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Journal articles on the topic 'Thermal field simulation'

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Author: Grafiati

Published: 30 May 2022

Last updated: 31 May 2022

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1

Sýkorová, Libuše, Oldřich Šuba, and Jana Knedlova. "Laser Micro-Machining and Temperature Field Simulation." Key Engineering Materials 581 (October 2013): 322–25. http://dx.doi.org/10.4028/www.scientific.net/kem.581.322.

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The parametric thermal field analyses were realized by the finite element method. The analysis was run in the software solver COSMOS/DesignSTAR thermal. The thermal module makes possible to realize cases of the thermal dependences on the material properties. Material data can be entered as a function of the temperature. The thermal and physical characteristic of the polymeric materials are changed very expressively. The output of the analysis was temperature distribution described by various colors and assigned values in the spectrogram.

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2

Rahadian, Erwin Yuniar, and Agung Prabowo Sulistiawan. "The Evaluation of Thermal Comfort using a BIM-based Thermal Bridge Simulation." Journal of Architectural Research and Education 1, no. 2 (January 1, 2020): 129. http://dx.doi.org/10.17509/jare.v1i2.22304.

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Global warming has become an important issue today, caused by the increasing demand for energy and humans lifestyle. To reduce the impact, more architects started to respond regarding environmental issues. The concept of green architecture promotes to solving this problem. Natural ventilation is the one of the concept green architecture. This research tends to look at the aspect of Thermal Comfort in naturally ventilated mosque buildings through the Thermal Bridges strategy. Naturally ventilated building tend to have better indoor air quality (IAQ), but worse thermal comfort. Therefore, this research investigates the range of acceptable temperature and calculate by BIM thermal bridge simulation to achieve thermal comfort for naturally ventilated mosque building. The method of analysis conducted is quantitative based on direct measurement of weather data and existing comfort conditions in the field, calculations, and simulations using Building Information Modeling (BIM). Data was collected through a field survey in Itenas Mosque Building and were used to develop and validate then using the BIM thermal bridge model for simulation. The data collected from field survey and in situ environmental measurement such as air temperature, relative humidity, and wind velocity. The thermal comfort prediction model was developed from statistical analysis of the field survey data. Based on the result of thermal Bridge simulation using BIM software required exchange material of the existing building to achieve thermal comfort. Keyword-Thermal comfort, Building Information Modelling, Thermal Bridge Simulation

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3

Chen, Xue Jun, and Qi Liu. "Simulation of Temperature Field and Thermal Stress Field during Laser Drilling." Applied Mechanics and Materials 217-219 (November 2012): 2226–29. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.2226.

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In this paper, the finite element simulation of laser drilling process has been carried out for the nickel alloy DD6. Both the transient temperature field and thermal stress field were computed via the commercial software package ANSYS. Based on the method of dimensional analysis, the dependence of various non-dimensional parameters on both fields was specified and demonstrated in graphical forms.

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4

Wajnert, Dawid, and Bronisław Tomczuk. "Analysis of spatial thermal field in a magnetic bearing." Open Physics 16, no. 1 (March 20, 2018): 52–56. http://dx.doi.org/10.1515/phys-2018-0010.

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AbstractThis paper presents two mathematical models for temperature field analysis in a new hybrid magnetic bearing. Temperature distributions have been calculated using a three dimensional simulation and a two dimensional one. A physical model for temperature testing in the magnetic bearing has been developed. Some results obtained from computer simulations were compared with measurements.

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5

Lu, De Sheng, Yu Zhou, Bei Wang, Yu Jin Wang, Jia Hu Ouyang, and Hua Ke. "Numerical Simulation of Thermal Stress Field of Arc-Shaped Thermal-Protection Component." Key Engineering Materials 353-358 (September 2007): 1110–13. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1110.

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For the purpose of studying material cluster design and shape design of a certain arc-shaped thermal-protection component rationally, the ablation behavior and thermal stress distribution are studied by using the method of finite element numerical simulation. The study includes ablation tests, numerical simulation of temperature field, calculation of ablation thickness and numerical simulation of unsteady thermal stress field of the component. The simulation results are consistent with the results of ablation tests, which shows that the shape design of the arc-shaped thermal-protection component is rational and the dangerous periods of the component ablation are the time of initial heating and initial ablation boundary retreat.

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6

Camus, P. P., D. J. Larson, and T. F. Kelly. "Simulation of rapid thermal pulsing for field evaporation." Applied Surface Science 67, no. 1-4 (April 1993): 467–72. http://dx.doi.org/10.1016/0169-4332(93)90354-e.

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7

Codrean, C., B. Radu, D. Buzdugan, and C. Opriş. "Simulation of Thermal Field in Bulk Amorphous Steels." IOP Conference Series: Materials Science and Engineering 416 (October 26, 2018): 012021. http://dx.doi.org/10.1088/1757-899x/416/1/012021.

