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Introduction The high-speed train aerodynamic problems can be studied by means of wind tunnel test, dynamic model test, numerical simulation and actual vehicle testing [1].
The method of computational fluid dynamics (CFD) numerical simulation is used to design a support form which causes least interference, providing references for high-speed train wind tunnel tests.
Fig. 1 The scheme of a train model Fig. 2 The geometry of the train model Calculation method and boundary condition settings CFD commercial software is used for the calculation of the paper.
[5] Xifeng Liang, Hongqi Tian, Jianjun Zou: The wind tunnel tests and numerical simulation of longitudinal aerodynamic force of the traction car.
[6] Fujun Wang: Computational fluid dynamics analysis---CFD software principle and application (2004), p.127

A Numerical Study on the Influence of Grooves on Heat Transfer Performance of Wet Clutch Lei Yulong 1, a, Wen Jietao1,b , Li Xingzhong1,c ,Yang Cheng1,d 1 State Key Laboratory of automotive simulation and Control, Jilin University Changchun 130022, China a leiyl@jlu.edu.cn, bwenjietao@126.com, c whdxjx123@126.com, d youngpanada@163.com Keywords: Wet Clutch, Grooves, Heat Transfer, Numerical Simulation, CFD Abstract.
(7) CFD Model and Boundary Conditions The CFD model consists of three parts: fluid, friction material and core disc, shown in Fig.2.
The CFD enable one to obtain the details of the flow characteristic inside the grooves.
[4] Natsumeda, S., and Miyoshi, T., Numerical Simulation of Engagement of Paper Based Wet Clutch Facing, ASME J.
Miyoshi, Numerical simulation of engagement of paper based wet clutch facing, ASME J.

In the last decades, the flow in T-junctions becomes a challenging test case for Computational Fluid Dynamics (CFD).
As the conclusion, the numerical simulation analysis is validated as a promising tool for design.
Veber, Experiments and Unsteady CFD-calculations of the Thermal mixing in a T-Junction, Workshop on Benchmarking of CFD Codes for Application to Nuclear Reactor Safety (CFD4NRS ), IAEA & GRS Garching, Munich, 2006
Fuchs, Turbulent flow mechanisms in mixing T-junctions by Large Eddy Simulations, I.
Angele, A CFD benchmarking exercise based on flow mixing in a T-junction, Nuclear Engineering and Design 264 (2013) 80– 88

can be implemented under the same condition, making the simulation results of rotary kiln more related to practical operation conditions.
In addition to the differences inthe file formats, the grids model used by these two software are always inconsistent.Therefore, in order to carry out the thermal stress calculation, the CFD grid should be mapped to the FEA meshes,Moreover, upon the analysis of thecombustion processandgas-solidcouplingeffect by CFD, theanalogvalue of theobtained rotary kilntemperature fieldneeds to be transformed intothecorrespondingANSYSformat.
A “*.cdb” file is generated when the kiln temperature field is outputted by CFD.
During the importation of the temperature field generated by CFD into ANSYS, it automatically takes the element type as solid185 which contains a surface effect.
(In Chinese) [7] M.S.Manju,S.Savithri, Three dimensional CFD simulation of pneumatic coal injection in a direct reduction rotary kiln.

Numerical Analysis of fluid-structure interaction of Frame structure considering the impact of turbulent wind load Sun WenBin1,a 1School of Civil Engineering and Architecture, Liaoning Technical University, FuXin 123000 CHINA alnfxswb@sina.com Keywords: fluid-solid coupling, frame structure, turbulent, numerical simulation Abstract.
According to the basic principle of CFD simulation and methods, a framework structure was studied for its vortex-induced vibration and control principle of around the flow field, it revealed the characteristics of vortex-induced vibration and rules, systematically studied frame structure fluid-solid coupling effect and the flow field active control methods and mechanism.
Along with the development of improving the theory of fluid dynamics and computational fluid dynamics (CFD) method, which make it possible, that application of CFD method making use of computer simulation of fluid-structure coupled vibration.
Numerical Method and Implementation In the numerical simulation of wind engineering, When using the simplified method - the Reynolds-averaged model approach，Turbulence model plays a very important role in the method.
Ningbo. (2004) ,p456-462 [4] Assmoah.F: Discrete Wavelet Analysis of Signal [J], International Journal of Engineering Education. (1999), 36 :255-264 [5] Houchuan Liang, Yong-Lin Zhang: STATIONARY Numerical Simulation of random processes [J].

