulation of the ion extraction grid lifetime." Review of Scientific Instruments 79, no. 2 (2008): 02B905. http://dx.doi.org/10.1063/1.2801376.

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Bhalla, Sanjana, Neil Tolley, and Zaid Awad. "Creating a Validated Simulation Training Curriculum in Otolaryngology." Current Otorhinolaryngology Reports 8, no. 1 (February 27, 2020): 96–105. http://dx.doi.org/10.1007/s40136-020-00275-w.

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Jabbour, Noel, Troy Reihsen, Nathaniel R. Payne, Marsha Finkelstein, Robert M. Sweet, and James D. Sidman. "Validated Assessment Tools for Pediatric Airway Endoscopy Simulation." Otolaryngology–Head and Neck Surgery 147, no. 6 (September 5, 2012): 1131–35. http://dx.doi.org/10.1177/0194599812459703.

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Belka, Miloslav, Milan Maly, Ondrej Cejpek, Jakub Elcner, Frantisek Lizal, Jan Jedelsky, and Miroslav Jicha. "Validated numerical simulation of airflow in child respiratory airways." EPJ Web of Conferences 264 (2022): 01003. http://dx.doi.org/10.1051/epjconf/202226401003.

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Both pulmonary airway geometry and breathing pattern evolve from birth to adulthood. These gradual changes significantly influence airflow dynamics and subsequently particle transport and deposition. Regarding the airway structure, the differences between infants and adults are most profound till 5 years of age. Since that age the child airway geometry can be downsized from adult lungs. The objective of the present work was to investigate airflow patterns in child airways. The digital model of male respiratory airways was downsized to dimensionally correspond to a 5–year old child. Airflow simulations with properly validated RANS k–ω turbulence model were performed under steady inhalation boundary conditions. The inspiratory flow rate was 12.5 L/min. The velocity profiles just upstream of the first bifurcation were validated by Laser–Doppler anemometry (LDA) experiments. A replica of the same geometry as the one used in the simulation was 3D printed and part of the trachea was replaced by a glass tube. LDA measurements in several points upstream of the first bifurcation were carried out. The validated flow patterns were compared to the ones obtained in adult lungs.

Senfter, Thomas, Manuel Berger, Markus Schweiberer, Serafin Knitel, and Martin Pillei. "An Experimentally Validated CFD Code to Design Coandă Effect Screen Structures." Applied Sciences 13, no. 9 (May 7, 2023): 5762. http://dx.doi.org/10.3390/app13095762.

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Coandă effect screen structures are used to protect hydropower turbines in mountainous regions from impurities of different sizes. To save time during the design phase, computational fluid dynamics simulations (CFD) can support experimental investigations. Experimental investigations and 2D CFD simulations are performed on the base of the Coandă effect screen structure. Flow rates of 7 m3/h, 8 m3/h, and 9 m3/h are simulated, captured by a camera system in the experiments, and compared. In the experimental setting, the fill level of the Coandă rake is measured. For comparison, the RMSE of the y-position fill level is computed between simulation and measurement. Furthermore, the mass flow balance, Π, is evaluated. The RMSE of the y-direction fill level between simulation and measurement is on average 2.1 mm and 4.4 mm for the lower CFD level and the higher CFD level, respectively. Experiments show an average 6.72% higher Π. The reason for this is that 2D CFD does not consider the surface tension of the borders. In the diverted flow region, the flow field based on experiments appears less viscous than in the simulations. CFD simulations are an appropriate tool to support the design process of Coandă effect screens, especially for fill level determination. The validated CFD code can reduce the cost and time of experiments to design future Coandă effect screen structures.

H, Fan. "Study on Validation of the OPM Reservoir Simulator by Comparative Solution Project." Petroleum & Petrochemical Engineering Journal 4, no. 4 (2020): 1–8. http://dx.doi.org/10.23880/ppej-16000241.

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The Open Porous Media (OPM) reservoir simulation toolkit is a free and open-source development in the reservoir simulation world and one that has received very little attention. OPM Flow is a fully-implicit, black-oil simulator capable of running industry-standard simulation models, which encourage open innovation and reproducible research on modeling and simulation of porous media processes. This study validates and assesses the capabilities of OPM Flow comparing with the industry standard ECLIPSE simulator. Several tests were conducted in order to validate the simulator, including a zero- balance test, symmetrical well test, three simulation models based on the SPE Comparative Solution Project, and a real world dataset from the Norne oilfield in Norway. This variety of tests covers a wide range of reservoir types and specific operating conditions which are representative of expected applications of the software. By comparison it is concluded that OPM Flow reservoir simulator can be considered a validated and capable reservoir simulator that is able to compete with Schlumberger ECLIPSE in many cases and shows great potential for future development. In addition, a basic user interface for queuing and running simulations through the OPM Flow simulator was developed using the Python programming language as well as some modifications to the miscible flooding solver.

