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Online since: May 2014
Authors: Ying Ming Su, Yu Chou Wu
In this study, we made site surveys for the dimension and the computational fluid dynamics (CFD)-based simulations to predict the wind field of Eryi Lou.
In the CFD analysis, we considered the incompressible isothermal turbulent airflow to examine the interaction of the natural ventilation effected by its unique shape.
The inlet boundary condition in CFD computations of the atmospheric boundary layer (ABL) flow was used to model the associated atmospheric processes.
Numerical computations by the CFD software ACE+® were performed to explore the wind field structure characterized by the interaction of wind flow with earthen building.
This research intends to integrate the detailed analysis via the CFD-based simulations with the designers from realistic physical sense for design an optimal architecture.
In the CFD analysis, we considered the incompressible isothermal turbulent airflow to examine the interaction of the natural ventilation effected by its unique shape.
The inlet boundary condition in CFD computations of the atmospheric boundary layer (ABL) flow was used to model the associated atmospheric processes.
Numerical computations by the CFD software ACE+® were performed to explore the wind field structure characterized by the interaction of wind flow with earthen building.
This research intends to integrate the detailed analysis via the CFD-based simulations with the designers from realistic physical sense for design an optimal architecture.
Online since: May 2013
Authors: P.L. Mtui
Box 35131
Dar es Salaam, Tanzania
Email: plmtui@yahoo.com
Keywords: CFD, numerical simulation, thermal oxidation, chemical species, waste incineration
Abstract.
The CFD analysis provides three-dimensional view of thermal and gas flow field inside the thermal oxidizer chamber.
The performance of this method is demonstrated and discussed based on the results of the test simulations.
Field tests (not reported here) indicate excess CO emissions therefore prompted to undertake CFD simulation to troubleshoot oxidizer the observed problem.
The CFD results provided guidelines to redesign the old oxidizer resulting into better performance.
The CFD analysis provides three-dimensional view of thermal and gas flow field inside the thermal oxidizer chamber.
The performance of this method is demonstrated and discussed based on the results of the test simulations.
Field tests (not reported here) indicate excess CO emissions therefore prompted to undertake CFD simulation to troubleshoot oxidizer the observed problem.
The CFD results provided guidelines to redesign the old oxidizer resulting into better performance.
Online since: January 2013
Authors: Li Xiang Zhang, Hong Ming Zhang
The paper presents numerical prediction of cavitation erosion on a Francis turbine runner using CFD code.
In recent years, due to the rapid development in CFD technology and computer hardware, numerical cavitating flow simulations have been applied to hydraulic turbine.
The profile and the energy of the pressure waves emitted during cavity collapse were evaluated by numerical simulation.
OpenFOAM is an object-oriented C++ library of classes and routines of use for writing CFD codes.
Simulation results have shown that the cavitation erosion in Francis turbine are well predicted qualitatively.
In recent years, due to the rapid development in CFD technology and computer hardware, numerical cavitating flow simulations have been applied to hydraulic turbine.
The profile and the energy of the pressure waves emitted during cavity collapse were evaluated by numerical simulation.
OpenFOAM is an object-oriented C++ library of classes and routines of use for writing CFD codes.
Simulation results have shown that the cavitation erosion in Francis turbine are well predicted qualitatively.
Online since: February 2012
Authors: Zheng Fu Zhang, Jun Wei Wang, Feng Bao
Using the VOF model , the jet shape of the nozzle will be simulated through a commercial CFD software 'FLUENT'.
The CFD simulation results shows that the jet shape of the nozzle is oscillate in a fixed period.
Computational Procedure A commercial CFD software 'FLUENT' has been used for the simulation.
Using the VOF model, the nozzle jet shape can be simulated by CFD software.
Wang: Numerical simulation of the wake flow behind trapezoidal bluff bodies.
The CFD simulation results shows that the jet shape of the nozzle is oscillate in a fixed period.
Computational Procedure A commercial CFD software 'FLUENT' has been used for the simulation.
Using the VOF model, the nozzle jet shape can be simulated by CFD software.
Wang: Numerical simulation of the wake flow behind trapezoidal bluff bodies.
Online since: November 2011
Authors: Yan Lei, Hong Guang Zhang, Xiao Lei Bai, Da Sen Zhou
Together with experimental test, the CFD simulation is completed basing on a 3D model of the PWS rotor channel.
Both the experiment and CFD simulation aim to analyze the influence of PWS on the diesel engine exhaust emissions.
CFD Simulation Pressure-wave supercharger is designed to directly transfer energy of the exhaust gas to the fresh charge.
In this simulation case, the CFD solution is iterated from A1 to A7.
CFD Simulation Results The CFD simulation results of the flow inside the rotor channel are seen in Figure 5.
Both the experiment and CFD simulation aim to analyze the influence of PWS on the diesel engine exhaust emissions.
CFD Simulation Pressure-wave supercharger is designed to directly transfer energy of the exhaust gas to the fresh charge.
In this simulation case, the CFD solution is iterated from A1 to A7.
CFD Simulation Results The CFD simulation results of the flow inside the rotor channel are seen in Figure 5.
Online since: July 2015
Authors: Al Khalid Othman, Hushairi Zen, Mohd Azlan Ismail
In this study, simulations are performed on a centrifugal pump running in turbine mode using a commercial CFD software.
Euroflo centrifugal pump with back pull feature was selected for the CFD model.
