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Wind tunnel test and CFD simulation are widely used in the researches on the performance of railway wind-break wall and some important results are summarized.
CFD (Computational fluid dynamic analysis) simulation test research.
The scholars of Central South University such as JiangCuiXiang and LiangXifeng [9] used new type ultra-thin railway wind-break wall as test object to do the CFD simulation.
The current study of wind tunnel test and the CFD simulation test are to be improved.
Secondly, train was set as static processing in the CFD simulation in many cases without considering the train running speed.

CFD Simulations In order to study the smoke confinement when using air curtain, a series of CFD simulations would conducted by the FDS software, which was released by the National Institute of Standards and Technology (NIST).
Table 1 CFD simulation settings.
In order to verify the validity of the CFD building model, the simulation results were compared to the experimental data in published literatures [18-19].
The CFD simulations were conducted for full-open angles (90°) without the air curtain when the pressure differences across the door increase.
In this study, the regression analysis of C and D based on a series of CFD simulations by the FDS software for variable HRR and ACDV.

Aerodynamic Drag Reduction Design of Concept Sports Car Ying-chao Zhang1, a, Fang Zhao1, b, Shu-xin Shao1, c and Guang-yin Jin2, d 1State Key Laboratory of Automotive Simulation and Control, Jilin University, China 2China FAW Company Limited R&D Center, Jilin, China ayingchao@jlu.edu.cn, bzfzhaofang@gmail.com, cshaoshuxinjlu@163.com, dgabrielking@126.com Keywords: Sports car, shape optimization, CFD, Aerodynamics, drag reduction.
Simulations analysis of the aerodynamic for a sports car modeling before and after optimization was introduced in the paper by using commercial CFD code--STAR-CCM+.
These results can provide the basis for the modeling design and further optimization. 1 Introduction In the past few decades, with the rapid development of computer technology, CFD technology is widely applied into automotive design.
(2) Using CFD technology can we get comparative analysis and forecast performance of different schemes in the early stages of the design.
Numerical simulation based on aerodynamics in car design is a rapid, simple and effective design method [5]. 5 References [1] Fu LM, in: Aerodynamics of Road Vehicles [M].

Influence Analysis of Blade Fracture on Hydrodynamic Performance of Ducted Propellers Based on CFD Li Jian OU1, a, De Yu LI1, b, Wei Zhang1, c 1School of Civil Engineering and Transportation, South China University of Tech., China; aljou@scut.edu.cn, bdeyu@scut.edu.cn, c241222462@qq.com Keywords: CFD, Ducted Propeller, Hydrodynamic Performance Abstract: The numerical model of the unsteady flow field of ducted propellers is based on CFD (computational fluid dynamics).
Introduction CFD (computational fluid dynamics) is widely applied in the numerical simulation of flow field.
Because of its adaptability and accuracy, CFD gradually becomes an important tool in hydrodynamic research.
Compared with experiment research, numerical simulation has advantages of low-cost and short-period, and can obtain complete data and simulate the measurement of various data in practical operation process.
Hydrodynamic Performance Prediction of Some Propeller Based on CFD[J].

Using ANSYS-FLOTRAN CFD program, the finite element simulation is conducted by a series of procedures, such as three-dimensional model building of airflow inclination sensor, network modifying, loads applying and equation solving.
Solution of finite element method FLOTRAN CFD analysis function of ANSYS software is used for analysis 2d and 3d fluid flow of advanced tools.
(1)Selection of analyzing types: the choice of FLOTRAN CFD analysis capabilities of ANSYS software
With the slice observation function of FLOTRAN CFD observation of inside the temperature and velocity field distribution can be seen.
[3] Guoqiang.Wang, “Numerical simulation and practice on ANSYS,” [M].

The RANS equations for incompressible flow is solved with a Realizable k-ε turbulence model using the commercial CFD code STAR-CCM+.
CFD model Computation regions and boundary conditions.
Conclusions CFD analysis of the coolant mixing within the upper plenum of a PWR is conducted by solving the steady RANS equations for incompressible flow with Realizable k-ε turbulence model utilizing the commercial CFD code STAR-CCM+.
Part 1: Computational fluiddynamics(CFD) simulations.
Kang, CFD analysis for full vessel upper plenum in Maanshan Nuclear Power Plant, Nucl.

CFD Simulation and Mathematical Modeling In order to provide designers with concepts for flow-based integration of cleanroom layout by relating CFD simulation results to fundamental design parameters, we averaged out the several dimensions of the cleanroom from our previous simulations, and defined typical dimensions of the cleanrooms used in semiconductor or FPD fabrication industries.
Thus to find out the location and angle of inclination, we performed CFD simulations of cleanroom at various width and height under fixed inlet velocity of sm/5.0 .
These CFD simulation results may be shared with cleanroom designers for further steps of cleanroom designs.
In addition predicted results by both, the mathematical model and the CFD simulation, were reasonable and close to the observed cleanroom flow.
Consequently, the predicted angle/location of maximum flow inclination by our model agreed well with the CFD simulation results and with the expected trends.

We did the some simulation by CFD software.
Fig.7 Experiment Data with Three Tanks Blowing 3.4 Simulation with CFD We did some simulations with CFD softwares.
So simulation has good accuracy.
Further study of simulation will do with full-scale model.
The simulation research of high pressure air blowing the main ballast tank based on CFD.Ship Science and Technology,2012,34(9):56-60.In Chinese.

CFD model Computational fluid dynamics (CFD) was considered as the numerical simulations on the flow field which was controlled by three basic equations, namely the mass conservation equation, momentum conservation equation, and energy conservation equations.
The CFD software “Fluent v6.3” that solves the Reynolds-Averaged Navier-Stokes equations with finite volume scheme was used for the following numerical simulations in this paper, and the numerical results were analyzed in the Ansys Workbench post-processing module.
Table 1 show the comparisons of three component coefficients obtained from the numerical simulations and wind tunnel tests, respectively.
CFD analysis of wind environment around a human body[J].
Numerical Wind Tunnel Technique for The Wind Resistance Analysis of Long Span Structures.Engineering Mechanics,2007,7 [5] QU Weilian, LIU Linna.CFD-based Numerical Research in the Identifying of Tr-icomponent Force Coefficient of Bridge.Jorunal of Wuhan University of Technology,2007,7 [6] Zhiwen Zhu.CFD Simulation of Wind Field at Bridge Site on Gorge Terrain.Journal of Hunan University(Natural Sciences),2001,10 [7] Haifan Xiang.

In this paper, the flow characteristic of a Servco fume cupboard will be presented as a result of computational fluid dynamics (CFD) simulation using κ-ω turbulence model.
The design features which influence the performance of a fume cupboard has been the subject of research numerically through computational fluid dynamic (CFD) simulation.
CFD simulations has been used to investigate the effect of design elements in 2-dimensional such as louvered bypass and baffles and in 3-dimensional such as outlet and obstruction in front of a fume cupboard [8, 9].
The result is obtained using CFD simulation via κ-ω turbulence model.
CFD Set-up.