Adamski, Wojciech, and Przemysław Herman. "On use of equations of motion for two-rotor airship." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226, no. 8 (December 8, 2011): 2093–103. http://dx.doi.org/10.1177/0954406211429762.

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In this article, equations of motion for a two-rotor airship are derived. Moreover, the problem of engine applied forces and torques is analysed, and a trajectory generator is described and implemented into a proportional–derivative control scheme. The theoretical considerations are validated by a set of simulation tests. The simulation model takes into account the structure of the drives, namely the two engines placed symmetrically on both sides of the object. The conducted simulations validate the robustness of the controller in the case of unexpected disturbance occurrence.

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Дисертації з теми "Validated simulation":

Kambourides, Miltos E. "Nonparametic-validated computer-simulation surrogates : a Pareto formuation." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43931.

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Stainton, Andrew. "To what extent can total enterprise simulation be validated?" Thesis, University of Southampton, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438665.

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Hobson, P. A. "Thermosyphon solar water heaters : validated numerical simulation and design correlations." Thesis, Cranfield University, 1988. http://hdl.handle.net/1826/4361.

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A detailed analysis of the heat transfers and fluid flows within a direct thermosyphonic solar-energy water-heater has been undertaken. The collector energy equations when cast in a two-dimensional form enabled heat transfer and thermal capacitance effects to be simulated accurately at the small flow rates encountered commonly in such systems. An investigation of thermocline relaxation processes within the store indicated negligible mixing at the store inlet over a wide range of Richardsons numbers (43,608 < Ri < 729,016). Thermal relaxation under conditions of no flow was shown to be due predominantly to axial conduction along the store wall. The use of an appropriate non-isothermal friction factor correlation when calculating frictional losses in the collector's riser pipes, produced predicted steady-state flow rates which were corroborated experimentally to within 2%. An indoor test facility, monitored and controlled by a microcomputer, enabled "real" operating conditions to be simulated. The predicted responses of the system to identical conditions showed good agreement with the corresponding experimental observations, the predicted heat delivery being within 2.8% of the measured value. A technique for correlating the daily performances of thermosyphon solar-energy water-heaters has been developed. The five dimensionless groups which form the basis of the correlations and the functional relationships between these groups were derived from an analytical solution of a linear first-order differential transient heat balance carried out on a generic system. Thermal performance data used in the correlations was generated by the numerical simulation using representative U. K. hourly weather data and operating conditions. The minimum amount of data required to establish a characteristic curve for an individual system was found to be thirty days. Using such a curve, the total annual solar fraction agreed with that predicted by the high level model to within 3%. Two universal curves were determined in which the gradients of characteristic curves were correlated against the derived dimensionless groups. The accuracy of the resulting two-stage algorithm in determining annual solar fractions was established as ranging from 5.5% for predominantly multiple-pass systems to a mean of 10.5% for single-pass systems.

MaxeÌ, n. Fredrik. "Comparative analysis of network approaches for tactical wireless communications, validated by Joint Communication Simulation System (JCSS) simulations a Swedish perspective." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5555.

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This thesis project explores two approaches for military tactical wireless communications solutions in the context of being useful for the Swedish Armed Forces. The study's tactical perspective focuses on a force of battalion size. The two network approaches, ad hoc networking and infrastructure based, were analyzed and compared via simulation. As a baseline for this thesis project, research was initiated based on appropriate communication requirements for the tactical force. This was followed by background research into current technologies for ad hoc networking and infrastructure-based systems. In order to analyze and compare the two technology approaches, a model was developed using the software Joint Communication Simulation System (JCSS) and a battalion-sized network simulation using ad hoc and infrastructure-based technology. This thesis project addressed tactical force requirements from the perspective of the basic Swedish Armed Forces principle for command and control, which is Maneuver Warfare. Evaluation of the technologies is discussed through the important perspectives of capacity, mobility, flexibility, robustness, interoperability, and cost. By analyzing the technology approaches from these perspectives, this thesis project attempts to provide the Swedish Armed Forces with more information and understanding, which in-turn will allow better-suited future developments of all tactical wireless communication systems.

Duracz, Adam. "Rigorous Simulation : Its Theory and Applications." Doctoral thesis, Högskolan i Halmstad, Centrum för forskning om inbyggda system (CERES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-32608.

