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Thus the simulation model can be used to simulate and optimize valve timing parameters of this diesel engine.
Numerical Simulation and Analysis of Influence of Valve Timing on Diesel Engine Performance[J].
Optimization of Valve Timing for Diesel Engine by CFD[J].Chinese Internal Combustion Engine,2002,23(5):34-37
A CFD Approach for　Studying Valve Timing of IC Engines.
Analyzing Emission of a Turbo-Charged DI Diesel Engine with Different Advanced Injection Angle based on CFD Method.

Computational Fluid Dynamics (CFD) is used for the investigation of the piston wind.
The simulation results are trustworthy and numerical simulation of piston wind is feasible using dynamic grid in CFD software, which provides the basis for the virtual design of piston wind.
On the calculation method of piston wind, a one-dimensional subway environment simulation software SES (Subway Environment Simulation) software, which was developed by the U.S.
In addition, some other commercial CFD software, for instance, Kim and other authors carry out an analysis of the piston wind caused by subway train’s acceleration and deceleration movement in a tunnel by using CFX4.
Numerical Simulation of Compressible Flows Induced by a Train Moving Into a Tunnel.

Aerodynamic Analysis of Pickup Truck Xiaoni Qia, Jian Mengb and Yongqi Liuc School of Vehicle and Transportation, Shandong University of Technology, Zhangzhou Road 12, Zibo 255049, China abmjw@163.com, bmengjian@163.com, cyqliu@sdut.edu.cn Keywords: Pickup Truck; Aerodynamic Characteristics; Numerical Simulation; Computational Fluid Dynamic(CFD); Drag Coefficient Abstract.
The CFD software FLUENT was used to simulate flow field around a pickup truck in this paper.
Numerical simulation was taken on a 1/5th pickup truck model.
Numerical simulations on a pickup truck Mathematical model.
References [1]Al-Gami A M，Bernal L P，Khalighi B．Experimental Investigation of the Near Wake of a Pick-up Truck[C]．SAE paper 2003-01-0651 [2]Lokhande B，Sovani S，Khalighi B．Transient Simulation of the Flow Field Around a Generic Pickup Truck[C]．SAE paper 2003-01-1313 [3]Zhigang Yang，Bahram Khalighi．CFD Simulations for Flow Over Pickup Trucks[C]．SAE paper 2005-01-0547 [4]Abdullah M.Al-Garni，Luis P.Bernal，Bahram Khalighi．Experimental Investigation of the Flow Around a Generic SUV[C]．SAE paper 2004-01-0228 [5] M.

CFD STUDIES ON VELOCITY DISTRIBUTION OF AIR IN A SWIRLING FLUIDIZED BED Mohd Faizal1,2a*, Suzairin Md Seri1,2b, Mohd Al-Hafiz1 & Vijay R.
Methodology Investigation of the air flow distribution in a SFB was conducted using commercial CFD software – FLUENT 6.3.
Fig. 2 SFB actual system and computation domain in CFD Periodic Boundry.
Simulation of a SFB on actual scale will result high computation time.
Result and Discussion Computational time for the whole simulations took 15.17 hours.

The topology of these structures is challenging to investigate using Computational Fluid Dynamics (CFD) [4-5].
Therefore, in this paper, the flow characteristics of the directional control valve are obtained by CFD simulation.
Numerical Analysis and CFD Modeling For solving the transient flow through the valve, the computational fluid dynamics (CFD) analysis is employed.
In order to obtain the steady/transient flow characteristic of the valve, the simulations were performed using the commercial software SolidWorks 2013 with Flow Simulation.
Rajda, CFD analysis of pressure loss during flow by hydraulic directional control valve constructed from logic valve, Energ.

The intake process will be simulated using CFD analysis.
The piston displacement will be considered ideal for the CFD simulation.
A cross-sectional view of the compressor and the simplified geometry used in the flow simulation can be seen in Figure 1.
A cross-section through the simplified 3D-model of the compressor – left; equivalent geometry used in the fluid flow simulation – right.
Conclusion The CFD study confirms the functionality of a resonant compressor using CO2 as a working fluid.

CFD-based models.
Bastier et al [[27]] obtained the temperature distribution and plastic strain from a CFD based material flow steady state simulation results.
Colegrave et al [[28]] established a 2D planar steady state CFD model.
Atharifar et al [[32]] investigated the loads carried by a threaded FSW tool by using a CFD based steady state simulation model.
Dynamic mesh is employed in the numerical simulation in the CFD based numerical simulation to handle the motion of the FSW tool as shown in Fig. 2, the calculation domain is meshed using the tetragonal grid.

Numerical Simulation of Campus Wind Environment Liu Richao1,a,Tang Zhonghua2,b,Qi Weiyang3,c 1,2,3Southwest University of Science and Technology , Mianyang .China a,b,cqtliujc2008@yahoo.com.cn Key words: Natural Ventilation, Wind Environment, Simulation Abstract: This paper adopted computational fluid dynamics (CFD) method, used k-ε RNG turbulence model-closed control differential equations for numerical simulation.
Computer numerical simulation Computer simulation is numerical solution of dynamic equation of the wind flow around the building following by computer (often called the computational fluid dynamics CFD:computational fluid dynamics),which simulates the wind environment.
Of course, the biggest shortcoming of numerical simulation is reliability- the credibility of simulation results.
Analysis of simulation results 4.1.
,Kim,S.CFD analysis of wind climate from human scale to urban scale.J.Wind Eng.Ind.Aerodyn.1999,81:57-81

China, 250061 aanyantao@163.com, b meywang@sdu.edu.cn, cwjg_mrn@sina.cn Keywords: control valve; blocking fault; Flow Field; CFD Abstract.
Establish interior flow field model of the control valves under the blocking fault, using the CFD simulation and analysis the internal flow field of the control valve under the blocking and the trouble-free.
These conclusions show that the simulation results can be more accurate and reliable.
Opening 40 Flow Field Simulations When the relative openings is 40%, given a set of differential pressure 100kPa, 200kPa, 300kPa, 400kPa, 500kPa, 600kPa, 700kPa, 800kPa, 900kPa, 1000kPa, numerical simulation and obtain the flow value of trouble-free and the blocking, which is shown in Fig.15.
Fig. 15 Differential pressure –flow Fig.16 Differential pressure-the relative flow Conclusions Establish interior flow field model of the control valves under the blocking fault, using the CFD simulation and analysis the internal flow field of the control valve under the blocking and the trouble-free.

The paper studies on the variation of the gas flow pressure and velocity through the converter by the computational fluid dynamics (CFD) methods.
There are many CFD commercial software such as PHOENICS, CFX, STAR-CD, FIDIP and FLUENT, etc..
The pressure simulation results and analysis.
Conclusion This paper studies the gas flow pressure and velocity characteristics of the porous material by CFD method.  
Song CFD simulation of the effect of upstream flow distribution on the light-off performance of a catalytic converter Energy Convers.