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8

Dai, Huaren, Zhe Chen, Wei Guo, and Ju Wang. "Thermal simulation model of aero-engine blade material forging simulation." Thermal Science 25, no. 4 Part B (2021): 3169–77. http://dx.doi.org/10.2298/tsci2104169d.

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During the high temperature forging process, the thermal parameters such as the temperature field and strain field in the blank have an important influence on the crack damage and micro-structure in the forging. We use the rigid viscoelastic finite element method to carry out the forging process of a heavy aero-engine blade the finite element numerical simulation was carried out to obtain the temperature field, strain field and forging load change law in the forging process with time, and on this basis, combined with the crack damage and repair mechanism and the re?crystallization structure evolution law, an optimization was proposed. The forging process plan. That is, the pre-forging is performed on the basis of the tolerance of the final forging dimension under pressure of 4 mm, the pre-forging temperature is 1160?C, and the final forging temperature is 1120?C. The actual forging process test verifies the feasibility of the process plan, which is the engineering of this process the application lays the scientific foundation.

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9

Li, Yan Feng, Jian Song, Shao Hui Liu, and Xian Chun Song. "Temperature Field Simulation of Ballscrew Whirlwind Milling." Advanced Materials Research 591-593 (November 2012): 588–92. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.588.

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Ball screw is the key parts of NC machine, precise instrument and many kinds of mechanical devices. Whirlwind milling is a new and effective thread manufacture technology. This article studies the internal heat conduction equation of whirlwind milling ball screw based on Heat Transfer, calculates ANSYS simulation result. The simulation results show that the surface temperature distribution rule and internal temperature distribution rule of a ballscrew is consistent. The article analyzes the influence factors of the thermal elongation. It provides a basis for compensating the thermal deformation error of whirlwind milling ballscrew.

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10

Drahoš, Peter, Vladimír Kutiš, and Róbert Lenický. "Thermocouple Sensor Influence on Temperature Field in SMA Actuator." Applied Mechanics and Materials 394 (September 2013): 50–56. http://dx.doi.org/10.4028/www.scientific.net/amm.394.50.

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The paper deals with thermal analysis, modeling and simulation of the Shape Memory Alloy (SMA) actuator with temperature sensor. Because the capabilities of analytical description of SMA system are limited, numerical simulations of model have to be performed. Two different numerical models are investigated - lumped and continuous model. Simple parametric lumped model of actuator thermal field is developed in order to describe thermal field at the measuring point. The characteristic parameters of the lumped model are set up according to continuous coupled electric-thermal model made in ANSYS FEM program.

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11

Klinger, Carolin, Bernhard Mayer, Fabian Jakub, Tobias Zinner, Seung-Bu Park, and Pierre Gentine. "Effects of 3-D thermal radiation on the development of a shallow cumulus cloud field." Atmospheric Chemistry and Physics 17, no. 8 (April 28, 2017): 5477–500. http://dx.doi.org/10.5194/acp-17-5477-2017.

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Abstract. We investigate the effects of thermal radiation on cloud development in large-eddy simulations (LESs) with the UCLA-LES model. We investigate single convective clouds (driven by a warm bubble) at 50 m horizontal resolution and a large cumulus cloud field at 50 and 100 m horizontal resolutions. We compare the newly developed 3-D Neighboring Column Approximation with the independent column approximation and a simulation without radiation and their respective impact on clouds. Thermal radiation causes strong local cooling at cloud tops accompanied by a modest warming at the cloud bottom and, in the case of the 3-D scheme, also cloud side cooling. 3-D thermal radiation causes systematically larger cooling when averaged over the model domain. In order to investigate the effects of local cooling on the clouds and to separate these local effects from a systematically larger cooling effect in the modeling domain, we apply the radiative transfer solutions in different ways. The direct effect of heating and cooling at the clouds is applied (local thermal radiation) in a first simulation. Furthermore, a horizontal average of the 1-D and 3-D radiation in each layer is used to study the effect of local cloud radiation as opposed to the domain-averaged effect. These averaged radiation simulations exhibit a cooling profile with stronger cooling in the cloudy layers. In a final setup, we replace the radiation simulation by a uniform cooling of 2.6 K day−1. To focus on the radiation effects themselves and to avoid possible feedbacks, we fixed surface fluxes of latent and sensible heat and omitted the formation of rain in our simulations. Local thermal radiation changes cloud circulation in the single cloud simulations, as well as in the shallow cumulus cloud field, by causing stronger updrafts and stronger subsiding shells. In our cumulus cloud field simulation, we find that local radiation enhances the circulation compared to the averaged radiation applications. In addition, we find that thermal radiation triggers the organization of clouds in two different ways. First, local interactive radiation leads to the formation of cell structures; later on, larger clouds develop. Comparing the effects of 3-D and 1-D thermal radiation, we find that organization effects of 3-D local thermal radiation are usually stronger than the 1-D counterpart. Horizontally averaged radiation causes more clouds and deeper clouds than a no radiation simulation but, in general less-organized clouds than in the local radiation simulations. Applying a constant cooling to the simulations leads to a similar development of the cloud field as in the case of averaged radiation, but less water condenses overall in the simulation. Generally, clouds contain more liquid water if radiation is accounted for. Furthermore, thermal radiation enhances turbulence and mixing as well as the size and lifetime of clouds. Local thermal radiation produces larger clouds with longer lifetimes. The cloud fields in the 100 and 50 m resolution simulations develop similarly; however, 3-D local effects are stronger in the 100 m simulations which might indicate a limit of our 3-D radiation parameterization.