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Designing Cyber-Physical Systems is hard. Physical testing can be slow, expensive and dangerous. Furthermore computational components make testing all possible behavior unfeasible. Model-based design mitigates these issues by making it possible to iterate over a design much faster. Traditional simulation tools can produce useful results, but their results are traditionally approximations that make it impossible to distinguish a useful simulation from one dominated by numerical error. Verification tools require skills in formal specification and a priori understanding of the particular dynamical system being studied. This thesis presents rigorous simulation, an approach to simulation that uses validated numerics to produce results that quantify and bound all approximation errors accumulated during simulation. This makes it possible for the user to objectively and reliably distinguish accurate simulations from ones that do not provide enough information to be useful. Explicitly quantifying the error in the output has the side-effect of leading to a tool for dealing with inputs that come with quantified uncertainty. We formalize the approach as an operational semantics for a core subset of the domain-specific language Acumen. The operational semantics is extended to a larger subset through a translation. Preliminary results toward proving the soundness of the operational semantics with respect to a denotational semantics are presented. A modeling environment with a rigorous simulator based on the operational semantics is described. The implementation is portable, and its source code is freely available. The accuracy of the simulator on different kinds of systems is explored through a set of benchmark models that exercise different aspects of a rigorous simulator. A case study from the automotive domain is used to evaluate the applicability of the simulator and its modeling language. In the case study, the simulator is used to compute rigorous bounds on the output of a model.

Niazi, Muaz A. K. "Towards a novel unified framework for developing formal, network and validated agent-based simulation models of complex adaptive systems." Thesis, University of Stirling, 2011. http://hdl.handle.net/1893/3365.

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Literature on the modeling and simulation of complex adaptive systems (cas) has primarily advanced vertically in different scientific domains with scientists developing a variety of domain-specific approaches and applications. However, while cas researchers are inherently interested in an interdisciplinary comparison of models, to the best of our knowledge, there is currently no single unified framework for facilitating the development, comparison, communication and validation of models across different scientific domains. In this thesis, we propose first steps towards such a unified framework using a combination of agent-based and complex network-based modeling approaches and guidelines formulated in the form of a set of four levels of usage, which allow multidisciplinary researchers to adopt a suitable framework level on the basis of available data types, their research study objectives and expected outcomes, thus allowing them to better plan and conduct their respective research case studies. Firstly, the complex network modeling level of the proposed framework entails the development of appropriate complex network models for the case where interaction data of cas components is available, with the aim of detecting emergent patterns in the cas under study. The exploratory agent-based modeling level of the proposed framework allows for the development of proof-of-concept models for the cas system, primarily for purposes of exploring feasibility of further research. Descriptive agent-based modeling level of the proposed framework allows for the use of a formal step-by-step approach for developing agent-based models coupled with a quantitative complex network and pseudocode-based specification of the model, which will, in turn, facilitate interdisciplinary cas model comparison and knowledge transfer. Finally, the validated agent-based modeling level of the proposed framework is concerned with the building of in-simulation verification and validation of agent-based models using a proposed Virtual Overlay Multiagent System approach for use in a systematic team-oriented approach to developing models. The proposed framework is evaluated and validated using seven detailed case study examples selected from various scientific domains including ecology, social sciences and a range of complex adaptive communication networks. The successful case studies demonstrate the potential of the framework in appealing to multidisciplinary researchers as a methodological approach to the modeling and simulation of cas by facilitating effective communication and knowledge transfer across scientific disciplines without the requirement of extensive learning curves.

Bertin, Étienne. "Robust optimal control for the guidance of autonomous vehicles." Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAE012.

