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Online since: February 2025
Authors: Lucas Queiros Monteiro, Paula Giarolla Silveira, Jefferson Luiz Gomes Corrêa, Irineu Petri Jr.
Additionally, numerical simulation emerges as an essential tool for understanding and optimizing these processes.
In this context, numerical simulation emerges as an essential tool, enabling a detailed analysis of heating during microwave drying of coffee beans [16,17].
This difference can be explained as the numerical simulation does not consider the mass transfer and moisture variation during the process.
Catuai) using a hexagonal microwave dryer designed by numerical simulations, J.
Yeretzian, Modeling and Validation of Heat and Mass Transfer in Individual Coffee Beans during the Coffee Roasting Process Using Computational Fluid Dynamics (CFD), Chimia. 67 (2013) 291-294
In this context, numerical simulation emerges as an essential tool, enabling a detailed analysis of heating during microwave drying of coffee beans [16,17].
This difference can be explained as the numerical simulation does not consider the mass transfer and moisture variation during the process.
Catuai) using a hexagonal microwave dryer designed by numerical simulations, J.
Yeretzian, Modeling and Validation of Heat and Mass Transfer in Individual Coffee Beans during the Coffee Roasting Process Using Computational Fluid Dynamics (CFD), Chimia. 67 (2013) 291-294
Online since: January 2012
Authors: Giuseppe Falvo D’urso Labate, Diana Massai, Umberto Morbiducci, Marco A. Deriu, Tamara C. Bidone, Franco Maria Montevecchi
From the morphology provided by the mesoscale simulation, the mechanical properties of interest were computed by the FEM simulation [19].
Consolo and co-workers [23] applied a multiscale modeling tool to bioreactor system technology, by coupling computational fluid dynamics (CFD) and multi agent systems (MAS) modeling.
Hoogerbrugge, Dynamic Simulations of Hard-Sphere Suspensions under Steady Shear.
Warren, Dissipative particle dynamics: Bridging the gap between atomistic and mesoscopic simulation.
Lu, Multiscale modeling and simulation of polymer nanocomposites.
Consolo and co-workers [23] applied a multiscale modeling tool to bioreactor system technology, by coupling computational fluid dynamics (CFD) and multi agent systems (MAS) modeling.
Hoogerbrugge, Dynamic Simulations of Hard-Sphere Suspensions under Steady Shear.
Warren, Dissipative particle dynamics: Bridging the gap between atomistic and mesoscopic simulation.
Lu, Multiscale modeling and simulation of polymer nanocomposites.
Online since: February 2011
Authors: Guo Neng Li
Numerical simulation of characteristics of cross-flow heat transfer in pulsating flow
LI Guoneng
College of light industry, Zhejiang University of science & technology, Hangzhou, China
E-mail: gnlene@163.com
Keywords: heat transfer; pulsating flow; computational flow dynamics.
The resolution of computational grid is about 320,000 with emphasis near the wall. 80 mm 76 mm 1000 mm water inlet water inlet pulsating air inlet x y Fig. 1 Sketch map of the structure of cross-flow heat exchange pipe All simulations were carried out based on the CFD code FLUENT 6.3, which solves the conservation equations of mass, momentum and energy based on the finite difference method.
The resolution of computational grid is about 320,000 with emphasis near the wall. 80 mm 76 mm 1000 mm water inlet water inlet pulsating air inlet x y Fig. 1 Sketch map of the structure of cross-flow heat exchange pipe All simulations were carried out based on the CFD code FLUENT 6.3, which solves the conservation equations of mass, momentum and energy based on the finite difference method.
Online since: January 2012
Authors: Zhou Hua Qiu, Zhong Zeng, Huan Mei, Li Ping Yao, Qiu Ming Liu
A spectral element method for the numerical simulation of axisymmetric flow in Czochralski crystal growth
Zhouhua Qiu1, a, Zhong Zeng1, 2, b, Huan Mei1, Liping Yao, Qiuming Liu
1 Department of Engineering Mechanics, College of Resources and Environmental Science, Chongqing University, Chongqing 400044, PR China
2 State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China
aqiuzhouhua@cqu.edu.cn, bzzeng@cqu.edu.cn
Keywords: spectral element method; Czochralski growth; axisymmetric flow; Gauss-Radau
Abstract.
The simulation of Wheeler’s problem is chosen as a test case to validate the new method and four cases are considered, which are defined as follows A: ReX=100, ReC=0, Gr=0.
Sherwin, Spectral/hp Element Methods for CFD, Oxford University Press, London, 1999
The simulation of Wheeler’s problem is chosen as a test case to validate the new method and four cases are considered, which are defined as follows A: ReX=100, ReC=0, Gr=0.
Sherwin, Spectral/hp Element Methods for CFD, Oxford University Press, London, 1999
Online since: February 2013
Authors: Yu Ling Huang, Nian San Hu, Dao Bing Ji, De Fu Liu, Wei Ping Yin, Chao Jun Xiong, Yu Zhang
Monitoring data from all the sites were used to set initial and boundary conditions for the numerical simulations, and validate the numerical model.
A wide range of practical applications based on FLOW-3D had verified its feasibility and simulation accuracy.
In fact, it was the only commercially available CFD program that fully implements Hirt and Nichols’ (1981) volume-of-fluid (VOF) method for the computation of free-surface flows [18-20].
The horizontal velocity field simulation results in figure 7 displayed the same situation as those in figure 6.
Horizontal velocity field simulation results for the estuary of Xiangxi River in May. 16, 2010 (Positive values indicate flow into the Xiangxi River and negative values indicate flow out of the Xiangxi River.).
A wide range of practical applications based on FLOW-3D had verified its feasibility and simulation accuracy.
