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Online since: October 2011
Authors: Chao Yang, Guo Guang Yang, Dan Ting Yue, Jin Liang Yuan
*Email: yc9316@163.com
Keywords: CFD analysis, parameter study, SOFC model, elementary surface reactions, transport process.
The CFD model simulation has been proved an effective method for SOFC research.
In this work, a 3D CFD model is developed to simulate the working processes in SOFC’s anode.
In this work, a fully 3D CFD approach is developed to model a SOFC anode including fuel channel, porous anode and interconnect structure.
CFD Solution Methods An 3D CFD code in Fortran language is developed to solve the governing equations.
The CFD model simulation has been proved an effective method for SOFC research.
In this work, a 3D CFD model is developed to simulate the working processes in SOFC’s anode.
In this work, a fully 3D CFD approach is developed to model a SOFC anode including fuel channel, porous anode and interconnect structure.
CFD Solution Methods An 3D CFD code in Fortran language is developed to solve the governing equations.
Online since: November 2011
Authors: Jun Cheng Jiang, Qing Wu Zhang, Yuan Yu
Keywords: gas explosion; dump vessel vented; CFD; maximum pressure
Abstract.
The CFD model used provided a reasonable agreement with the experimental results.
Numerical simulation.
Calculation domain and simulation conditions set-up.
Simulation results and discussion.
The CFD model used provided a reasonable agreement with the experimental results.
Numerical simulation.
Calculation domain and simulation conditions set-up.
Simulation results and discussion.
Online since: October 2011
Authors: Qian Wang, Xiao Jing Han, Ping Qi, Jing Wang
Simulation of Urea-SCR Catalytic Converter for Diesel Engine
Qian Wang, Xiaojing Han, Ping Qi and Jing Wang
College of Energy and Power Engineering,Jiangsu Univ,Zhenjiang,Jiangsu, China
email:yantaihanxiao@163.com
Key words: Diesel engine; Urea-SCR; NOX emissions; Simulation
Abstract: A three-dimensional model of a diesel Urea-SCR(Selective Catalytic Reduction)catalytic converter system was set up with aid of CFD software AVL FIRE coupled with available knowledge of SCR chemical reaction kinetics.
In this paper, a 3D model of a diesel Urea-SCR catalytic converter was set up with aid of CFD software AVL FIRE coupled with available knowledge of SCR chemical reaction kinetics.
The CFD model Mesh description and boundary conditions.
The 3D geometry and meshes of the Urea-SCR catalytic converter is built for the CFD simulation, as shown in Fig. 3.
The simulation and further optimization for diesel Urea-SCR catalytic converter is made in steady-state conditions.
In this paper, a 3D model of a diesel Urea-SCR catalytic converter was set up with aid of CFD software AVL FIRE coupled with available knowledge of SCR chemical reaction kinetics.
The CFD model Mesh description and boundary conditions.
The 3D geometry and meshes of the Urea-SCR catalytic converter is built for the CFD simulation, as shown in Fig. 3.
The simulation and further optimization for diesel Urea-SCR catalytic converter is made in steady-state conditions.
Online since: November 2005
Authors: João Jorge Ribeiro Damasceno, Luiz Gustavo Martins Vieira, Marcos A.S. Barrozo
This work objectified to apply Computational Fluid Dynamics (CFD) on Bradley Hydrocyclone and
compare the results from this technique to empirical models.
This work objectified to apply Computational Fluid Dynamics (CFD) on Bradley Hydrocyclone and compare the main results to Massarani's methodology [3].
Volume Fraction of Water (298.15 K) in the Bradley Hydrocyclone A value of 46% to underflow-to-throughput ratio was obtained for the CFD simulation while for the Massarani's Methodology the expected value was approximately 49%.
This result shows that this variable can be estimated successfully by CFD techniques.
Reduced Grade Efficiency (G') and Grade Efficiency (G) by Massarani's Methodology and CFD techniques.