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Le guidage d'un lanceur réutilisable est un problème de contrôle qui nécessite à la fois précision et robustesse : il faut calculer une trajectoire et un contrôle, de sorte que le lanceur atteigne la piste d'atterrissage, sans s'écraser ni exploser en vol, le tout en utilisant le moins de carburant possible.Les méthodes de Contrôle Optimal issu du Principe de Pontryagin calculent une trajectoire optimale avec grande précision, mais les incertitudes, soit les erreurs entre les estimations de l'état initial et des paramètres et leurs valeurs réelles, causent une déviation potentiellement dangereuse de la trajectoire réelle. En parallèle, les méthodes ensemblistes et notamment la simulation validée peuvent encadrer toutes les trajectoires possibles d'un système dynamique avec des incertitudes bornées.Cette thèse combine ces deux approches pour encadrer des ensembles de trajectoires optimales de systèmes avec incertitudes afin de garantir la robustesse du guidage d'un véhicule autonome.Nous commençons par définir des ensembles de trajectoires optimales pour des systèmes avec incertitudes, d'abord pour les trajectoires mathématiquement parfaites, puis pour les trajectoires d'un véhicule sujet à des erreurs d'estimation, mais qui utiliserait, ou non, les données des capteurs pour recalculer sa trajectoire en cours de route. Le principe de Pontryagin caractérise ces ensembles comme solutions de problèmes aux deux bouts avec des dynamiques avec incertitudes. Nous développons alors des algorithmes qui encadrent toutes les solutions de ces problèmes aux deux bouts en utilisant la simulation validée, l'arithmétique des intervalles et la théorie des contracteurs. Cependant, la simulation avec des intervalles occasionne une forte sur-approximation qui limite nos méthodes. Pour y remédier, nous remplaçons les intervalles par des zonotopes symboliques contraints. Nous utilisons notamment ces zonotopes pour simuler des systèmes hybrides, encadrer des solutions de problèmes aux deux bouts et construire des sous-approximations en complément de la sur-approximation classique. Enfin, nous combinons tout ceci pour calculer des ensembles de trajectoires de systèmes aérospatiaux et les utilisons pour évaluer la robustesse du contrôle
The guidance of a reusable launcher is a control problem that requires both precision and robustness: one must compute a trajectory and a control such that the system reaches the landing zone, without crashing into it or exploding mid-flight, all while using as little fuel as possible. Optimal control methods based on Pontryagin's Maximum Principle can compute an optimal trajectory with great precision, but uncertainties, the discrepancies between estimated values of the initial state and parameters and actual values, cause the actual trajectory to deviate, which can be dangerous. In parallel, set-based methods and notably validated simulation can enclose all trajectories of a system with uncertainties.This thesis combines those two approaches to enclose sets of optimal trajectories of a problem with uncertainties to guarantee the robustness of the guidance of autonomous vehicles.We start by defining sets of optimal trajectories for systems with uncertainties, first for mathematically perfect trajectories, then for the trajectory of a vehicle subject to estimation errors that can use, or not use, sensor information to compute a new trajectory online. Pontryagin's principle characterizes those sets as solutions of a boundary value problem with dynamics subject to uncertainties. We develop algorithms that enclose all solutions of these boundary value problem using validated simulation, interval arithmetic and contractor theory. However, validated simulation with intervals is subject to significant over-approximation that limits our methods. To remedy that we replace intervals by constrained symbolic zonotopes. We use those zonotopes to simulate hybrid systems, enclose the solutions of boundary value problems and build an inner-approximation to complement the classical outer-approximation. Finally, we combine all our methods to compute sets of trajectories for aerospace systems and use those sets to assess the robustness of a control

Benson, Kristen D. "Use of centrifuge modelling to validate an unsaturated transport numerical simulation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2002. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ65665.pdf.

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Papapanagiotou, Nikolaos, Eugen Constantin, Sanjeev Singh, and Nikolaos Papapanagiotou. "Analysis of DDD and VDT simulation techniques to determine feasibility of using VDT simulation to validate DDD models." Monterey, California. Naval Postgraduate School, 2004. http://hdl.handle.net/10945/9925.

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MBA Professional Report
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The purpose of this MBA project was to determine whether and how VDT can emulate the results obtained from A2C2 Experiments. To do that, we have first focused on learning the basics of VDT and DDD simulation techniques and then on how the models used in DDD can be analyzed using VDT. To this end, we obtained experimental data from DDD Experiment 8 and created representative models in VDT to determine the similarities and differences. We also kept detailed records of our research to assist individuals in the future who may want to expand on our work. The project involved studying of DDD and VDT techniques, establishing building blocks in VDT, creating a best effort model for DDD Experiment 8 and studying the various outcomes. In this project we could not successfully replicate the complex DDD Experiment 8 scenarios within VDT. However, important conclusions were drawn that would go a long way towards helping future studies in this regard.

Benezech, Laurent Jean-Michel Dimotakis Paul E. "Premixed hydrocarbon stagnation flames : experiments and simulations to validate combustion chemical-kinetic models /." Diss., Pasadena, Calif. : California Institute of Technology, 2008. http://resolver.caltech.edu/CaltechETD:etd-05302008-113043.

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Книги з теми "Validated simulation":

United States. National Aeronautics and Space Administration., ed. "Shape optimization by Bayesian-validated computer-simulation surrogates": Final report, NASA grant NAG 1-1613. [Washington, DC: National Aeronautics and Space Administration, 1997.

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Wigginton, Mark, Miguel Garcia, Timothy J. Draycott, and Neil A. Muchatuta. Simulation. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198713333.003.0053.