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12

Li, Xiao Yong, and Zhi Gang Zhang. "Study on Thermal Field of Mass Concrete by Experiment and Numerical Simulation." Advanced Materials Research 168-170 (December 2010): 1117–21. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.1117.

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An experimental study is conducted to simulate the thermal field in mass concrete. Accurate prediction of the thermal stress by analysis is quite difficult particularly at early ages, due to uncertain age-dependent properties of concrete. A series of tests was conducted in which the temperature was measured for a large number of observation points. The effect of aging and the amount of measuring points on thermal field development that can occur in realistic structures was evaluated. Numerical simulations of the thermal field setup were also performed using the finite element with ANSYS software to verify and extend the experimental interpretation and to determine the maximum temperature value which would occur under construction process. Mass concrete temperature field and stress field for specific projects were measured and analyzed. Numerical simulation of mass concrete temperature field for the actual project is compared with the measured results. The results show that the temperature field of numerical simulation results and measured curves result are of the same trend. And it is feasible that mass concrete temperature field is simulated based on ANSYS.

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13

曾, 流芳. "Numerical Simulation of Thermal-Hydro-Mechanical Coupling in Thermal Production Oil Field." Advances in Porous Flow 01, no. 02 (2011): 9–16. http://dx.doi.org/10.12677/apf.2011.12002.

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14

Cai, De Hong, Cheng Qin Ren, and Jing Ping Liu. "The Coupled Simulation Research on Engine Cooling System." Advanced Materials Research 516-517 (May 2012): 457–62. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.457.

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Abstract: With the help of field experiments, a 1-D/3-D coupled simulation model between automo-tive engine cooling systems and engine cabin is established. Through these experiments and coupled simulations, the influence of engine cabin on the performance of engine cooling system and thermal flow field has been analyzed, and convective heat transfer coefficients on the engine surface which contacted with engine cabin’s thermal flow field have been summarized. These heat transfer coeffi-cients provide basic arguments for developing engine cooling system efficiently.

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15

Hu, Dachao, Lei Zheng, and Lihua Zheng. "Crystallizer's Heat-Transferring Theory Analysis and Thermal Field Simulation." Journal of Computational and Theoretical Nanoscience 9, no. 9 (September 1, 2012): 1279–83. http://dx.doi.org/10.1166/jctn.2012.2186.

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16

Hong, K. C., and G. W. Cook. "Successful Deployment of Thermal Simulation Technology to Field Office." SPE Computer Applications 8, no. 01 (January 1, 1996): 15–19. http://dx.doi.org/10.2118/29643-pa.

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17

Ding, Li, Lamei Che, Yumin Zhang, Hailin Cao, Xiaohong Hao, and Weihua Xie. "The transient temperature field simulation of the micro-grid inverter." Thermal Science 22, Suppl. 2 (2018): 391–99. http://dx.doi.org/10.2298/tsci170930251d.

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For the power electronics devices with the insulated gate bipolar transistors, the thermal management is very important and necessary for the devices reliability. In this paper, power losses of the inverter were evaluated based on its electro-thermal model and control logic. Accordingly, its thermal management system using forced air cooling is designed and simulated. The transient temperature filed simulation results showed that the thermal management system is feasible and can guarantee the working temperature of the inverter. Experimental results were also obtained to verify the simulation results in this paper.

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18

Li, Jiang, Nan Li, Feng Jun Chen, Yuan Bing Li, and Jian Qiang Qi. "Numerical Simulation of Temperature Field in Desulphurizing Lance." Key Engineering Materials 280-283 (February 2007): 1833–36. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.1833.

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The paper shows a finite element method (FEM) model to calculate the temperature distribution of desulphurizing lance use in hot metal pretreatment by ANSYS program. The dynamic temperature distribution under non-linear thermal loads within lance in one or more duty cycles is obtained. The temperature distribution at important parts of the lance changes with time and is summed up according to the simulation. Some important instructional opinions offered by the conclusion benefit the improvement of temperature-based structure design and mend of desulphurizing lance. In addition, the conclusion provides research data for thermal stress analysis of lance.

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19

Vyroubal, Petr, Tomas Kazda, and Martin Mačák. "The Numerical Simulation of Thermal Abuse and Runaway in Lithium Ion Battery Pack." ECS Transactions 105, no. 1 (November 30, 2021): 549–59. http://dx.doi.org/10.1149/10501.0549ecst.