The Influence of Micro-texturing Dimple on the Bearing Capacity of the Elastohydrodynamic Lubrication Based on CFD-FSI Fluid-solid Coupling Jiang Liu1, a, Huixia Liu1, b, Jian Li1, Shilin Feng1, Tianyu Wang1, Xiao Wang1, c 1School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China aliujiang1163@163.com, blhx@ujs.edu.cn, cwx@ujs.edu.cn Keywords: EHL, CFD-FSI, Smooth surface, Micro-texturing dimple surface, The equivalent elastohydrodynamic lubrication model, The minimum film thickness, Numerical analysis Abstract.
Until the appearance of CFD-FSI based on fluid-solid coupling method, it makes the use of this method to solve the elastohydrodynamic lubrication problem possible.
From 2010 to 2013, Dai [5] and Kong [6] analyzed the smooth surface water lubricated bearings based on the CFD-FSI fluid-solid coupled method, and the result meets their expectations.
The commercial software FSI module in ADINA can put all the functions of ADINA-CFD and ADINA-Structure together, and realize the coupling analysis of the fluid and the structure [7].
Dai: Research on Fluid-structure Interaction Simulation and Structure Optimization of Mater-lubricated Stern Tube Bearings.

In this study, simulation analysis to the automotive air conditioning absorption cold source, the vehicle speed and nozzles are proceeding.
In this study, CFD simulation for automotive air conditioning absorption cold source simulation is carried out, and the contrast of flow field and concentration distribution in packing-absorber with non-packing absorber lays the foundation for the key technical issues and its practical application of absorption cold source for automotives.
Simulation Model.
AutoCAD software and some CFD pre-processing software are used to draw the model and grids of the two-dimensional flow field of inner absorber.
In CFD software, unsteady-state, the implicit pressure-based solver, and k-epsilon turbulence model using two-equation model were adopted.

The CFD results allow a better understanding of flow behaviour leading to the design of more efficient devices.
Comparison of the CFD results with previously obtained experimental data shows a satisfactory agreement.
The aim of our study is to develop a computational fluid dynamics (CFD) model of an HME device (Fig 1).
Computer-based simulations provide a better understanding of flow behaviour leading to the design of more efficient devices.
The CFD Model Our CFD model simulates the flow, heat and moisture transport inside the HME.

This paper used an established three-dimensional model of an engine water jacket to study, and used UDF function in the two-phase flow of the CFD, describe the mathematical model and simulation the engine at different operating conditions, and get the water jacket flow rate transfer thermal process.
Using CFD method for engine cooling water jacket flow and heat transfer, the temperature, flow velocity, vapor volume fraction, etc. can be determined anywhere on the flow, and used to guide the design and improvement of the cooling water jacket.
Hull test fluid in a simple rectangular channel boiling and simulation engine boiling critical heat flux by numerical simulation and experimental, and verify the feasibility of the numerical simulation by the test results [1].
The simulation results match with the experimental results prove that the use of CFD analysis of engine cooling water jacket is feasible [2]. 
(2) In order to make the calculation more accurate when the liquid in the CFD calculation of phase change, UDF function was used

Accuracy comparison with CFD simulation.
Fig. 6 CFD analysis model and calculation example The simulation shows same conditions to experiment.
The Fig. 6(a) shows grid configuration and other conditions, and Fig. 6(b) shows one of the examples of simulation result.
The effectiveness of proposed CFD estimated method also can be demonstrated.
(3) From the simulation results of CFD based on porous material element, it can be confirmed that the results are very close to the experimental results.