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Simulation can be a powerful tool in obstetric anaesthesia, driving forwards the education of clinicians for the benefit of patients. Simulation has been closely linked with obstetrics since its inception. Today’s modern technology and educational theory have combined to make it a more powerful and accessible learning tool than ever, allowing both clinical skills and human factors to be effectively taught and assessed in combination. Since becoming more widely validated, simulation is also being used in research, to identify latent threats and for summative assessment. Setting up a simulation programme, whether in situ or at a dedicated centre, requires preparation, planning, and an appreciation of its limitations. The simulation should be evidence based, target the learner’s needs, and be of benefit to patients. The challenge for trainers and trainees is to ensure both that the training provided achieves these goals, and that they can deliver evidence to demonstrate that it has.

Analysis of DDD and VDT Simulation Techniques to Determine Feasibility of Using VDT Simulation to Validate DDD Models. Storming Media, 2004.

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Shaikh, Mohd Faraz. Machine Learning in Detecting Auditory Sequences in Magnetoencephalography Data : Research Project in Computational Modelling and Simulation. Technische Universität Dresden, 2021. http://dx.doi.org/10.25368/2022.411.

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Does your brain replay your recent life experiences while you are resting? An open question in neuroscience is which events does our brain replay and is there any correlation between the replay and duration of the event? In this study I tried to investigate this question by using Magnetoencephalography data from an active listening experiment. Magnetoencephalography (MEG) is a non-invasive neuroimaging technique used to study the brain activity and understand brain dynamics in perception and cognitive tasks particularly in the fields of speech and hearing. It records the magnetic field generated in our brains to detect the brain activity. I build a machine learning pipeline which uses part of the experiment data to learn the sound patterns and then predicts the presence of sound in the later part of the recordings in which the participants were made to sit idle and no sound was fed. The aim of the study of test replay of learned sound sequences in the post listening period. I have used classification scheme to identify patterns if MEG responses to different sound sequences in the post task period. The study concluded that the sound sequences can be identified and distinguished above theoretical chance level and hence proved the validity of our classifier. Further, the classifier could predict the sound sequences in the post-listening period with very high probability but in order to validate the model results on post listening period, more evidence is needed.

Частини книг з теми "Validated simulation":

De Groote, Ruben, Stefano Puliatti, Elio Mazzone, Paolo Dell’Oglio, Alexandre Mottrie, and Anthony G. Gallagher. "Validated Training Curricula in Robotic Urology." In Practical Simulation in Urology, 347–64. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-88789-6_20.

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Heeks, Jürgen, Eberhard P. Hofer, Bernd Tibken, Karin Lunde, and Klaus Thorwart. "Simulation of a Controlled Aircraft Elevator under Sensor Uncertainties." In Scientific Computing, Validated Numerics, Interval Methods, 227–37. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4757-6484-0_19.

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Chen, Mingshuai, Martin Fränzle, Yangjia Li, Peter N. Mosaad, and Naijun Zhan. "Validated Simulation-Based Verification of Delayed Differential Dynamics." In FM 2016: Formal Methods, 137–54. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48989-6_9.

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Moon, ll-Chul, and Jang Won Bae. "Comparisons of Validated Agent-Based Model and Calibrated Statistical Model." In Concepts and Methodologies for Modeling and Simulation, 243–56. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15096-3_11.

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Kurzeck, Bernhard, and Simon Fink. "Novel Automated Urban Maglev Transport System: A Validated Multibody Simulation." In Lecture Notes in Mechanical Engineering, 599–608. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38077-9_71.

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Nakayama, Shota, Mitsuki Manabe, Keigo Ushiyama, Masahiro Miyakami, Akifumi Takahashi, and Hiroyuki Kajimoto. "Pilot Study on Presenting Pulling Sensation by Electro-Tactile Stimulation." In Haptics: Science, Technology, Applications, 66–74. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06249-0_8.

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AbstractWhen an object that is grasped with a finger is pulled by an external force, the traction force is perceived by cutaneous receptors and proprioception in the finger. Several attempts have been made to simulate the pulling sensation by using wearable devices, including mechanical asymmetric vibration and tightening by belt. In this study, we developed a new method that uses electrical simulation to generate an illusory force sensation by simulating the activity pattern of the cutaneous receptors. We validated our method through two experiments, one based on force direction judgment and the other on force magnitude adjustment.

Kazmitcheff, Guillaume, Christian Duriez, Mathieu Miroir, Yann Nguyen, Olivier Sterkers, Alexis Bozorg Grayeli, and Stéphane Cotin. "Registration of a Validated Mechanical Atlas of Middle Ear for Surgical Simulation." In Medical Image Computing and Computer-Assisted Intervention – MICCAI 2013, 331–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40760-4_42.

