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CFD technique is often employed to simulate and optimize air duct design, but the corresponding experiment validation in metro vehicle is rare.
CFD technique is often employed to simulate and optimize air duct design, but the corresponding experiment validation in metro vehicle is rare.
But, the reliability of simulation results need to test to verify.
For above phenomenon, simulation result agrees with test result.
Comparison on the Simulation and Test Value of Air Volume.

Some previous studies have compared modeling methods and simulation in case studies, for example study of chlorine releases from water treatment works model and physical modeling) [7] or CFD modeling of toxic gas dispersion in the vicinity of complex buildings, structures, and topography (comparison of FLACS model with 2D models) [8].
Therefore these conditions should be explored by physical model experiments and CFD modeling.
A method to identify and quantitatively evaluate such uncertainties would be to carry out a comparative study of CFD models of the same scenario.
Because CFD modeling is expensive and time-consuming approach, the results of the assessments which have been reported above can serve as a basis for preparing such simulations.
Therefore the predictions from common software packages as ALOHA, EFFECTS, should be completed with CFD models.

The Optimization of Group Panel-type Radiator of Transformer Yiming Liang 1, a, Ming Ao 2, b, Daming Zhu 1, Qiming Zhao1, Xiaofeng Cao 3, c and Zhipeng Jiang 3, d 1State Grid Jilin Electric Power Company limited, Changchun 130021, China 2State Grid Jilin Province Electric Power Research Institute, Changchun 130021, China 3Department of Thermal Energy Engineering, Jilin University, Changchun 130025, China a64403549@qq.com, baoming1295j@126.com, c928095835@qq.com, d1064151530@qq.com Keywords: panel-type Radiator, Numerical Simulation, Transformer.
The author used CFD software to simulate when group panel-type radiator quantity, space, height of gooseneck have changed, how temperature distribute on the radiator.
Summery In this paper, through simulation the influence on the heat transfers efficiency when changed the group panel-type radiator quantity and space have been studied.
Guo, Flow Distribution and Cooling Capacity for each Channel of Panel-type Radiator CFD Analysis [J],Transformers, Vol.48(2011), No. 3,p.1 [3] Y.
Zhao, Numerical Simulation of Temperature Field on Oiland Air Cooled [J],Transformer, Vol .40 (2003)No. 5, p.5

Research on the Generation of Two-dimensional Fitted-body Grid by Adjacent Boundary Nodes Sliding Method Zhanrong Feng*1, a, Lixia Wang2,b and Junhua Cui3,c National Defense Key Discipline Laboratory of Light Alloy Processing Science and Technology, School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang, Jiangxi, 330063, P.R.China afengzhanrong@hotmail.com, bwlxqwert@hotmail.com, ccjhllh@163.com Keywords: CFD; body-fitted grid; orthogonal property; Adjacent Boundary Nodes Sliding Method Abstract.
A solid base is provided for the subsequent Computational Fluid Dynamics (CFD) calculation.
Introduction The generation of grids plays a major role in Computational Fluid Dynamics (CFD) calculation and fluid-particle modeling.
A solid base is provided for the subsequent Computational Fluid Dynamics (CFD) calculation.
A method to generate body-fitted grids orthogonally and the numerical simulation of two-D flow fields[J].

Analysis on Effects of the Blade Wrap Angle and Outlet Angle on the Performance of the Low-specific Speed Centrifugal Pump Wei Li a, Weidong Shi b, Ting Jiang c, Yan Xu d, Tongtong Li e Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Jiangsu 212013, China alwjiangda@ujs.edu.cn, bwdshi@ujs.edu.cn, cjiangtingdz@126.com, dxuyan15694@163.com, dlitongtong2010@126.com Key words: Centrifugal pump, Blade Wrap angle, Blade outlet Angle, CFD Abstract.
Numerical simulation of the internal flow within the centrifugal pump with the specific speed of 60 at different blade wrap angle and outlet angle is carried out.
This paper is based on the study of the efficient non-overload Submersible Sewage Pump, combined with the traditional hydraulic design and CFD simulation analysis on the flow field [5-7], using the commercial software FLUENT to simulate the flow field and predicting performance of the centrifugal pump with the specific speed of 60 in different blade outlet angle and wrapping angle.
is the flow-head curve, is the flow-power curve, is the flow-efficiency curve Fig.4 External characteristics prediction with different outlet angle is the flow-head curve, is the flow-power curve, is the flow-efficiency curve Fig.5 External characteristics prediction with different wrap angle Conclusions In this paper, numerical simulation of internal flow field and performance prediction of six design methods of submersible sewage pump have been obtained by selecting the amended k-ε two-equation turbulence model using the commercial CFD software Fluent , the results show that: (1) Under the constant wrap angle, the outlet angle and the impeller wake zone is small, the hydraulic performance is relatively good; under the constant outlet angle, that appropriately increase the wrap angle can reduce the solid particles on the impact of the blade outlet, reduce wear and improve the overall efficiency of the pump.