The CFD analysis was set to compute in steady-state conditions.
Conclusion CFD simulations of an end suction centrifugal pump operating at a specific speed of 70 units have been described in this paper.
It can be concluded that the prediction of the PAT performance using CFD is viable.
Euroflo centrifugal pump with back pull feature was selected for the CFD model.
The CFD analysis was set to compute in steady-state conditions.
Conclusion CFD simulations of an end suction centrifugal pump operating at a specific speed of 70 units have been described in this paper.
It can be concluded that the prediction of the PAT performance using CFD is viable.
Online since: January 2011
Authors: Bi Feng Yin, Yong Hong Fu, Xi Jun Hua, Pei Yun Zhang, Yan Hu Zhang, X.K. Liu
2D CFD Analysis of Micro Arc-groove on the Surface of Tribopairs
P.Y.
And then CFD is selected and accepted gradually to be a timely way to study complicated lubrication problems.
In addition, the "engine oil" and "steel" in CFD codes are defined as fluid and wall materials in calculation models, separately.
The surfaces throughout the simulations were assumed to be rigid.
Numerical simulation results and validation experiments are compared, and some conclusions of qualitative evaluation can be drawn to non-smooth application of lubrication problem.
And then CFD is selected and accepted gradually to be a timely way to study complicated lubrication problems.
In addition, the "engine oil" and "steel" in CFD codes are defined as fluid and wall materials in calculation models, separately.
The surfaces throughout the simulations were assumed to be rigid.
Numerical simulation results and validation experiments are compared, and some conclusions of qualitative evaluation can be drawn to non-smooth application of lubrication problem.
Online since: July 2014
Authors: Cun Hui, Wei Tao, Yuan Qing Wang, Sheng Lin Zheng, Bin Wang
Simulation and analysis of heat transfer process in internal recycle double skin facades(DSF) of the established standard model were carried out by computational fluid dynamics(CFD).
Most DSF studies now are based on CFD simulation.
Conclusions Through the simulation and analysis of the DSF using CFD method, the conclusions can be get as follows: (1) Relatively stable continuous flow field can be obtained through DSF.
Proceedings of Building Simulation.
"Three-dimensional simulation with a CFD tool of the airflow phenomena in single floor double-skin facade equipped with a venetian blind."
Most DSF studies now are based on CFD simulation.
Conclusions Through the simulation and analysis of the DSF using CFD method, the conclusions can be get as follows: (1) Relatively stable continuous flow field can be obtained through DSF.
Proceedings of Building Simulation.
"Three-dimensional simulation with a CFD tool of the airflow phenomena in single floor double-skin facade equipped with a venetian blind."
Online since: October 2010
Authors: Jin Li Wang, Lin Cai, Hong Tao Zheng
The Numerical Simulation of Pure-oil Lubrication Journal Bearing
Cai Lin1,a, Jinli Wang2,b, Hongtao Zheng1,c
1
College of Power Science and Engineering, Harbin Engineering University, Harbin 150001,
Heilongjiang, P.R.
a cailin@hrbeu.edu.cn, bwangjinli@hrbeu.edu.cn, czhenghongtao@hrbeu.edu.cn Keywords: Journal bearing CFD viscosity-temperature effect Abstract.
The simulation of journal bearing oil film flow field is done using CFD, and the viscosity-temperature and cavitation effect have been consider.
Papadopoulos CFD analysis of journal bearing hydrodynamic lubrication by Binghamlubricant.
[4] Jiang Li, Hao shengChen, Evaluation on Applicability of Reynolds Equation for Squared Transverse Roughness Compared to CFD[J].
a cailin@hrbeu.edu.cn, bwangjinli@hrbeu.edu.cn, czhenghongtao@hrbeu.edu.cn Keywords: Journal bearing CFD viscosity-temperature effect Abstract.
The simulation of journal bearing oil film flow field is done using CFD, and the viscosity-temperature and cavitation effect have been consider.
Papadopoulos CFD analysis of journal bearing hydrodynamic lubrication by Binghamlubricant.
[4] Jiang Li, Hao shengChen, Evaluation on Applicability of Reynolds Equation for Squared Transverse Roughness Compared to CFD[J].
Online since: May 2012
Authors: Zheng Qi Gu, Yong Zhang, Zhen Wang, Yong Yu
Study on Influence Law of Urban Architectural Structure on the Automobile Exhaust Diffusion Based on CFD
Yong Zhang1,2,a, Zhengqi Gu 1,2,b, Zhen Wang 1,c and Yong Yu 1,d
1.
(4) Considering the flow within the simulation area as incompressible fluid.
Then the fluent module of Ansys12.0 software is selected to execute the three-dimensional CFD simulation.
Summarized as follows: (1) The numerical simulation method of exhaust diffusion for 3D urban can be used to urban crossroads automobile exhaust diffusion simulation, prediction and assessment.
In Chinese [4].Zhang qiang.CFD Numerical Simulation on vehicle exhaust gas.
(4) Considering the flow within the simulation area as incompressible fluid.
Then the fluent module of Ansys12.0 software is selected to execute the three-dimensional CFD simulation.
Summarized as follows: (1) The numerical simulation method of exhaust diffusion for 3D urban can be used to urban crossroads automobile exhaust diffusion simulation, prediction and assessment.
In Chinese [4].Zhang qiang.CFD Numerical Simulation on vehicle exhaust gas.