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Computer simulations today play an important role in the field of science and technology. The same is true in the field of electrochemistry, where they are used mainly to model the charging and discharging processes in various types of batteries, at the various loads and temperature processes associated with it. This article deals with the possibility of modeling thermal abuse, which subsequently leads to the thermal runaway effect in a lithium ion battery pack. The simulation is accompanied by experimental measurements and comparison of the original results from the real test and simulation.

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20

Xu, J. G., B. W. Luo, and HuiQiang Li. "NUMERICAL SIMULATION OF TEMPERATURE FIELD AND THERMAL STRESS FIELD IN MoSi2 MULTI-LAYER COATING UNDER THERMAL LOADING." Composites: Mechanics, Computations, Applications, An International Journal 2, no. 2 (2011): 83–94. http://dx.doi.org/10.1615/compmechcomputapplintj.v2.i2.10.

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21

Montoya, Maxime, Madalina Calamaz, Daniel Gehin, and Franck Girot. "Numerical Simulation of Workpiece Thermal Field in Drilling CFRP/Aluminum Alloy." Key Engineering Materials 611-612 (May 2014): 1226–35. http://dx.doi.org/10.4028/www.scientific.net/kem.611-612.1226.

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Machining is a process implying extremely high coupled thermo-mechanical stresses. The workpiece mechanical properties decrease with the temperature generated during the process and that temperature has a direct influence on wear intensity undergone by the tool. In the case of a drilling operation, the temperature generated by the cutting process can lead to metal burr formation and/or composite matrix degradation by burning. When these two materials are used in the form of a sandwich-type stacking, the temperature attained in the metallic part can cause new defects such as: i) a difference between the diameters measured in each material and ii) organic matrix damages due to heat diffusion from the metal towards the CFRP layer. Temperature reached at the tool/workpiece interface is difficult to measure during drilling operation, due to its enclosed configuration; numerical simulation is therefore a good alternative to access to this information. The purpose of this study is to develop and carry out numerical simulations in order to estimate the workpiece thermal field generated during drilling. The simulations are validated by comparing simulated and measured temperatures at 4 mm from the holes wall. This method is applied to evaluate thermal field generated during drilling (with chip removing cycles) of CFRP/Aluminum alloy stacks. The influence of the drilling kinematics on the workpiece thermal field is also investigated.

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22

Zhang, Ying, Qiang Ma, Jin Hua Xu, Shui Sheng Xie, Mao Peng Geng, Hong Min Guo, and Hai Bo Zhao. "Numerical Analysis on Thermal Field in Rheocasting-Rolling of Semi-Solid Magnesium." Materials Science Forum 675-677 (February 2011): 957–60. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.957.

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The process on rheocasting-rolling of semi-solid AZ91D magnesium alloy was investigated by the finite element method from the aspect of fluid mechanics .The mathematical model of the casting-rolling zone was built based on the analysis on the heat transfer mode and boundary conditions of the casting-rolling zone. The numerical simulations were carried out by different casting-rolling parameters to observe the full solidification point and find the best pouring temperature. The numerical simulation results showed that when the semi-solid slurry temperature was 584°C, magnesium strips with good structure and performance could be obtained by rheocasting-rolling. This simulation provided a valid evidence to determine the optimal process parameters.

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23

Aricioglu, Burak, and Abdullah Ferikoglu. "Thermal Effects of 5G Frequency EM Waves on Ocular Tissue." Applied Computational Electromagnetics Society 36, no. 4 (May 10, 2021): 386–97. http://dx.doi.org/10.47037/2020.aces.j.360404.

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This research article aims to investigate the thermal effects on human eye due to exposure of EM (electromagnetic) field at 5G frequencies. A secondary purpose of the article is to show that SPICE, one of the most commonly used tools in circuit analysis, can be used to solve complex EM and bioheat transfer problems. Both electric field and temperature distributions in human eye are simulated with transmission line modelling (TLM) method. Also, finite element method (FEM) calculations are carried out for comparison. Temperature distributions are calculated for 30 minutes of EM radiation exposure. As a subject of the simulation, a human is chosen that the power density of incoming field at the human eye is assumed as the maximum of the ICNIRP general public exposure limits. A good consistency between TLM and FEM based simulations is found. A new transmission line model based on Debye parametric model is generated for simulation of EM field distribution in the tissues. With this generated transmission line, the results for the frequencies of interest can be obtained via single simulation. Also, a new transmission line model is developed for the temperature distribution simulation in which the effects of noncompressible fluid flow such as non-unidirectional blood flow in tissues and flow in aqueous humor are taken into consideration.

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24

Che, Qiang. "Numerical Simulation of Thermal Environment in High Heat Tunnel." Advanced Materials Research 516-517 (May 2012): 519–23. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.519.

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With the increasing depth of coal mining, problems of high temperature thermal damage in mine become more and more serious. A high heat tunnel thermal environment case is numerical simulated in the presented work, PMV (Predicted Mean Vote) indices are using to predict the thermal comfort of environment, velocity field, temperature field and PMV values field in high heat tunnel had been obtained. The simulation results indicated while the inlet air velocity is 0.7 m/s, the temperatures in most tunnel area are below 26 °C and the thermal environment conforms to the Coal Mine Safety Regulation in China.