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Bakhtiani, Tushar, Hazim El-Mounayri, and Jing Zhang. "Experimentally Validated Finite Element Simulation of Aluminum Extrusion of a Micro-Multiport Condenser." In Mechanics of Biological Systems, Materials and other topics in Experimental and Applied Mechanics, Volume 4, 81–100. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-63552-1_12.

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Ferri, G., A. Chiaracane, C. Borri, R. Höffer, F. Lupi, and U. Winkelmann. "Validated Numerical Simulation of Aerodynamic and Aeroelastic Characteristics of Rhein-Crossing Bridge in Leverkusen." In Lecture Notes in Civil Engineering, 296–309. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12815-9_24.

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Chichinina, Tatiana I., Vladimir I. Sabinin, and Rafael Avila-Carrera. "Seismic Characterization of Rock Fractures by Q-Anisotropy Analysis (QVOA) Validated by Numerical Simulation." In Springer Series in Geomechanics and Geoengineering, 637–44. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-0483-5_63.

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Тези доповідей конференцій з теми "Validated simulation":

Adileh, Almutaz, Cecilia Gonzalez-Alvarez, Juan Miguel De Haro Ruiz, and Lieven Eeckhout. "Racing to Hardware-Validated Simulation." In 2019 IEEE International Symposium on Performance Analysis of Systems and Software (ISPASS). IEEE, 2019. http://dx.doi.org/10.1109/ispass.2019.00014.

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Tartz, Michael, and Horst Neumann. "Validated Ion Thruster Grid Lifetime Simulation." In 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-5001.

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Peere, Wouter, Damien Picard, Iago Cupeiro Figueroa, Wim Boydens, and Lieve Helsen. "Validated combined first and last year borefield sizing methodology." In 2021 Building Simulation Conference. KU Leuven, 2021. http://dx.doi.org/10.26868/25222708.2021.30180.

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Barocio, E., A. Franc, V. Kapre, P. Pibulchinda, and A. Thomas. "Validated Simulation for Large Scale Additive Manufacturing." In CAMX 2022. NA SAMPE, 2022. http://dx.doi.org/10.33599/nasampe/c.22.0064.

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Hovsepian, Karen, Peter Anselmo, and Subhasish Mazumdar. "A modeling-based classification algorithm validated with simulated data." In 2008 Winter Simulation Conference (WSC). IEEE, 2008. http://dx.doi.org/10.1109/wsc.2008.4736139.

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Unger, Andreas, Reinhard Schemmel, Tobias Meyer, Florian Eacock, Paul Eichwald, Simon Althoff, Walter Sextro, Michael Brokelmann, Matthias Hunstig, and Karsten Guth. "Validated simulation of the ultrasonic wire bonding process." In 2016 IEEE CPMT Symposium Japan (ICSJ). IEEE, 2016. http://dx.doi.org/10.1109/icsj.2016.7801275.

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dit Sandretto, Julien Alexandre. "Reliable NonLinear Model-Predictive Control via Validated Simulation." In 2018 Annual American Control Conference (ACC). IEEE, 2018. http://dx.doi.org/10.23919/acc.2018.8431304.

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Cioban, R., Sz Szoke, Z. Koradi, D. Zaharie-B., and C. Leordean. "Validated Model Calibration for Simulation Aided Thermal Design." In 2020 36th Semiconductor Thermal Measurement, Modeling & Management Symposium (SEMI-THERM). IEEE, 2020. http://dx.doi.org/10.23919/semi-therm50369.2020.9142853.

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Sarkar, SuSanta P., James G. Casazza, and John Dale. "Validated Specification through Simulation for Complex Electronic Modules." In SAE 2006 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2006. http://dx.doi.org/10.4271/2006-01-0171.

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Yang, H. X., R. H. Marshall, and B. J. Brinkworth. "Validated simulation for thermal regulation of photovoltaic wall structures." In Conference Record of the Twenty Fifth IEEE Photovoltaic Specialists Conference - 1996. IEEE, 1996. http://dx.doi.org/10.1109/pvsc.1996.564409.

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Звіти організацій з теми "Validated simulation":

Geller, Drew, Johanna Mathieu, Sebastian Nugroho, Ioannis Granitsas, and Phillippe Phanivong. Evidence of Completion of Milestone 4: Simulation Testbed Validated with Experimental Data. Office of Scientific and Technical Information (OSTI), December 2021. http://dx.doi.org/10.2172/1836964.

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Witzig, Andreas, Camilo Tello, Franziska Schranz, Johannes Bruderer, and Matthias Haase. Quantifying energy-saving measures in office buildings by simulation in 2D cross sections. Department of the Built Environment, 2023. http://dx.doi.org/10.54337/aau541623658.