At present, in the study of blood pump rotor system,Zhang Baoning applying CFD for artificial blood pump flow field numerical simulation .It is concluded that the fluid flow in the blood pump is very complex,it also puts forward relevant improvements on the blood pump.Gao Dianrong use Three-dimensional numerical simulation and analysis for the Conical spiral axial flow blood pump.
Simulation experiment indicates that the Conical taper screw rotation speed and axial blood pump should not be too big.Otherwise it will make the flow field become disorder.Yun zhong give the simulation for the impeller and velocity, pressure, stress distribution of the micro axial blood pump rotor system of blood flow which designed by themselves.And put forward the corresponding improvements to its structure.
Mini hemoreliable axial flow LVAD with magnetic bearings: part 2,design description [J].ASAIO Journal,(2002),48(1):p.98-100 [5] Zhang BaoNing ,Zhang YangJun,Wu Yulin,Application the CFD in artificial blood pump flow field for numerical simulation.
[J]Chinesejournal of biomedical engineering,(2002),21(1):p.41-45 [6] Gao DianRong,Wang GuanYi The Three-dimensional numerical simulation and analysis for the fluency of the conical spiral blood pump,[J],Journal of mechanical engineering,(2007),43(9):p.47-50
[7] YunZhong,Tan JianPing,Gong ZhongLiang, the simulation and optimization research about the CFD of the axial blood pump impeller structure.

Zhou Li and Xi Guang studied the numerical and analysis of wind speed distribution under high-rise building using CFD software.
Our research team studied the wind speed simulation around Shanghai University.
From the picture it shows that this simulation result has good convergence and fidelity.
The wind speed simulation result is analyzed in the following aspects: 1.
[4] LI Pengfei, XU Mingyi, WANG Fei-fei: FLUENT GAMBIT ICEM CFD Tecplot.

The study shows that using FLUENT simulation results to predict performance of hub cutter is feasible.
Over the past few years, with the rapid development of the computer technology, Computational Fluid Dynamics (CFD) has been developed to becoming popular software to analyze the operation of devices under the water both in home and abroad.
Nowadays, common used CFD applications are FLUENT, PHOENICS, FIDAP, CFX.
Fig.5 Turbo report Conclusion We have proposed a fluid model for numerical simulation of aquatics hub cutter with a realizable RNG turbulence mode1 in FLUENT software.
CFD can help to predict the pressure on the surface of aquatics hub cutter.

China 2State Key Laboratory of Automotive Dynamic Simulation, Jilin University, Changchun, Jilin Province 130022, P.R.
At present, with widely use of computer technology and computational fluid dynamics (CFD), numerical computation based on CFD can be applied in engineering practice.
So, Numerical simulation method is adopted in calculation of flow field and performance of designed flat hydrodynamic torque converter before and after its blades being leaned.
While CFD is used in calculating the performance of hydrodynamic torque converter, the key is to seek torques working on all impellers.
Flow pressure and speed solution can be obtained by numerical simulation of the flow filed in torque converter.

Grid Validations for Downburst Simulations Huixue Dang1, a, Fengli Yang1,b , Jingbo Yang1,c 1China Electric Power Research Institute, Beijing, China, 100055 aperpetual@mail.nwpu.edu.cn, byangfl1@epri.sgcc.com.cn, cyjb@epri.sgcc.com.cn Keywords: Downburst, Numerical Simulation, Grid Validation, Refinement, Numerical Fidelity Abstract.
For steady wind profile simulations, the impinging jet model could provide a reasonable radial velocity profile at the critical location.
Given that the flow is both steady and axisymmetric, an axisymmetric cross-section is extracted for numerical simulations.
At that radial location, CFD predicted higher radial velocity at hight greater than Z/D=0.12.
Orf, Eric Savory, Improved Modeling of Downburst Outflows for Wind Engineering, Journal of Wind Engineering and Industrial Aerodynamics. 99(2011) 801-814 [5] Jongdae Kim, Horia Hangan, Numerical Simulation of Impinging Jets with Application to Downbursts, Journal of Wind Engineering and Industrial Aerodynamics. 95(2007) 279-298 [6] M.T.Chay, F.Albermani, R.Wilson, Numerical and Analytical Simulation of Downburst Wind Loads, Journal of Wind Engineering and Industrial Aerodynamics. 28(2006) 240-254 [7] Chao Li, Q.S.Li, Y.Q.Xiao, J.P.Ou, A Revised Empirical Model and CFD Simulations for 3D Axisymmetric Steady-state Flows of Downbursts and Impinging Jets, Journal of Wind Engineering and Industrial Aerodynamics. 102(2012) 48-60 [8] Yan Zhang, Partha P.