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Zhu, Hai Long, Shi Yun Li, and Chun Rong Wang. "Numerical Simulation of Temperature Field of Gears in Quenching Process." Applied Mechanics and Materials 457-458 (October 2013): 566–70. http://dx.doi.org/10.4028/www.scientific.net/amm.457-458.566.

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Combining with change of the thermal physical parameters of materials, the temperature field of 45 steel gears in quenching processes has been numerically simulated using the thermal analysis module of ANSY Workbench software. The relationship between temperature of gears parts and quenching time has been achieved, the simulation results are consistent with actual process. The methods is superior to the traditional manual measuring and experience judgment way. The simulation process has provided the due theoretical basis for the calculation of parts thermal stress and residual stress in quenching process.

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26

Tukmakova, Anastasiia, Anna Novotelnova, Kseniia Samusevich, Andrey Usenko, Dmitriy Moskovskikh, Alexandr Smirnov, Ekaterina Mirofyanchenko, Toshiyuki Takagi, Hiroyuki Miki, and Vladimir Khovaylo. "Simulation of Field Assisted Sintering of Silicon Germanium Alloys." Materials 12, no. 4 (February 14, 2019): 570. http://dx.doi.org/10.3390/ma12040570.

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We report a numerical study of the field assisted sintering of silicon germanium alloys by a finite element method, which takes into account contact resistances, thermal expansion and the thermoelectric effect. The distribution of electrical and thermal fields was analyzed numerically, based on the experimental data collected from spark plasma sintering (SPS) apparatus. The thermoelectric properties of Si-Ge used within the simulation were considered as the function of density and the sintering temperature. Quantitative estimation of the temperature distribution during the sintering pointed to a significant, up to 60 °C, temperature difference within the specimen volume for the case of the sintering temperature at 1150 °C.

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Qiu, Jian, Ya Dong Gong, Jun Cheng, and Yue Ming Liu. "Thermal Simulation of Peel Grinding Process." Applied Mechanics and Materials 16-19 (October 2009): 590–95. http://dx.doi.org/10.4028/www.scientific.net/amm.16-19.590.

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This paper describes the grinding temperature characteristics in peel grinding. Some mathematical models such as average heat flux, triangular heat flux distribution and workpiece temperatures in the contact area are built. Using triangular heat flux model, the heat flow transferred to wheel and workpiece are analyzed. A 2D FEM model for thermal aspects of peel grinding process is presented and a finite element algorithm is implemented to solve the nonlinear problem. Finally, a peel grinding thermal field experiment was present.

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Qian, Wen Xue, Xiao Wei Yin, and Li Yang Xie. "Temperature Field Simulation Analysis of High Temperature Box." Advanced Materials Research 211-212 (February 2011): 925–29. http://dx.doi.org/10.4028/www.scientific.net/amr.211-212.925.

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High temperature box is wildly used in many fields. Alone with the increasing of the requirement temperature, the temperature of it becomes more and more high. But it is difficult to test the temperature when the temperature is greater than 2000°C. In this paper, the thermal field of high temperature box is analyzed by finite element method, the result show that the temperature satisfies the design objects.

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Ponce-Farfán, Cristian, David Santillán, and Miguel Á. Toledo. "Thermal Simulation of Rolled Concrete Dams: Influence of the Hydration Model and the Environmental Actions on the Thermal Field." Water 12, no. 3 (March 19, 2020): 858. http://dx.doi.org/10.3390/w12030858.

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Mathematical models for the simulation of the thermal evolution of roller-compacted concrete (RCC) dams during construction constitute an important tool for preventing excessive temperature rise, which may lead to cracking and losses of functionality. Here, we present a framework for the simulation of the thermal process. We define the boundary conditions of the problem using a careful description that incorporates the main heat exchange mechanisms. We adopt both a non-adiabatic and an adiabatic heat generation model for the simulation of the cement hydration. Our numerical framework lets us study the effect of the adopted heat generation model on the thermal field. Moreover, we study the influence of the weather conditions on the evolution of the hydration, and on the starting date of construction. Our simulations have shown that the hydration model has an important influence over the temperature field during the construction and the heat generation rate. Moreover, the hydration process and the temperature evolution are driven by the weather conditions. Once the next lift is cast, its thermal insulation effect makes the hydration take place under quasi-adiabatic conditions. As expected, dams built in cold months are prone to dissipate more heat than those built in warm seasons.

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Yang, Xiuzhi, Chunjie Yang, Chunfa Dong, Xinhua Xiao, Wenlin Hua, and Xiangjie Wang. "Finite Element Simulation of Thermal Field in Double Wire Welding." Journal of Materials Science and Chemical Engineering 04, no. 12 (2016): 10–21. http://dx.doi.org/10.4236/msce.2016.412002.

