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The simulation results were validated by the trials.
In the present work, a 3-D simulation model of AFM process has been developed and a medium flow through the fracture plate workpiece in the process cycle has been evaluated using CFD approach.
Media properties used in simulation work.
Simulation results on finishing of fracture plate.
[6] Wan, S., Ang, Y.J., Sato, T., Lim, G.C., “Process modeling and CFD simulation of two-way abrasive flow machining,” International Journal Advance Manufacturing Technology, vol. 71, pp. 1077-1086, 2014

The model of FDS is three-dimensional computational fluid dynamics software (CFD) based on large eddy simulation (LES), and can simulate the flow process of fire turbulent [3].
e) The simulation space is selected for the cube.
Exploratory CFD modeling of pool fire instabilities without cross-wind[J].
CFD Fire Simulation Using Mixture Fraction Combustion and Finite Vol2 ume Radiative Heat Transfer[J].
The numerical simulation research of pool fire[J].

Numerical Simulation Study on Airflow Structural Characteristics in Real Human Airways Model SUN Dong1,a, LI Fu-Sheng1,b, XU Xin-Xi1,c, LIU Ya-Jun1, TAN Shu-Lin1 1Institute of Medical Equipment, Academy of Military Medicine Sciences; National Biological Protection Engineering Center, Tianjin 300161 China axizhilang-dongdong@163.com, bfsisok@163.com, cxuxx1@sohu.com c.
Corresponding author,Tel:022-84656705; E-mail:xuxx1@sohu.com Keywords: human airways; transient airflow movement; airflow patterns; numerical simulation Abstract.
In this paper, the SST simulation was used to simulate precise flow field in human upper respiratory tract in the conditions of the low intensive respiratory patterns.
Because of this, it can be coupled with CFD code.
The former is coupled with SST turbulence model which is used to open the turbulent kinetic energy in the downstream of turning point in order to trigger the local transition; the latter is used to catch the influence of offsite turbulence intensity and also connect the empirical correlation with the transition starting standards intermittent factor transport equations. 1.3 Numerical simulation In the computing of the flow field, its boundary conditions we set are: we conduct simulation researches on transient airflow movement in model of mouth-throat under the low intensity circular breathing mode.

The Ship and Ocean Engineering Dept. of UK University of Glasgow used the CFD method and ship model testing method to make a research comparison on forces on water surface speedboat in static water [7].
In recent years, with the computer technology developing rapidly, the numerical simulation technique has also had a great development with various pieces of CFD software being more and more powerful in function and the calculation accuracy being increasingly higher.
Numerical simulation calculation results and analyses 3.1 Resistance calculation result analysis Numerical simulation calculation of hydroplane direct route motion is done on the FLUENT platform.
Fig. 5 Curves for resistance varying with speed 3.2 Flow field numerical simulation display The following is an investigation of the flow field change in the numerical simulation calculation process for hydroplane direct route motion.
The Analysis of Computational Fluid Dynamics – Principles and Applications of CFD Software [M].

Numerical Simulation and Optimization of Air Distribution in Large Space Zehang Du 1, a, Chunhua Liu 1, b and Guang Zhou2,c 1 College of Shipping and Ports Construction Engineering, Zhejiang Ocean University, ZhouShan, 316022, China 2Tianhe College of Guangdong Polytechnic Normal University, Guangzhou, 510540, China a2271354946@qq.com, bliuzi1001@163.com，czzzg2001@sina.com Keywords: Air distribution; Turbulence model; Numerical simulation; CFD; Hotel atrium Abstract.
Distribution of temperature, velocity on some typical section and the atrium space can be obtained; the result of numerical simulation can be visualized by post-processing module of FLUENT and TECPLOT software.
Numerical Simulation Physical Model The K-turbulence model, a common model in current studies, is used in the numerical simulation.
Simulation Calculations and Results Analysis Perform calculations on the above model, the results are shown in Figure.4-7: Figure.4.
CFD numerical simulation of air distribution and analysis of thermal comfortablity on delaminated air-conditioning system in a large space building.

E-mail: chunmei.wang@hotmail.com Keywords: PCI, Dual-Fuel, Numerical simulation.
Numerical Calculation The simulation was performed by using 3D CFD code coupled with the CHEMKIN solver for chemistry calculations.
The RNG k-ε model was used for in-cylinder turbulence simulation.
The gasoline mass fraction is 40% in the simulation.
In the simulation, the diesel fuel injection timing was kept constant at -50 CAD ATDC.

Fig. 1 3-D model graph Fig. 2 3-D mesh graph Grid Model.The meshing of three-dimensional model is the pretreatment process of simulation analysis and the basis of the numerical simulation.The reasonable design and high quality of the grid is a prerequisite for CFD calculation[4].Grid divided after the geometric model imported into Geometry,which meshing method selected structured mesh and the grid cell selected hexahedral elements.
Simulation Analysis of the Model.According to the principle of oil discharge in the ejector—the greater the negative pressure is, the faster the speed of the oil discharge is—the effect of the discharge of oil is better.
During the simulation, the inlet velocity is 22.2m / s,the outlet pressure is 101325Pa,model iterate to 703 times, converge to 1x10-5,plot of residuals as shown in figure 3,flow field simulation results as shown in Fig.4, Fig.5, Fig.6 and Fig.7.
[2] Zhiyong Sheng,Numerical Simulation and Optimization Study of Small-sized Steam Ejector Ms D thesis.
(In Chinese) [5] Zhanzhong Han , Jing Wang Fluid engineering simulation calculation examples and applications Beijing Institute of Technology Press 2004.

In this paper, the helically coiled water pipe was simulated by CFD software.
Piazza and Ciofalo [7] predicted the pressure drop in helically coiled pipe in turbulent condition by numerical simulation.
Therefore, the CFD prediction and analysis technology were used in this paper.
Numerical Simulation Simulation object models are shown in Fig.4.
In these simulations, reel diameters range from 500mm to 2000mm with 50mm interval, Reynolds numbers range from 43040 to 172166, and Dean numbers range from 8587 to 66315.

Plenty of researches on the flow and heat transfer characteristics of rotating long orifices were carried out by both experiments and CFD simulations.
And with the accumulation of existing experience and simulation data, the mathematical model of the long orifice is developed by programming.
(2) For the consideration of complex working conditions of low Reynolds number, high Mach number and supersonic flow, massive CFD simulations were carried out to achieve a generalized empirical correlation.
Therefore this model can be widely used in one-dimensional simulation of secondary air system.
“Secondary Air System Component Modeling for Engine Performance Simulation”.

Simulation of Flows Field Characteristics in the Nozzle of Two-Phase Compulsive Circulation Flows Finishing S.
For avoiding blindness of experimental research and improving foresight of practical application, numerical simulation of flows field characteristics in the nozzle is done through computational fluid dynamics(CFD) software(Fluent, Gambit), and it provides credible theoretic basis for thorough research.
Numerical Simulation[7-11] Boundary Conditions.
Numerical Simulation.
Wang: The principle and application of CFD software (Tsinghua University Press, China 2004) [10] Z.