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Online since: April 2015
Authors: Jang Hoo Seo, Seong Hyun Park, Sun Woo Lee
We also examined how the air exchange rate of the room, the loading factor of the sorptive materials, and the mass transfer coefficient influenced the sorptive performance; these effects were well reproduced experimentally with computational fluid dynamics (CFD) simulations.
Table 1 shows the details of the cases considered in the CFD analysis.
The boundary conditions for the CFD analysis are given in Table 2.
Model used for CFD analysis Fig. 2.
Cases considered in CFD analysis Case Temp.
Table 1 shows the details of the cases considered in the CFD analysis.
The boundary conditions for the CFD analysis are given in Table 2.
Model used for CFD analysis Fig. 2.
Cases considered in CFD analysis Case Temp.
Online since: January 2015
Authors: Wei Liu, Yun Fei Zhao, Xu Liu
Finally, the unsteady flow field of a reduced order model development trends and application prospect were analyzed, and pointing out that the CFD simulation is still accurately predict the plane stability and handling the most important method.
In addition, the scope of application of reduced-order model is currently mostly other simple shape of the wing subsonic, transonic simulation, simulation of supersonic complex shape to be further developed.
Therefore, CFD method is still accurate prediction of aircraft stability and handling of the most important methods.
NonlinearDynamicsAnalysisofrMechanism of slender WIng Rock and study of Numerical Simulation Method [D].
Aircraft multi degree of freedom coupling rock movement numerical simulation research [D].
In addition, the scope of application of reduced-order model is currently mostly other simple shape of the wing subsonic, transonic simulation, simulation of supersonic complex shape to be further developed.
Therefore, CFD method is still accurate prediction of aircraft stability and handling of the most important methods.
NonlinearDynamicsAnalysisofrMechanism of slender WIng Rock and study of Numerical Simulation Method [D].
Aircraft multi degree of freedom coupling rock movement numerical simulation research [D].
Online since: November 2013
Authors: Mutellip Ahmat, Zhi Wei Niu, Guzaiayi Abudoumijiti
Numerical Calculation and Theory of Friction Film
The CFD Numerical Theory.
CFD is the integral or partial differential equations was instead by the discrete algebraic.
Simulation of fluid film with Fluent software, can simulate the, relationship between some dynamic characteristics of fluid film and some related parameters.
[2] Houlin Liu, Liang Dong: The progress of mesh generation method in Fluid Mechanics CFD, Fluid Mechanics,2010,38(4).p.32-37 [3] Baoyan Li.
Fluid Mechanical, 38 (2010), p. 23-27 [7] Zhaogao Luan, Khonsari M.M: Numerical Simulations of the Flow Field around the Rings of Mechanical Seals.
CFD is the integral or partial differential equations was instead by the discrete algebraic.
Simulation of fluid film with Fluent software, can simulate the, relationship between some dynamic characteristics of fluid film and some related parameters.
[2] Houlin Liu, Liang Dong: The progress of mesh generation method in Fluid Mechanics CFD, Fluid Mechanics,2010,38(4).p.32-37 [3] Baoyan Li.
Fluid Mechanical, 38 (2010), p. 23-27 [7] Zhaogao Luan, Khonsari M.M: Numerical Simulations of the Flow Field around the Rings of Mechanical Seals.
Online since: December 2012
Authors: Feng Jin
In order to study the specialties of wave slamming on open-piled structures, a two-dimensional regular wave tank was established based on commercial CFD software FLUENT.
In the following sections, the two-dimensional regular wave tank was established based on commercial CFD software FLUENT.
Table 1 shows the comparison results of simulation and the experiment.
Numerical Simulation of Random Wave Slamming on Structures in the Splash Zone.
Prediction of Wave-in-deck Forces on Fixed Jacket-type Structures Based on CFD Calculations.
In the following sections, the two-dimensional regular wave tank was established based on commercial CFD software FLUENT.
Table 1 shows the comparison results of simulation and the experiment.
Numerical Simulation of Random Wave Slamming on Structures in the Splash Zone.
Prediction of Wave-in-deck Forces on Fixed Jacket-type Structures Based on CFD Calculations.