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Huangfu, Lujiang, and Chang-Chun Zhu. "The numerical simulation of thermal effects in silicon field emitters." Ultramicroscopy 79, no. 1-4 (September 1999): 189–94. http://dx.doi.org/10.1016/s0304-3991(99)00088-1.

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32

Suh, Min-hо, and Tai-yong Lee. "Thermal Field Simulation of LEC Process by Finite Volume Method." IFAC Proceedings Volumes 31, no. 11 (June 1998): 523–27. http://dx.doi.org/10.1016/s1474-6670(17)44980-9.

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Millett, Paul C., Dieter Wolf, Tapan Desai, Srujan Rokkam, and Anter El-Azab. "Phase-field simulation of thermal conductivity in porous polycrystalline microstructures." Journal of Applied Physics 104, no. 3 (August 2008): 033512. http://dx.doi.org/10.1063/1.2964116.

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Peng Kai and Liu Da-Gang. "Numerical simulation and study of three-dimensional thermal field emission." Acta Physica Sinica 61, no. 12 (2012): 121301. http://dx.doi.org/10.7498/aps.61.121301.

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Vlasov, N. M., and I. I. Fedik. "Simulation of Material Fracture in the Field of Thermal Stresses." Journal of Thermal Stresses 32, no. 8 (July 17, 2009): 755–67. http://dx.doi.org/10.1080/01495730903014829.

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36

Ren, Xiaoying, Xiao Li, Fengqi Wei, Hailong Yin, and Yonghong Wen. "Thermal Field Simulation of Ag Nanoparticles Induced by Femtosecond Laser." Integrated Ferroelectrics 208, no. 1 (June 12, 2020): 128–37. http://dx.doi.org/10.1080/10584587.2020.1728724.

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37

Guo-feng, Yao, and Chen Guang-nan. "Numerical simulation of transient thermal field in laser melting process." Applied Mathematics and Mechanics 25, no. 8 (August 2004): 945–50. http://dx.doi.org/10.1007/bf02438803.

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38

Yang, Guang, Wei Wang, Lan Yun Qin, and Xing Lang Wang. "Numerical Simulation Temperature Field of Laser Cladding Titanium Alloy." Applied Mechanics and Materials 117-119 (October 2011): 1633–37. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.1633.

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Abstract: In order to control the thermal stress of cladding, a numerical simulation of temperature field during multi-track & multi-layer laser metal deposition (LMD) process is developed with ABAQUS based on “element birth and death” technology of FEM. The dynamic variances of temperature field and stress field of forming process are calculated with the energy compensation of interaction between molten pool-powder. The temperature field, temperature gradient, thermal stress field and distribution of residual stress are obtained. The results indicate that although the nodes on different layers are activated at different time, their temperature variations are similar. The temperature gradients of samples are larger near the molten pool area and mainly along z-direction.

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Cheng, Tao, and Ke Qin Yan. "Numerical Simulation for the Thermal Stress of Composite Wall Insulation System." Advanced Materials Research 168-170 (December 2010): 875–79. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.875.

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This paper presents the thermal stress characteristics of polystyrene plate - thin plaster wall. Based on thermal stress analysis module of ANSYS software, a three-dimensional element solid5 is selected to mesh the wall model, which can simulate the coupling effects of thermal stress and structural stress field. The critical temperature of hot and cold cycles is taken as the critical temperature condition, which is imposed on the calculation model. Windowless Wall and window wall were modeled separately. Temperature field, thermal stress, and deformation distribution were proposed after comparing and analyzing the two simulation results. Numerical simulation results indicate that: (1) Whether in high or low temperatures, window or windowless, polystyrene plates thin plaster wall insulation system has very good thermal insulation properties；(2) Polystyrene plate - thin plaster wall insulation system is influenced by the temperature stress. Different stress fields concentrate significantly around windows and in the middle of wall especially around the windows. In fact, it is relatively same as the law of cracks around the windows.

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Li, Yong Gang, Yang Dong Hu, Lian Ying Wu, and Hong Li. "Numerical Simulation Analysis of Temperature Field on Silicon Carbide Synthesis Furnace." Materials Science Forum 686 (June 2011): 494–500. http://dx.doi.org/10.4028/www.scientific.net/msf.686.494.

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Based on heat percolation theory and thermal coefficient equation of various layer-compositors, the effective thermal conductivity of silicone carbide（SiC）synthetic material was obtained, and the effective heat capacity under the complicated thermal effect in the process of raising temperature figured out in the present investigation. Based on the experimental results and using the finite element numerical model of nonlinear dynamic heat transfer process, the temperature field in SiC synthesis furnace was simulated by open source finite element software-FECsoft. And the dynamic laws of temperature distribution and thermal gradient of the furnace, the relation between the furnace core’s temperature and the energy consumption and output were obtained. Based on the above analysis, some measures to save energy and increasing output of the silicon carbide synthesis furnace were proposed in this paper.