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Анотація:

A methodology is presented to analyse the thermal behaviour of buildings with the goal to quantify energy saving measures. The solid structure of the building is modelled with finite elements to fully account for its ability to store energy and to accurately predict heat loss through thermal bridges. Air flow in the rooms is approximated by a lumped element model with three dynamical nodes per room. The dynamic model also contains the control algorithm for the HVAC system and predicts the net primary energy consumption for heating and cooling of the building for any time period. The new simulation scheme has the advantage to avoid U-values and thermal bridge coefficients and instead use well-known physical material parameters. It has the potential to use 2D and 3D geometries with appropriate automatic processing from BIM models. Simulations are validated by comparison to IDA ICE and temperature measurement. This work aims to discuss novel approaches to disseminating building simulation more widely.

Schmelzer, Stefan, and Michael Miess. Combined Report on Work Package 6. Deliverable 6.1: Report on the Calibrated and Validated CGE Model with Implemented Scenarios Ready for Use. Deliverable 6.2: A Set of Simulation Results and Case StudiesDevelopment of an Evaluation Framework for the Introduction of Electromobility. Project: DEFINE - Development of an Evaluation Framework for the INtroduction of Electromobility. IHS - Institute for Advanced Studies, February 2015. http://dx.doi.org/10.22163/fteval.2015.501.

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Combined Report on Work Package 6. Deliverable 6.1: Report on the Calibrated and Validated CGE Model with Implemented Scenarios Ready for Use. Deliverable 6.2: A Set of Simulation Results and Case StudiesDevelopment of an Evaluation Framework for the Introduction of Electromobility. Project: DEFINE - Development of an Evaluation Framework for the INtroduction of Electromobility

Jones, Thomas, Richard Strachan, David Mackie, Mervyn Cooper, Brian Frame, and Jan Vorstius. Phase Field & Monte Carlo Potts Simulation of Grain Growth and Morphology of Vertically Upwards Cast Oxygen Free Copper. University of Dundee, October 2021. http://dx.doi.org/10.20933/100001287.

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A 2-D Phase-Field coupled Monte Carlo-Potts model, using PhasePot of vertically upwards continuous casting (VUCC) of oxygen free copper (OFCu) was investigated to reveal the grain growth morphology and the withdrawal parameters required to produce a high-quality homogeneity within the grain structure. A dynamic moving reference frame was used as an approximation to the complex withdrawal parameters. The simulation results were validated alongside cast rod grain structures produced under the same cast parameters, at Rautomead Ltd on a RS080 VUCC machine.

Ding, Yan, Sung-Chan Kim, Rusty L. Permenter, Richard B. Styles, and Jeffery A. Gebert. Simulations of Shoreline Changes along the Delaware Coast. Engineer Research and Development Center (U.S.), January 2021. http://dx.doi.org/10.21079/11681/39559.

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This technical report presents two applications of the GenCade model to simulate long-term shoreline evolution along the Delaware Coast driven by waves, inlet sediment transport, and longshore sediment transport. The simulations also include coastal protection practices such as periodic beach fills, post-storm nourishment, and sand bypassing. Two site-specific GenCade models were developed: one is for the coasts adjacent to the Indian River Inlet (IRI) and another is for Fenwick Island. In the first model, the sediment exchanges among the shoals and bars of the inlet were simulated by the Inlet Reservoir Model (IRM) in the GenCade. An inlet sediment transfer factor (γ) was derived from the IRM to quantify the capability of inlet sediment bypassing, measured by a rate of longshore sediments transferred across an inlet from the updrift side to the downdrift side. The second model for the Fenwick Island coast was validated by simulating an 11-y ear-long shoreline evolution driven by longshore sediment transport and periodic beach fills. Validation of the two models was achieved through evaluating statistical errors of simulations. The effects of the sand bypassing operation across the IRI and the beach fills in Fenwick Island were examined by comparing simulation results with and without those protection practices. Results of the study will benefit planning and management of coastal sediments at the sites.

McAlpin, Jennifer, and Jason Lavecchia. Brunswick Harbor numerical model. Engineer Research and Development Center (U.S.), May 2021. http://dx.doi.org/10.21079/11681/40599.

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The Brunswick area consists of many acres of estuarine and marsh environments. The US Army Corps of Engineers District, Savannah, requested that the US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, develop a validated Adaptive Hydraulics model and assist in using it to perform hydrodynamic modeling of proposed navigation channel modifications. The modeling results are necessary to provide data for ship simulation. The model setup and validation are presented here.

Linker, Taylor, and Timothy Jacobs. PR-457-18204-R01 Variable Fuel Effects on Legacy Compressor Engines Phase IV - Predictive NOx Modeling. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), May 2019. http://dx.doi.org/10.55274/r0011584.