This work objectified to apply Computational Fluid Dynamics (CFD) on Bradley Hydrocyclone and compare the main results to Massarani's methodology [3].
Volume Fraction of Water (298.15 K) in the Bradley Hydrocyclone A value of 46% to underflow-to-throughput ratio was obtained for the CFD simulation while for the Massarani's Methodology the expected value was approximately 49%.
This result shows that this variable can be estimated successfully by CFD techniques.
Reduced Grade Efficiency (G') and Grade Efficiency (G) by Massarani's Methodology and CFD techniques.
Online since: December 2014
Authors: De Sheng Li, Cheng Jie Dong, Wen Xu
A three-dimensional numerical model was developed based on CFD software FLUENT to simulate leakage process of liquid ammonia tank.
Numerical simulation analyses 3.1 Diffusion characteristics The gas velocity vector on the Z=45m plane at t=10s shows in Fig.3.
Mochida: CFD prediction of gaseous diffusion around a cubic model using a dynamic mixed SGS model based on composite grid technique[J].
[5] Yoshihide Tominaga, Ted Stathopoulos: CFD modeling of pollution dispersion in a street canyon: Comparison between LES and RANS[J].
[8]TAN Wei, LIU Xiao, LIU Yu-jin, et al: Modeling the two-phase cloud evolution from instantaneous flashing release using CFD[J].
Numerical simulation analyses 3.1 Diffusion characteristics The gas velocity vector on the Z=45m plane at t=10s shows in Fig.3.
Mochida: CFD prediction of gaseous diffusion around a cubic model using a dynamic mixed SGS model based on composite grid technique[J].
[5] Yoshihide Tominaga, Ted Stathopoulos: CFD modeling of pollution dispersion in a street canyon: Comparison between LES and RANS[J].
[8]TAN Wei, LIU Xiao, LIU Yu-jin, et al: Modeling the two-phase cloud evolution from instantaneous flashing release using CFD[J].
Online since: July 2012
Authors: Ke Xue Fang, Jian Long Hou, Peng Fei Zhang
Two-phase Flow CFD Simulations of Bubble Crystallization Tube
Pengfei Zhang1,a, Jianlong Hou1,b and Kexue Fang1,c
1School of Chemical Engineering, Tianjin University, Tianjin, 300072, China
azhangpf@tju.edu.cn, bhoujl2009@163.com, cfangkexue2009@163.com
Keywords: CFD, Gas-liquid two phase flow, Bubble crystallization, VOF model
Abstract.
Simulations agree well with experimental data.
Simulation region is shown in Fig.1.
At the beginning of the simulation process, in order to reduce simulation time, aeration-tube is filled with gas.
The verification of simulations.
Simulations agree well with experimental data.
Simulation region is shown in Fig.1.
At the beginning of the simulation process, in order to reduce simulation time, aeration-tube is filled with gas.
The verification of simulations.
Online since: February 2012
Authors: Wen Jiang Shi, Shan Cai Xiao, Ming Wei Ge, Ming Qin
The air cooling condition for 1.5MW wind rotor is evaluated by Computational fluid dynamics(CFD).
The optimization of the ribs arrangement is carried out based on CFD.
In the CFD simulation, the imcompressible continum equation and the steady Reynolds Averaged Navier Stokes equation are used (2) (3) where the subscript i or j is the i/j-th component of cooresponding vector. ρ is the density of the cooling air, p is the pressure and is the kinetic viscosity of the fluids.
Fig.2 shows the computational domain and the calculation grids used in the simulation.As shown in Fig.2(a) a semi-circle colume computational domain is used in the simulation.
About 4 millions are used for the the final simulation.
The optimization of the ribs arrangement is carried out based on CFD.
In the CFD simulation, the imcompressible continum equation and the steady Reynolds Averaged Navier Stokes equation are used (2) (3) where the subscript i or j is the i/j-th component of cooresponding vector. ρ is the density of the cooling air, p is the pressure and is the kinetic viscosity of the fluids.