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Abba, Habu Yusuf, Roshida Abdul Majid, Muhammad Hamdan Ahmed, and Olutobi Gbenga Ayegbusi. "VALIDATION OF DESIGNBUILDER SIMULATION ACCURACY USING FIELD MEASURED DATA OF INDOOR AIR TEMPERATURE IN A CLASSROOM BUILDING." Journal of Tourism, Hospitality and Environment Management 7, no. 27 (March 8, 2022): 171–78. http://dx.doi.org/10.35631/jthem.727014.

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Studies have shown that a very wide range of parameters affect thermal comfort of building occupants. Heat transfer through the roofs has been identified as one of the causes of overheating in building interiors. Building Performance Simulation tools can be used to determine appropriate roof design parameters with optimum thermal performance in tropical climates like Nigeria. However, ensuring the reliability of the simulation results is essential for both occupants and designers. Therefore, this study seeks to verify and validate the accuracy of simulation results of DesignBuilder as a simulation tool for the present research works on roof thermal performance. The study primarily focuses on the impact of roof design on the air temperature in the indoor learning environment. Validation is examined by comparing the measured daily indoor air temperature of Kofar Wambai Secondary School Classroom, Bauchi city data and the simulation results. Comparative analysis indicate that the % deviation of field measured and simulated results for the tested days (18th and 21st September, 2018) were 2.39% and 1.25% respectively. The R2 results indicated 99% and 75% correlation between the simulated and measured indoor temperature on the tested days.These results agreed with the recommendations of a study by (Andelkovic et al, 2016) which reported that the marginal value of R2 for measurements and simulations validation is R2 ≥ 75%. Therefore, DesignBuilder can be employed to evaluate roof thermal performance as well as predict indoor air temperature of classroom buildings.

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Mallick, Ashis, Rajiv Ranjan, Dilip K. Prasad, and Ranjan Das. "INVERSE PREDICTION AND APPLICATION OF HOMOTOPY PERTURBATION METHOD FOR EFFICIENT DESIGN OF AN ANNULAR FIN WITH VARIABLE THERMAL CONDUCTIVITY AND HEAT GENERATION." Mathematical Modelling and Analysis 21, no. 5 (September 20, 2016): 699–717. http://dx.doi.org/10.3846/13926292.2016.1225606.

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In the present work, various thermal parameters of an annular fin subjected to thermal loading are inversely estimated using differential evolution (DE) method. In order to obtain the temperature field, the second order nonlinear differential equation for heat transfer with variable thermal conductivity and internal heat generation is solved using Homotopy Perturbation Method (HPM). Classical thermoelasticity approach coupled with an HPM solution for temperature field is employed for the forward solution of thermal stresses. It is interesting that the internal heat generation does not affect the radial stresses, while the temperature field and the tangential stresses are influenced by the heat generation parameters. As the tangential stresses are mainly responsible for mechanical failure due to thermal loading in an annular fin, the unknown thermal parameters are inversely estimated from a prescribed tangential stress field. The reconstructed stress fields obtained from the inverse parameters are found to be in good agreement with the actual solution.

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Lin, Huan Qing, Wen Zhuang Lu, Dun Wen Zuo, Chun Yang, and Feng Xu. "Simulation of Gas Flow Field in HFCVD System for CVD Diamond Growth." Key Engineering Materials 431-432 (March 2010): 21–24. http://dx.doi.org/10.4028/www.scientific.net/kem.431-432.21.

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The thermal blockage and thermal round flow in HFCVD system for CVD diamond growth will lead to un-stability of product quality. Finite element method has been used to simulate the gas flow field around the cutting tool substrate within a HFCVD diamond reactor. Experiments have been done to prove the simulation results. Excellent agreement between simulation and experiment was obtained by depositing of CVD diamond coated cutting tool. The thermal blockage and thermal round flow in HFCVD system decrease by using a hollow substrate holder. High quality CVD diamond coating can be obtained using a hollow substrate holder.

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Wang, Ming Di, Xiao Ling Hang, Kai Bo Guo, Shi Hong Shi, and Lin Ning Sun. "Numerical Simulation on Stress Field in Inside-Beam Laser Cladding." Advanced Materials Research 887-888 (February 2014): 1309–12. http://dx.doi.org/10.4028/www.scientific.net/amr.887-888.1309.

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In the process of deposition, the moving high energy heat source effect on the metal entity, and form the molten pool and the temperature field of directional conduction. Powder is accumulated in the substrate point by point, molten powder instantly solidify into a solid which is combined with substrate (or sediment) to reach metallurgical combination, from the perspective of the thermodynamic, the temperature field produced by coupling ring of heat source is regarded as a moving load to the base plate and the sedimentary section, and transient thermal stress field is generated, the load and boundary conditions (temperature field) of thermal stress field change over time, at the same time, the solution domain of thermal stress field change over time as a result. Therefore, through the life and death unit technology (ANSYS finite element analysis software of advanced analysis techniques) combined with the circulation order, the simulation of point to add deposition process is realized.