In fact, it was the only commercially available CFD program that fully implements Hirt and Nichols’ (1981) volume-of-fluid (VOF) method for the computation of free-surface flows [18-20].
The horizontal velocity field simulation results in figure 7 displayed the same situation as those in figure 6.
Horizontal velocity field simulation results for the estuary of Xiangxi River in May. 16, 2010 (Positive values indicate flow into the Xiangxi River and negative values indicate flow out of the Xiangxi River.).
Online since: February 2012
Authors: Shi Sha Zhu, Liu Tao
Abstract:The current flow and pressure drop of ER valve which is a new type power control valve could be adjusted by the electric field signal directly .In this paper, the fluid power control performance of concentric cylindrical ER valve and parallel plate-type ER valve based on ER principal is comparative studied .First power control equation has been analysed, and then flow simulation of internal flow field of ER valve has been taken based on FLUENT software.
Comparartion of the simulation results The effects of the electric flied intensity on the flow rate of the ER valve Utilizing the pre-processing software GAMBIT of the FLUENT to build a 3D model and meshing for the internal flow field of the two type of ER valves .because of.
Actually, the internal flow field of the ER valve is complex 3 d fluid movement, during the simulation processing, assumptions and setups have been made for the ER valve as follow: 1.Assuming that the ER fluid is uncompressionable and accords with the non-newtonian fluid with HB parameters; 2 Ignoring the effects of temperature on the fluid flied and taking the flow state as a laminar.
[8] S.M.chen,W.A.bullough CFD study of the flow in a radial cluth with a real electrorheological fluid.journal of physics:conference series,2009,149(4)1742-1751
Comparartion of the simulation results The effects of the electric flied intensity on the flow rate of the ER valve Utilizing the pre-processing software GAMBIT of the FLUENT to build a 3D model and meshing for the internal flow field of the two type of ER valves .because of.
Actually, the internal flow field of the ER valve is complex 3 d fluid movement, during the simulation processing, assumptions and setups have been made for the ER valve as follow: 1.Assuming that the ER fluid is uncompressionable and accords with the non-newtonian fluid with HB parameters; 2 Ignoring the effects of temperature on the fluid flied and taking the flow state as a laminar.
[8] S.M.chen,W.A.bullough CFD study of the flow in a radial cluth with a real electrorheological fluid.journal of physics:conference series,2009,149(4)1742-1751
Online since: April 2010
Authors: Michael Zinigrad, Maya Radune, F. Assous, Alex Radune
., P.O.B. 49377, Petach-Ticva, Israel
aradune@ariel.ac.il, balex@innodraw.com,
cassous@ariel.ac.il, dzinigrad@ariel.ac.il
Keywords: Mathematical modeling; simulation convection; diffusion; desulfurization;
metal-slag interface.
Shultz: Simulation of thermodynamic properties of slag melts, Proceedings of the 4th Molten Slags and Fluxes(International Conference, Sendai,Japan1992), p. 120 [4] M.
Conf. on CFD in the Miner.& Process Ind.
Shultz: Simulation of thermodynamic properties of slag melts, Proceedings of the 4th Molten Slags and Fluxes(International Conference, Sendai,Japan1992), p. 120 [4] M.
Conf. on CFD in the Miner.& Process Ind.
Online since: April 2022
Authors: Kamal Amghar, Abdelkader Filali, Najim Salhi, Jamal-Eddine Salhi
Numerical simulations are carried out to study the dynamic and thermal behavior influenced by the control parameters.
Simulations were performed on a machine with Intel Xeon CPU, 3.40 GHz and 64 GB of RAM.
Koseff, Numerical simulation of three dimensional flow in a cavity, International Journal for Numerical Methods in Fluids. 5, 6. (1985) 561-575
Salhi, Numerical simulation of forced convection turbulent in a channel with transverse baffles.
Benyoucef, Heat Transfer in Air Flow Past a Bottom Channel Wall-Attached Diamond-Shaped Baffle–Using a CFD Technique.
Simulations were performed on a machine with Intel Xeon CPU, 3.40 GHz and 64 GB of RAM.
Koseff, Numerical simulation of three dimensional flow in a cavity, International Journal for Numerical Methods in Fluids. 5, 6. (1985) 561-575
Salhi, Numerical simulation of forced convection turbulent in a channel with transverse baffles.
Benyoucef, Heat Transfer in Air Flow Past a Bottom Channel Wall-Attached Diamond-Shaped Baffle–Using a CFD Technique.
Online since: June 2013
Authors: Kai Hua Li, Rong Huang, Bo Wang
Modeling setting
2.1 Meshing
According the simulation, it has to reduce the effect of regional boundary to the simulation results.
Generally, increasing the computational domain can increase the accuracy of the simulation, but larger simulation area leads to more time-consuming calculation.
Conclusion This paper takes simulation buildings as the research object and NO, CO and H2 of automobile exhaust as the main pollutants, and using numerical simulation to calculate the buildings’ wind field in different direction and pollutant diffusion.
(4)The simulation results of different wind direction shows that the ventilation effect of the community is good when the crossing angle of wind direction and the inflow surface is 45 degrees, and the diffusion effect is better too.
Zhang, Modeling near-road air quality using a computational fluid dynamics model, CFD-VIT-RIT.
Generally, increasing the computational domain can increase the accuracy of the simulation, but larger simulation area leads to more time-consuming calculation.
Conclusion This paper takes simulation buildings as the research object and NO, CO and H2 of automobile exhaust as the main pollutants, and using numerical simulation to calculate the buildings’ wind field in different direction and pollutant diffusion.
(4)The simulation results of different wind direction shows that the ventilation effect of the community is good when the crossing angle of wind direction and the inflow surface is 45 degrees, and the diffusion effect is better too.
Zhang, Modeling near-road air quality using a computational fluid dynamics model, CFD-VIT-RIT.