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Good agreements were found between simulation and measurement.
In recent years, with the increasing of computing power and memory capacity of a computer, computational fluid dynamics (CFD) has developed into an important and useful tool for studying fluid problems [3, 4].
FLUENT is industry-leading CFD software for fluid simulation, and has been used widely in both industrial and academic applications [5, 6, 7].
A boundary condition named fan boundary was chosen as the only source of simulation.
However, the tendency of simulation and experiment at every line is very close.

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.
Solve 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.
[2] Guoqiang.Wang, “Numerical simulation and practice on ANSYS,” [M].

The finite element simulation technology The implementation of the finite element simulation test mainly includes stress analysis and fault prediction.
The main content about simulation test is shown in figure 1.
Maximum response displacement （mm） Maximum response acceleration（G） 1 0.057 5.7 2 0.045 7.2 3 0.02 7.18 4 0.196 5.1 5 0.028 6.4 6 0.0028 7.5 Thermal simulation based on Flotherm Flothem is developed by Flomerics company for CFD simulation in the field of electronic heat dissipation.
Fig.3 Device’ CFD modal in Flotherm and thermal analysis result Life prediction simulation based on Calce PWA Calce Sarah is launched by Calce laboratory at the university of Maryland as the reliability simulation software, include temperature and vibration finite element simulation and fault prediction.
Vibration simulation using MATLAB and ANSYS[M].

Then, to verify the accuracy of the numerical results, the final equation used to get the (Cp) from the averaged (Cm) determined value is: Cp=λ.Cm (5) 2.2 Numerical details and solver setup Table 1 displays the conditions and parameters used in the Computational Fluid Dynamics (CFD) simulation.
ANSYS Fluent 21 is utilized for simulations, with air as the primary fluid.
Fig. 5 shows the mesh independence test, a crucial step in verifying the precision and dependability of computational fluid dynamics (CFD) simulations.
The test verifies the accuracy of simulation results and ensures they are unaffected by the size of the mesh, confirming the reliability of numerical methods and the produced simulation results.
Sharma, “Flow physics of a combined darrieus-savonius rotor using computational fluid dynamics (CFD),” 2012.

Also result of moment pitching (see Figure 5) are trend similar both in CFD and Mat-Lab.
For the translation forces 135 degrees (see Figure 6) trend curves are similar but RAO curve trend experiment higher then CFD and Mat-Lab.
Experimental model test and CFD analysis shown good agreement both on 90 and 135 degrees of heave.
Conf. on Ship and Shipping Research, NAV, Venice, Italy [3] Bridges, T.J, (1982), A numerical simulation of large amplitude sloshing, Proc. of the 3rd Int.
Applied Ocean Research 20, 337-355 [6] Kim, Y, (2001), Numerical simulation of sloshing flows with impact load.

CFD study on effect of the air supply velocity on contaminant transport within an road vehicle cabin Liping XIANGa, Hanqing WANGb School of Civil Engineering, Hunan University of Technology, Zhuzhou, Hunan, 412008, China aelephantxlp@163.com, bhqwang2006@yahoo.com.cn Key words: road vehicle cabin, concentration field, numerical simulation Abstract: The RNG turbulence model and species transport model were employed to simulate the dispersion of CO2 contaminant in the road vehicle cabin.
Simulation scenarios Road vehicle geometry .
In order to save calculation capacity, simulation configuration was simplified and one half of the vehicle cabin in length was considered.
Simulation modeling.
Boundary conditions in CFD simulations.

Indoor thermal environment, along with human response, was studied by means of CFD.
In this work, the performance of a radiant floor heating system was analyzing using CFD method of convection and radiation.
Simulation Model Physical Model.
The office space used in the CFD is 6.4m in length, 5m in width and 3m in height.
In order to well analyze the temperature field, the indoor thermal environment of the office room is simulated by CFD.

It combines the weakly compressible water source CFD code and FEM shell element code.
Programming code and numerical algorithm We developed a "weakly compressible" CFD code under OpenFoam c++ class libraries according to formula (1), (2) and a pipe analysis finite element code in the FEAP according to formula (3).
In the CFD code, the spatial discretization was performed using a cell centered co-located finite volume method for unstructured meshes with arbitrary cell-shapes.
For the simulations presented in this paper, a second order implicit time scheme is used combined with second order linear interpolation in space, except for the convective terms.
B, 10(4): 71-89 [13]Hongming Zhang.Stuties on numerical simulation of weakly compressible coupling water hammer and cavitation in hydroturbine.

The essay designs four layout schemes, using the CFD to simulate them, respectively.
Simulation results 4.1 Temperature Analysis The temperature distribution in the vertical view of four layout schemes is shown in Fig. 2.
References [1] ZHANG Jian, WANG Shugang and ZHANG Tengfei: Numerical simulation of heat transfer between outdoor units of multi-connected split air conditioning systems and ambience [J].
HV&AC, 2010, 40(11):104-107 [2] Multi-splits air-conditioning system. http://baike.so.com/doc/4460188.html [3] WANG Fei, XIAO Yongquan: Simulation and evaluation of building cluster’s wind environment with PHOENICS soft ware [J].
HV&AC, 2008, 38(1): 7-10 [5] LI Meixia, WANG Qiwen: The applications of numerical simulation in natural ventilation design [C].

As the development of Computational Fluid Dynamics (CFD), many researches on numerical simulation of muzzle flow field appear at home an abroad.
Besides the dynamic mesh technique there is another method to deal with moving body in CFD called chimera method.
At the beginning of simulation, the projectile axial velocity is 713m/s.
Numerical simulation of complex unsteady muzzle flow field [D].
Numerical simulation of bullet accelerating process at after-effect period [J].