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The ultimate goal of this work is to improve the current control methods for large bore, lean burn natural gas engines in order to combat performance and emissions issues during variable fuel composition events. This will be achieved in the long term by simulating the effects of variable fuel composition on a large bore, natural gas engine and developing engine control strategies which work to mitigate adverse effects. The work of Phase IV adds onto previous work by enabling the prediction of NOxemissions in the validated, full-scale engine simulation of a Cooper-Bessemer GMWH-10C developed in Phase III. A sweep of fuel composition was also performed to assess the effect that variable fuel composition has on in-cylinder properties and NOxemissions. Engine-out NOxwas predicted via a chemical kinetic mechanism which was implemented into the existing engine simulation. The mechanism dictates the composition of combustion products in each cylinder, including NO and NO2(NOx). NOxlevels were measured at the simulation exhaust to compare with the experimental NOxdata acquired as part of the data collection carried out in Phase III of this project. The prediction was tuned in order to achieve the closest prediction to real measured NOxvalues. A preliminary sweep of fuel composition was completed by varying the mole fractions of ethane and propane within the natural gas compositions used in the simulation. Changes in in-cylinder pressure, location of peak pressure, in-cylinder temperature, and engine-out NOxwere evaluated based on their trend-wise behavior and compared qualitatively to expected results.

Whisler, Daniel, Rafael Gomez Consarnau, and Ryan Coy. Novel Eco-Friendly, Recycled Composites for Improved CA Road Surfaces. Mineta Transportation Institute, July 2021. http://dx.doi.org/10.31979/mti.2021.2046.

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The continued use of structural plastics in consumer products, industry, and transportation represents a potential source for durable, long lasting, and recyclable roadways. Costs to dispose of reinforced plastics can be similar to procuring new asphalt with mechanical performance exceeding that of the traditional road surface. This project examines improved material development times by leveraging advanced computational material models based on validated experimental data. By testing traditional asphalt and select carbon and glass reinforced composites, both new and recycled, it is possible to develop a finite element simulation that can predict the material characteristics under a number of loads virtually, and with less lead time compared to experimental testing. From the tested specimens, composites show minimal strength degradation when recycled and used within the asphalt design envelopes considered, with an average of 49% less wear, two orders of magnitude higher compressive strength, and three orders for tensile strength. Predictive computational analysis using the validated material models developed for this investigation confirms the long-term durability.

Tosi, R., R. Codina, J. Principe, R. Rossi, and C. Soriano. D3.3 Report of ensemble based parallelism for turbulent flows and release of solvers. Scipedia, 2022. http://dx.doi.org/10.23967/exaqute.2022.3.06.

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In this work we focus on reducing the wall clock time required to compute statistical estimators of highly chaotic incompressible flows on high performance computing systems. Our approach consists of replacing a single long-term simulation by an ensemble of multiple independent realizations, which are run in parallel with different initial conditions. A failure probability convergence criteria must be satisfied by the statistical estimator of interest to assess convergence. Its error analysis leads to the identification of two error contributions: the initialization bias and the statistical error. We propose an approach to systematically detect the burn-in time in order to minimize the initialization bias, accompanied by strategies to reduce simulation cost. The framework is validated on two very high Reynolds number obstacle problems of wind engineering interest in a high performance computing environment.

Fieseler, Kelsey, and Timothy Jacobs. PR-457-14201-R04 Variable NG Composition Effects on LB 2SC Integral Engines. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), September 2018. http://dx.doi.org/10.55274/r0011525.

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The overall goal of this project is to improve upon existing engine control strategies of large bore, fuel-lean natural gas engines in order to increase efficiency and maintain emissions compliance during variable fuel composition events. This will be done by simulating the effects of variable fuels in a natural gas engine, and if necessary, develop engine control methods. Phase III builds upon the work of previous phases by implementing detailed cylinder-level geometry, increasing the number of alkane species in the laminar flame speed and ignition delay solutions, and incorporating a prechamber model into the full-scale engine simulation of a Cooper-Bessemer GMWH-10C. The piston motion and port profiles were calculated from known engine geometry as a way to simulate cylinder compression and expansion as well as cylinder scavenging. The species considered were increased from binary mixtures of methane and ethane to quinary mixtures of methane, ethane, propane, butane, and pentane in order to capture the effects of heavier hydrocarbons. The laminar flame speed and ignition delay equations were developed using the same method utilized in the previous phase, but the laminar flame speed was implemented differently. Two predictive combustion simulations were developed in GT-Power. The first simplifies the combustion chambers into just one open chamber. The second includes the actual cylinder volumes: two small prechambers attached to the main chambers. Both of these models were tuned and validated against experimental data.