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This study identifies that CFD is a valid tool for exactly investigating the flow and valve plate movement.
In this paper, theoretical calculation and CFD simulation are used to analyze the valve plate movement.
The numerical simulation result shows that the open and closed angle of the valve plate are 53.2° and 219.5°, and it is very close to the theoretical calculation result (56°, 220°), which proved the correctness of CFD numerical simulation for reciprocating compressor.
(3) CFD simulation of valve plate movement is very close to the theoretical calculation, which proves the correctness of CFD simulation for reciprocating compressor.
Cyklis, CFD Simulation of the Flow Through Reciprocating Compressor Self-Acting Valves[C], International Compressor Engineering Conference, 1994, pp. 427-432 [5] A.P.Peskin, The Effects of Different Property Models in a Computational Fluid Dynamics Simulation of a Reciprocating Compressor [J], International Journal of Thermophysics, 1999, Vol. 20, No. 1, pp. 175-185 [6] Pérez-Segarra,C.D.

CFD analysis of water cavity model was done by SolidWorks Flow Simulation, the problems and reasons which may be in water cavity model were pointed out.
A cylinder head with 4 cylinders was used as an example in the paper, its cooling water cavity was reverse designed and the 3D model was set up; the CFD analysis of flow field was done by using SolidWorks Flow Simulation based on 3D model.
Fig.4, The solid model of water cavity The CFD Analysis of Water Cavity The CFD analysis of water cavity is mainly used to carry out the simulation analysis of flow field in fluid mechanics.
There is a lot of software used to CFD analysis, SolidWorks Flow Simulation was used in this paper.
It is a kind of powerful software for computational fluid dynamics (CFD), and can deal with simulation for fluid flowing and heat transition, etc. quickly and easily.

However, CFD simulation produced a higher velocity in the vicinity of vortex zone when compared to experimental data.
Second-order upwind scheme (QUICK scheme, third-order MUSCL scheme) are recommended for the CFD simulation of ship airwakes with a modest increase in computational cost. y+ values from o(10) to o(1000) can all be accepted for the CFD simulation of ships(e.g., SFS1 ) with Reynolds number 108 or more.
Simulations were carried out with various spatial discretization schemes-mesh-Wind Over Deck (WOD) combinations by using commercial CFD program FLUENT.
However, velocity magnitude of CFD simulation was higher compared to experimental data.
The use of realistic geometries for use in CFD airwake simulations will, therefore, be used in future work.

CFD Simulation of Gas Fluid Flow in a Rotating Zigzag Bed Bin Jiang1,a, Yanan Zhang1,b, Luhong Zhang1,c and Rong Zhang1,d 1School of Chemical Engineering and Technology, Tianjin University,Tianjin, China abinjiang@tju.edu.cn, bzyn820109@163.com, czhanglvh@tju.edu.cn, dzhangr1988@sina.cn Keywords: HIGEE, Rotating Zigzag Bed, CFD simulation, gas flow, fluid dynamics Abstract.
This paper works with the CFD simulation of the process of RZB.
CFD simulation technology can figure out the size and orientation of 3D points of gas flow field, and the simulation results are more accurate than the concluded results of the experiment.
Conclusions This paper set up a CFD three-dimensional model to forecast the gas phase fluid flow of the RZB.
The simulation results reflects the RZB within the fluid flow.

CFD(Computational Fluid Dynamics) results of LHA ship were verified the accuracy of numerical simulation through compared with the experimental data.
Recently, with the development of more advanced CFD methods and increased computing power, numerical simulations and capabilities have dramatically improved.
The time-accurate computational simulations of an LHA ship airwake was carried out[1] and the LHA CFD simulations show good agreement with the results of wind tunnel test.
Method of CFD Method of CFD The grid in this paper was generated by ANSYS ICEM.
CFD grid generation, as the first part of the simulation process, also will be increasingly difficult.

The performance curve has been predicted, the pump’s performance also was been tested, and compared the experimental data to the CFD simulation results.
In order to verify the accuracy of CFD simulation, the self-priming pump performance test was done.
And operating points at CFD simulation results and the final test results were been put on the same coordinate system to draw Q-H, Q-P, Q-η curves, as shown in Fig. 7, Fig. 8.
The CFD simulation results are considered more accurate.
Summary (1) CFD can simulate intuitive reaction for the liquid flow inside of the self-priming pump, the simulation result and the result of the final test are relatively close

CFD is also a approximate calculation, this feature itself means it can not used to get a very exact root for torque converter real characteristic, it also need test to optimize simulation boundary[3].
(4) Model solver： Large eddy simulation is the top priority simulation solver due to its fast convergence speed and high accuracy characteristic for transient flow field[4]. 4 CFD Simulation and Test All the torque in individual wheel of torque converter is originated from circulation difference between inlet and outlet, in some curtain situation, the sum of all wheel torque will be zero
(1) It can predict based on the rule above that all the 3 wheels torque sum vector shall be zero during CFD simulation, this characteristic can be considered as a very important criterion which is used to evaluate simulation accuracy, if the torque sum vector is not zero, it mean there is calculation deviation from CFD, the smaller the deviation the more accuracy it is.
Figure 5 CFD simulation comparison with test data 5 Summary (1) The article optimized CFD simulation to hydraulic torque converter and pointed out some critical dominant factors influence to accuracy, they are grid generation quality, oil viscosity and density relationship with temperature variety, gravity, pressure drop and solver definition
(2) Based on torque converter characteristic of all wheel torque vector sum zero, this article compared CFD simulation before and after improvement with measured data, finally draw a conclusion optimized CFD simulation can get a much closer accuracy to practical one effectively.

The study involves developing a 2D CFD model of diffuser, acquiring simulation results and comparison with experimental results.
The mesh is generated in ICEM followed by simulation in CFX.
The paper presents CFD simulation of 2D model of diffuser simulating the velocity profile along the center line of the model.
Norimasa two-way straight type model without flange, without brim, is selected for CFD simulation in this study.
CFD simulation of 2D model of diffuser is carried out.

Study on Influence of Geometric Parameters on DMFC Performance Based on Experiments and CFD Simulations Biao Yua, Han Zhaob School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei, Anhui, China 230009 ayubiao619@gmail.com, bhanzhao@mail.hf.ah.cn Keywords: Direct methanol fuel cell (DMFC), Geometric parameters, Computational fluid dynamics (CFD) Abstract.
Experimental Tests and CFD Modeling Experimental Setup.
CFD Modeling.
CFD Simulation Results and Discussions Increasing of pressure inside the DMFC can improve the performance and the reason is that the high pressure can improve the mass transfer efficiency of fuel and oxygen, and high pressure also can improve the removal of CO2 and water which are generated by the electrochemical reactions.
Conclusions In this research, experimental study and CFD simulation are employed to investigate the influence of geometric parameters on DMFC performance.

Air Flow in Large Space Building with CFD Model and Local Test Wang Jun, Wang Haixia Henan University of Technology, Zhengzhou, Henan, China, 450052 Keywords: large space building, air distribution， thermal comfort, CFD simulation, local test Abstract.
Simulation with CFD and local test are two main methods in study on air flow in large space building.
In the simulation computation, k-ε dual equation model is adopted and CFD software for AIRPAK applied.
CFD simulation research under design conditions The establishment of the model remains basically the same with that of the above stated model.
The agreement of tested data and simulation computation results testifies accuracy of applying CFD software of AIRPAK in simulation of large space buildings