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Yuan, Xun Feng, Rui Xia Hu, Ying Li, Ying Zhou, Lei Li, and Lei Wei. "Simulation of Temperature Field in the Solidification Process of Cast." Advanced Materials Research 1088 (February 2015): 834–37. http://dx.doi.org/10.4028/www.scientific.net/amr.1088.834.

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The direct difference method is used for solving the heat conduction equation, and simulate the solidification process of T-type cast. The effect of the thermal resistance at cast/mold on distribution of temperature and the solidification rate of corner region is studied. The results show that during the solidification process of T-type, the riser region first solidified, followed by the right half, finally the solidified part was around the corner. With the decrease of the thermal resistance at cast/mold, the temperature of the corner area decreased more quickly and the solidification rate increased. In the actual design process, the material with the good thermal conductivity should be selected for the cast mold to accelerate the solidification rate of the corner region, so the solidification rate of the corner and riser region tend towards harmony, which reducing the formation of various types of defects, and the quality and mechanical properties of the casts were improved.

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Tang, Min, and Fang Jia. "Temperature Field Simulation on the Connecting Rod of High Speed Press." Advanced Materials Research 482-484 (February 2012): 322–26. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.322.

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This study is focused on the temperature field distribution of the connecting rod. The temperature field and the time for reaching thermal equilibrium condition of the rod in a certain working environment are examined by means of finite element analysis (FEA). A verification experiment is implemented on the connecting rod. Comparison between our experiment and simulation shows that simulation values are in good agreement with experimental data. Findings from the study are supposed to provide a basis for reduction of the thermal deformation of rod as well as for improvement of the thermal characteristics and precision of high speed press.

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ASHRAF, MUHAMMAD, and M. ANWAR KAMAL. "NUMERICAL SIMULATION OF MHD STAGNATION POINT FLOW TOWARDS A HEATED AXISYMMETRIC SURFACE." ANZIAM Journal 52, no. 3 (January 2011): 301–8. http://dx.doi.org/10.1017/s1446181111000708.

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AbstractThe problem of stagnation point flow with heat transfer of an electrically conducting fluid impinging normally on a permeable axisymmetric surface in the presence of a uniform transverse magnetic field is analysed. The governing nonlinear differential equations and their associated boundary conditions are reduced to dimensionless form using suitable similarity transformations. Comparison with previously published work shows good agreement. Effects of the injection–suction parameter, magnetic parameter and Prandtl number on the flow and thermal fields are presented. The investigations show that the wall shear stress and heat transfer rate from the surface increase with increased applied magnetic field. An increase in the velocity and thermal boundary layer thicknesses is observed with an increase in the wall injection, while the velocity and thermal boundary layers become thinner when increasing the wall suction and applied magnetic field.

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Xu, Qing, Guo-Da Chen, Ji-An Wang, Ji-Yang Wang, Ju-Ming Zhang, and Wei-An Gao. "Mathematical simulation of geotemperature field and thermal stress field in Sanjiang region of Yunnan." Acta Seismologica Sinica 6, no. 4 (November 1993): 857–66. http://dx.doi.org/10.1007/bf02651821.

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TAKADA, NAOKI, and AKIO TOMIYAMA. "NUMERICAL SIMULATION OF ISOTHERMAL AND THERMAL TWO-PHASE FLOWS USING PHASE-FIELD MODELING." International Journal of Modern Physics C 18, no. 04 (April 2007): 536–45. http://dx.doi.org/10.1142/s0129183107010772.

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For interface-tracking simulation of two-phase flows in various micro-fluidics devices, we examined the applicability of two versions of computational fluid dynamics method, NS-PFM, combining Navier-Stokes equations with phase-field modeling for interface based on the van der Waals-Cahn-Hilliard free-energy theory. Through the numerical simulations, the following major findings were obtained: (1) The first version of NS-PFM gives good predictions of interfacial shapes and motions in an incompressible, isothermal two-phase fluid with high density ratio on solid surface with heterogeneous wettability. (2) The second version successfully captures liquid-vapor motions with heat and mass transfer across interfaces in phase change of a non-ideal fluid around the critical point.

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Yao, Lei, Zheng Fang, and Zhang Ge. "The Numerical Simulation Research of Thermal Mechanical Simulation Compression Behavior with Uneven Temperature on End." Materials Science Forum 762 (July 2013): 368–73. http://dx.doi.org/10.4028/www.scientific.net/msf.762.368.

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The study has been performed concerning the influence of temperature field created by heat conduction between sample and the anvils, and the influence of lubrication condition (friction coefficient) on thermal mechanical compression test with numerical simulation, with regard to deformation resistance and distributions of strain and strain rate. The results show that temperature field has an effect on deformation resistance and distributions of strain and strain rate. That will influence on the results from thermal mechanical simulation tests. Further, the results also show that friction coefficient has no influence on deformation resistance, but the friction coefficient will result in uneven distribution of strain and strain rate.

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