Online since: May 2012
Authors: Xiang Xu, Sheng Dian Wang, Yun Han Xiao, Xue Yao Wang
It indicates that the DEM method may be used as a powerful tool for the simulation of the gas-solid flow.
With the development of the computer technology, the computational fluid dynamics (CFD) has developed rapidly, which provide low-cost and high efficient design method [5-7].
Generally speaking, there are two methods for gas-solid two-phase flow simulation, namely Lagrangian and Eulerian approaches.
The CFD-DEM method is used to simulate the hydrodynamic character of gas-solid flow in fluidized bed.
It is shown that with the flexibility and accuracy, the DEM-CFD is a valuable direction for the dense gas-solid flow simulation Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51006106) and the National High Technology Research and Development of China 863 Program (2006AA05A103).
With the development of the computer technology, the computational fluid dynamics (CFD) has developed rapidly, which provide low-cost and high efficient design method [5-7].
Generally speaking, there are two methods for gas-solid two-phase flow simulation, namely Lagrangian and Eulerian approaches.
The CFD-DEM method is used to simulate the hydrodynamic character of gas-solid flow in fluidized bed.
It is shown that with the flexibility and accuracy, the DEM-CFD is a valuable direction for the dense gas-solid flow simulation Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51006106) and the National High Technology Research and Development of China 863 Program (2006AA05A103).
Online since: July 2014
Authors: Wei Na Liu, Li Feng Yang, Chun Yan Dong
Numerical Investigation on the Effect of Abrasive Property for Abrasive Flow Machining
Li-feng YANG a, Chun-yan DONG b and Wei-na LIU c
Department of Mechanical Engineering, Changchun University of Science and Technology, Changchun, Jilin Province 130022, China
aemail:yanglf55@163.com ,bemail:dongcy03@foxmail.com, cemail:wnliu77@163.com
Keywords: abrasive; volume fraction; aperture; CFD.
The simulation results show that the lower particle volume fraction may be in favour of the metal removal uniformity, but the processing time will be too long if too low fraction is selected.
The research on the AFM process of cylindrical runner by FLUENT simulation, and analyzes the different abrasive particle volume fraction machining different aperture cylindrical runner.
A study of abrasive waterjet characteristics by CFD simulation.Journal of Materials Processing Tech. 2004, Vol.153 , pp.488-493
Lim .Process modeling and CFD simulation of two-way abrasive flow machining.The International Journal of Advanced Manufacturing Technology, 2014, Vol.71(5-8), pp.1077-1086
The simulation results show that the lower particle volume fraction may be in favour of the metal removal uniformity, but the processing time will be too long if too low fraction is selected.
The research on the AFM process of cylindrical runner by FLUENT simulation, and analyzes the different abrasive particle volume fraction machining different aperture cylindrical runner.
A study of abrasive waterjet characteristics by CFD simulation.Journal of Materials Processing Tech. 2004, Vol.153 , pp.488-493
Lim .Process modeling and CFD simulation of two-way abrasive flow machining.The International Journal of Advanced Manufacturing Technology, 2014, Vol.71(5-8), pp.1077-1086
Online since: October 2011
Authors: Da Hua Jiang, An Gui Li, Fa En Shi, Zhi Hua Wang
This article uses CFD to study the efficiency of ventilation and pollution discharge of double polluted sources in the lab, and investigate the effect of air exhaust outlet location and air supply velocity on the performance of side ventilation.
CFD is one kind of rapidly developing computer aided design technology in recent years, CFD can be effective airflow organization simulation on indoor ventilation and air conditioning design before equipment installation.
This article explores effective ventilation method of double gaseous polluted Sources at side ventilation type by CFD.
H, room height), simulation is done at the air supply velocity of 0.4m/s,0.6m/s, 0.8m/s,1.0m/s,temperature field and velocity field is simplified as non-dimension at work area (y=3.5m,x=3m,z=0.1-1.8m).