Fig.2 shows the computational domain and the calculation grids used in the simulation.As shown in Fig.2(a) a semi-circle colume computational domain is used in the simulation.
About 4 millions are used for the the final simulation.
Online since: August 2015
Authors: Sivamani Seralathan, T. Micha Premkumar, S. Thangavel, G.P. Pradeep
asiva.seralathan@gmail.com, btmichamech@gmail.com
Keywords: CFD, vertical axis wind turbine, NACA profile, self starting
Abstract.
A study was done by Mclaren et al. [3, 4] by using CFD simulation of NACA 0015 on dynamic thrust and radial forces on a vertical axis wind turbine blade.
The study to show self-starting capability of cambered airfoil using CFD analysis was reported by Habtamu Beri and Yingxue Yao [5].
The commercial CFD code, ANSYS CFX 13.0© is used for the present numerical studies.
Ziada, CFD simulation of dynamic thrust and radial forces on a vertical axis wind turbine blade, Proceedings of the 15th annual conference of the CFD society of Canada, Toronto, Canada, 2007
A study was done by Mclaren et al. [3, 4] by using CFD simulation of NACA 0015 on dynamic thrust and radial forces on a vertical axis wind turbine blade.
The study to show self-starting capability of cambered airfoil using CFD analysis was reported by Habtamu Beri and Yingxue Yao [5].
The commercial CFD code, ANSYS CFX 13.0© is used for the present numerical studies.
Ziada, CFD simulation of dynamic thrust and radial forces on a vertical axis wind turbine blade, Proceedings of the 15th annual conference of the CFD society of Canada, Toronto, Canada, 2007
Online since: September 2011
Authors: Yao Zhen Li
Large Eddy Simulation of Flow around a Cylinder at Re=3900 Using a CFD Code
Yaozhen Li
School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou, China 730070
liyz@mail.lzjtu.cn
Keywords: LES, Flow around a Cylinder, Mesh Independent, Subgrid-Scale Model.
Research by Young M E [4] reveals that three-dimensional Reynolds averaged Navier-Stokes model (RANS) improves the simulation results, but the difference between simulation and experiment is still large.
Conclusions LES method of the commercial CFD code STAR-CD is used to simulate the flow around a cylinder at Re=3900, and the three-dimensional characteristics is verified.
Large Eddy Simulation of Flow Around One and Two Circular Cylinders.
Computational Fluid Dynamics Analysis-the Principle and Application of CFD Software, Tsinghua University Press, Beijing 2004
Research by Young M E [4] reveals that three-dimensional Reynolds averaged Navier-Stokes model (RANS) improves the simulation results, but the difference between simulation and experiment is still large.
Conclusions LES method of the commercial CFD code STAR-CD is used to simulate the flow around a cylinder at Re=3900, and the three-dimensional characteristics is verified.
Large Eddy Simulation of Flow Around One and Two Circular Cylinders.
Computational Fluid Dynamics Analysis-the Principle and Application of CFD Software, Tsinghua University Press, Beijing 2004
Online since: December 2013
Authors: Chih Sheng, Song Hao Wang, Huann Ming Chou, Shun Chih Yu
Continue the previous study, three dimensional CFD analyses has been conducted to optimize the design parameters and presented in this paper.
The width of the solar pannel chimney is 0.6m in the simulation.From the simulation, the effect of inclined chimney Thickness H1 on Flow Rate Q is plotted in Fig 5a.
Please notice that in this simulation H2 is fixed at 0.5m.
Please also notice that in this simulation H1 is fixed at 0.2m.
Model experiment and CFD Analysis on a solar assisted ventilation system.
The width of the solar pannel chimney is 0.6m in the simulation.From the simulation, the effect of inclined chimney Thickness H1 on Flow Rate Q is plotted in Fig 5a.
Please notice that in this simulation H2 is fixed at 0.5m.
Please also notice that in this simulation H1 is fixed at 0.2m.
Model experiment and CFD Analysis on a solar assisted ventilation system.