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The interactive orthogonal design was employed to investigate the aerodynamic drag coefficient (CD) of hatchback car by using CFD methods.
Numerical simulation Geometry and mesh.
The Realizable k-ε model introduced the contents of the rotation and curvature, and can be effectively applied in the simulation of the outflow of a car.
Tabel 2 Interactive orthogonal experiment No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Factor A B AB C AC EF D AD BD F E BE By using CFD method, the results of each condition were placed in table 3.
ChangChun: JiLin University, 2005 [4] Wang Fujun: The computational fluid dynamics analysis——CFD Software Principles and Applications (University Press, China 2004) [5] Yu Hao, Zhu Hui, Yang Zhigang: 2012 ICISCE, Vol.1(2012), p.229 [6] Ren Luquan: Optimum Design and Analysis of Experiments (Higher Education Press, China 2003) [7] Li B.Acta Aeronautica et Astronautica Sinica, 2012, 33(2):375-380

The optimum design of the different passageways is then verified using CFD-ACE+ numerical software.
Therefore, this study uses mold core designs for different passageways to verify the optimal design using CFD-ACE+ numerical software.
Figure 5 shows simulation results for velocities and strain rates of the abrasive medium.
Figure 6 shows simulation results for velocities and strain rates of the abrasive medium.
First, CFD-ACE+ numerical software is an effective and precise simulation tool for demonstrating the optimum design of a six helices passageway.

Li [13] made a comparison between different models of simulation approach near the wall (for LES, Large Eddy Simulation) for moderate Reynolds numbers (Re = 5000) and the DNS methods.
The last section denotes a summary of the results of the simulations and the conclusions drawn.
In this study, the numerical simulations were processed using thecommercial codes CFD ANSYS CFX based on the Finite Volume Method to solve the Navier Stocks equations.
In this case, we opted for this model for all simulations.
Yang, A CFD study of twin impinging jets in a cross-flow, The Open Numerical Methods Journal 4 (2012) 24-34

As Cartesian grid can extend through the surfaces of geometry which incidentally produces irregular cut cells, accurate imposition of the solid wall boundary condition is essential for its success in CFD.
The GBCM approach and conventional symmetry technique (ST) approach are compared to validate its accuracy in the flow simulations with complex geometric configurations.
It is pointed out that solution-based adaptively refined grid generation approach should be a fundamental technique for a flexible and reliable CFD simulation [11], according to the numerical simulation experiences by Boeing’s TRANAIR software.
Initial coarse grid has 16×16 cells, firstly cut cell adaptions and curvature cell adaptions are applied, and then numerical simulation is carried out on the previous grid.
Conclusions Least-squares fitting has been employed for interpolating reflect point to prevent ambiguity of stencil points, and GBCM approach has been successfully extended to the adaptively refined Cartesian grid in CFD.

The numerical simulation method is used to calculate the flow field of the axial fan.
The numerical simulation results Fig 11.
The experimental results and numerical simulation results are basically the same. 5.
The numerical simulation and the experimental tests are done to verify the new fan cowl model.
(3) The CFD can be used to observe the distribution of flow field of the duct system and check the matching between different components.

A three dimensional computational simulation was done using unsteady green-gauss cell based solver for adopting the combustion simulation.
The performance of single phase detonation engine using divergent nozzle at the exit section of detonation tube was studied using CFD [6].
The theory and numerical simulation of deflagration flame acceleration in an obstacles channel was studied by Damir Valiev et. al.
The simulation predictions show that turbulence production increases with increasing obstacle BR [16].
The hydrogen and air initial inlet temperature are 298 K and 1242 K and Mach number are 1.45 and 1.12 for computational simulation.

The tetra mesh of the computational has been done with the ICEM CFD.
Summary In this work, CFD simulation has been done using commerial available software Fluent(C) to solve the Reynolds Average Navier Stoke equation for turbulent flow in a non inertial rotating reference frame.
The grid sensitivity study has been done along with comparison to the experimantal available data, with this confident CFD simulation has been proceded with our geomentry.
Accurate numerical simulation of a high solidity Wells turbine.
Detailed CFD analysis of the steady flow in a Wells turbine under incipient and deep stall conditions.

Aiming at the lack of research for key parameters of the cage-type trim of sleeve-type steam trap, the numerical simulation calculation was carried out for the cavitation flow in valve, the influences of orifice types, orifice diameter, guide sleeve types on cavitation were researched.
Aiming at the cavitation problem and urgent localization need of ultra-supercritical steam trap, the CFD method was introduced [2-3].
Numerical Simulation Calculation Geometry Model and Mesh Generation.
Mesh model is generated by ICEM-CFD software, the body-fitted grid of flow area in trap is genetated by tetrahedral/hybrid mesh.
Fig.9 is the simulation result of the steam trap of double orifices type when the saturated vapor pressure is 4.8 MPa.

This paper tries to simulate a numerical wave tank by FLUENT CFD software using k-ω turbulence model in a two-dimensional domain.
The simulations show that the amplitude of the transient wave decreases while the relative breadth increases.
Here, the numerical wave tank is simulated by FLUENT CFD software in a two-dimensional domain.
The simulations show that the amplitude of transition wave decreases with the relative length increase.
Then this time step is chosen for next numerical wave tank simulation.

Many researchers have used computational fluid dynamics (CFD) software to solve problems which can not be solved theoretically and experimentally, for example, the simulation for the flow velocity field inside and outside the AWJ nozzle has been carried out [2].
This study aims to obtain the flow field of the AWJ by simulation methods in help of CFD software-FLUENT 6.0, the velocity field of the AWJ is also obtained.
Simulation Equation The multi-phase Euler model is used as the simulation equation [8].
Simulation Model and Result The simulation model is built by the dimension and shape of the AWJ nozzle in experiment.
Comparing with the simulation result, the Fig.6 is obtained, it indicates that the experiment value and simulation value change similarly, both value are almost the same, which proves that the simulation method is successful, the simulation model and boundary conditions are right.