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A thorough assessment of performance was made possible by using rapid-prototype models and numerical simulation and the intake port steady flow.
In this paper, use of AVL Fire, unite the modern method of numerical simulation and the intake port steady flow, in a new diesel intake port example, carry out forecast design.
Flow coefficient is a very important parameter, because of its veracity , the design basis of the no swirl vertical intake port, three-dimensional model, CFD model, mathematics model and the project of the intake port steady flow, the simulate results are fund very closed with experimental results. we can prove the feasibility of the forecast design of diesel engine intake port based on numerical simulation.
Further analysis of other flow parameters also be got, and provide a reliable basis for simulation.
Figure 3: Directed port CFD-model Figure 4: Measured v Computed Flow coefficient The DoE results were analyzed using multiple regression to determine the most significant parameters and interactions.

Numerical simulation of flow field inside the cyclone separator has rarely been involved.
Therefore, numeral simulation of flow field inside the cyclone separator used in small-sized VRF system is necessary.
Further study of the simulation result shows that the pressure loss of S is smaller than B.
[3] Hua Zhou, Application of CFD in the modification of an oil-gas separator design, Hydrodynamics investigation and development, 2004, A(19): 926-929
[4] Guo Jiang, Application of CFD technique in design and selection of oil and gas separator.

Gasoline numerical simulation of the work of research[J].
The engine intake valve at the gas flow simulation[J].
CFD technology in internal combustion engines Design[J].
Numerical simulation of cylinder internal combustion engines Research and Development[J].
Cylinder direct injection gasoline engine three-dimensional numerical simulation of working process[J].

The dynamics of different relief valves have been studied through bond-graph simulation technique in ref. [2, 3].
Therefore, this paper is to study the internal flow field of explosion relief valve by virtue of CFD software.
Numerical simulation was performed by software FLUENT combining homogeneous design method.
Karmakar: Simulation Modeling Practice and Theory Vol. 10 (2002), p. 51-67 [3] K.
Watton: Simulation Modelling Practice and Theory Vol. 13 (2005), p. 21–38 [4] X.D.

,Ltd Guangdong foshan 528300 China ahemc2011@126.com, bchenbingbing@ictsd.com.cn, cnhzcl@163.com,dzhangliangliang@ictsd.com.cn Keywords: heat pipe; simulation; icepak software; thermal design.
In order to solve the heat dissipation problem, two kinds of heat pipe heat dissipation schemes are designed, CFD software ICEPAK is used in the report to make a numerical simulation as well as a simulation analysis of the Heat pipe cooling scheme.
As the temperature increases, the failure rate of electronic equipment shows the trend of exponential growth [3], the adoption of thermal analysis software for proceeding the numerical simulation could greatly reduce design time and improve design efficiency [4].According to the thermal condition of stated conditional simulation objects, thermal analysis software uses the results of the simulation to guide product design.
Cabinet is the physical boundary for the simulation calculation, and the size of cabinet directly affects the Rayleigh number and Reynolds number given by the system.
[4]J.H.Xiang, C.L.Zhang and F.Jiang:Thermal Columnar Structure Convective Heat Transfer Process Simulation and Optimization Research [J].

Simulation method Numerical simulation method includes the following types: direct numerical simulation, Reynolds averaging method and large eddy simulation[1].
The direct numerical simulation and large eddy simulation can obtain more information than Reynolds averaging method. 2.
Direct numerical simulation and experiment This paper uses a twelve stage finite difference method for the calculation of direct numerical simulation.
Numerical simulation results and experimental analysis As an example Reynolds number equal to 2200 get a direct numerical simulation and experimental analysis, the simulation results and experimental results are compared 3.1.
[4].Li Xinliang, Ma Yanwen， Fu Dexun, CFD J. 2000， Vol.8， No.4， 536-543 [5].

arodrigues.iran@hotmail.com, bamico@ufrgs.br, cjasouza@furg.br, bgilson@dem.ufcg.edu.br Keywords: RTM, flow simulation, linear injection, pressure, granulometry Abstract.
The non-dedicated commercial software commonly used to study CFD (Computational Fluid Dynamics) are Ansys CFX® and FLUENT, both from ANSYS, and Abaqus CFD from Simula Abaqus, which are simulation tools for fluid mechanics and heat transfer problems, capable of working with complex geometries and simulate the resin’s advancement and curing within the mold.
In all simulations it was assumed an incompressible fluid flow through a porous medium.
To validate the simulation obtained with PAM-RTM, the results of the flow front position were compared with experimental data, as shown in Figs. 3, 4 and 5.
t=21 s Xff=0,059 m Figure 2 - PAM-RTM simulation for the front flow in the case 10% CaCO3 and granulometry38µm at different times.

The simulation model shows a good agreement with experimental results.
The simulation analysis of 4H-SiC epitaxial growth is performed using commercially available CFD-ACE+ software and its add-on software CVDSim SiC Edition.
It confirms the accuracy of the simulation model.
experiment 1000 rpm simulation 1000 rpm simulation 50 rpm Slope 0.5 Growth rate µ P1/2 Fig. 3 Relation between epitaxial growth rate and reactor pressure.
simulation 1000 rpm simulation 50 rpm experiment 50 rpm experiment 1000 rpm Fig. 4 Distribution of epitaxial growth rate in a radial direction for a 150 mm diameter wafer.

In these simulations, Finite Element Method (FEM) analysis is used to investigate in detail the mechanical and thermal stresses in different parts of the damper [5].
Fig. 4 Silencer damaged by intense shooting e.g. combat action Fig. 5 Silencer after intensive training ammunition 5.56 x 45NATO Marginal Conditions For simulation purposes, we define a dynamic waveform of increasing pressure and then decreasing pressure as a function of unit time Fig. 6, representing the entire course of action of the projectile ejection from the chamber to leaving the silencer to the subsequent loss of pressure [9].
Tab. 2 Muzzle pressure pre .223 Rem/5.56NATO Parameters Parameter value Overall barrel length [mm] / [inch] 368 / 14.5 Weight and type of bullet FMJ [g] / [gr] 3.56 / 55 Lenght trajectory in barell [mm] 323 Powder type D073.4 Weight powder [g] / [gr] 1.65 / 25.5 Energy of the powder charge [J/kg] 341 600 Density of powder [kg.m-3] 1 540 Maximal pressure [bar] 2 400 Muzzle energy bullet [J] 1 123 Muzzle velocity [m.s-1] 793 Bullet exit time of barell [m s] 0.085 Muzzle pressure [bar] 986 Specific volume of gases [dm3] 1.4 Dust gas discharge rate [m/s] 802 CFD simulation suppressors The primary subject of the CFD simulation is the model design of the damper Variant A Fig. 8 body consisting of a variable chamber system.
CAD models designed for simulation were created in the Solidworks environment.
The course of the simulation in the time range from 0 s to 0.1 s, based on the calculation from the previous chapter, the projectile leaves the barrel in 0.085 s.

This research used CFD softwares to simulate the downforce generated with the airfoil set to different height, and also analyzed the difference on the downforce when the airfoil is set on the racing car.
Numerical Simulation Turbulence Model.
Simulation Model.
The results of numerical simulation and wind tunnel test were qualitatively the same in overall trend.
The analysis provided not only references for the accuracy of improving simulation result, but also important data to support for whole car dynamics simulation.