Perceived air quality, sick building syndrome (SBS) ,symptoms and product ivity in an of office with two different pollution loads [J].Indoor Air,1999,(9):165-179 [4] Xianting Li,Bin Zhao.Numerical Simulation of Indoor Airflow[M].Beijing: Mechanical industry press,2009.in chinese
CFD is one kind of rapidly developing computer aided design technology in recent years, CFD can be effective airflow organization simulation on indoor ventilation and air conditioning design before equipment installation.
This article explores effective ventilation method of double gaseous polluted Sources at side ventilation type by CFD.
H, room height), simulation is done at the air supply velocity of 0.4m/s,0.6m/s, 0.8m/s,1.0m/s,temperature field and velocity field is simplified as non-dimension at work area (y=3.5m,x=3m,z=0.1-1.8m).
Perceived air quality, sick building syndrome (SBS) ,symptoms and product ivity in an of office with two different pollution loads [J].Indoor Air,1999,(9):165-179 [4] Xianting Li,Bin Zhao.Numerical Simulation of Indoor Airflow[M].Beijing: Mechanical industry press,2009.in chinese
Online since: December 2013
Authors: Hong Ming Zhang, Li Xiang Zhang
Simulation results have shown that the sand erosion rate on pressure side is more than on the suction side of the blade.
Unsteady numerical simulations, based on the two-phase homogeneous model, are performed together with wall pressure measurements and flow visualizations.
OpenFOAM is an object-oriented C++ library of classes and routines of use for writing CFD codes.
It has a set of basic features similar to any commercial CFD solver, such as turbulence models and discretization schemes.
Numerical simulation of turbidity current flow and sedimentation: I.
Unsteady numerical simulations, based on the two-phase homogeneous model, are performed together with wall pressure measurements and flow visualizations.
OpenFOAM is an object-oriented C++ library of classes and routines of use for writing CFD codes.
It has a set of basic features similar to any commercial CFD solver, such as turbulence models and discretization schemes.
Numerical simulation of turbidity current flow and sedimentation: I.
Online since: February 2011
Authors: Shu Lian Liu, Shui Ying Zheng, Zhen Ping Liu
The Reynolds Averaged Navier Stokes equations is solved by a commercial CFD program, FLUENT.
The commercial CFD program-Fluent is widely used to calculate fluid flow and heat transfer problem.
Other grid numbers are sent according to mesh quality and simulation time.
The velocity magnitude can be estimated by primary simulation.
A primary simulation of seal with 50% accentricity was conducted.
The commercial CFD program-Fluent is widely used to calculate fluid flow and heat transfer problem.
Other grid numbers are sent according to mesh quality and simulation time.
The velocity magnitude can be estimated by primary simulation.
A primary simulation of seal with 50% accentricity was conducted.
Online since: December 2014
Authors: Shuai Chen, Kui Ning Li
Fig.7 Model of exterior environment simulation room
3.2 Working Condition and Boundary Conditions of CFD
The running process of exterior environment simulation room in the rated conditions was simulated.
The boundary conditions of CFD was shown in Table 2.
Table.2 Boundary conditions of CFD Name Type Velocity (m3/h) temperature(k) New air inlet Velocity-inlet 1.875 298 Exhaust fan Velocity-inlet -2.98 323 Inlet of model Velocity-inlet 3.125 323 Outlet of model Outflow - - 3.3 Results of CFD In the CFD, the current condition was convergenced when all the absolute criteria was less than 10-5, import and export flow error was less than 10-8.
The results of CFD was same with the theoretical principle.
(2) Through simulation of exterior environment simulation room, the removable exterior environment simulation room can meet requirements of the test
The boundary conditions of CFD was shown in Table 2.
Table.2 Boundary conditions of CFD Name Type Velocity (m3/h) temperature(k) New air inlet Velocity-inlet 1.875 298 Exhaust fan Velocity-inlet -2.98 323 Inlet of model Velocity-inlet 3.125 323 Outlet of model Outflow - - 3.3 Results of CFD In the CFD, the current condition was convergenced when all the absolute criteria was less than 10-5, import and export flow error was less than 10-8.
The results of CFD was same with the theoretical principle.
(2) Through simulation of exterior environment simulation room, the removable exterior environment simulation room can meet requirements of the test