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The interaction between abrasive waterjet and target is studied by computational fluid dynamics (CFD) and finite element method (FEM).
The flow field inside and outside abrasive waterjet (AWJ) nozzle is obtained by CFD software.
The realized k-ε model is chosen in this simulation work.
When the iteration is converged, the simulation results are obtained.
Simulation Results and Analyses The simulation of Figure 2 is the flow field inside and outside the AWJ nozzle.

Fig.4 The coordinate of the deviation (two dimensional) CFD Simulation And The Simulation Experiment Results.
Thus CFD simulations are carried out to conduct the experiment.
But in CFD simulation the velocity field of the section (beginning of the outlet orifice) is available.
One model simulation takes 3 hours.
The spraying experiments coincident with the CFD simulations.

Analysis and Simulation of a New Integrated Printing and Drying Machine YUAN Juntao1, a, WEI Ruiyuan1, b 1School of Mechatronics, Soochow University, Suzhou 215021, China ayuanjuntao@gmail.com, bruiyuanwei@gmail.com Keywords: Drying; ABS; CFD Abstract: This paper has a research on a novel integrated printing and drying machine.
The drying machine is also introduced and the drying process is simulated by CFD software.
Simulation and Analysis.
It’s a kind of widely used CFD software.
So the simulation model is proved right, and the simulation result is effective.

A Simulation Research on the Noise and Flow of Vehicle Cooling Fans Zhao Cheng Yuan1,a, Fu Quan Zhao2,b, Hai Bo Chen1,c, and Jia Yi Ma1,d 1State Key Laboratory of Automobile Dynamic Simulation of Jilin University, Jilin, P.R. of China 2Geely Automobile Research Institute Co, Ltd, Zhejiang, P.R. of China ayuanzc0528@126.com, bzhaofq@geely.com, ckeelychenhb@163.com, dyijiama@126.com Keywords: CFD Model, Axial Cooling Fan, Aerodynamic Noise, Air Flow.
The numerical simulation results were found to agree well with the experimental data.
Numerical Simulation Model The CFD models provide unique approaches being able to precisely simulate the detailed effect of numerous design parameters on the performance and noise of the cooling fans without the involvement of the design, fabrication of a prototype.
M．Henner，S.Kessaci and S.Moreau, “Latest Improvements of CFD Model of Engine Cooling Axial Fan Systems,” SAE Paper 2002-01-1205
Moreau, “Detail CFD Modeling of Engine Cooling Fan Systems Airflow,” SAE Paper 2003-01-0615.

Results of the mixture simulation is compared with the results obtain from simulation of pure H2 release.
CFD tools have the potential to model the relevant physics and predict the effect of certain incident [9].
Hence, CFD-FLUENT is used in the present study for the simulation and standard k-ε turbulence model with the aid of species transport model [10] is applied.
Simulation of the escaped gas is carried out with CFD code FLUENT.
Velocity magnitude of syngas mixture Results of the simulation for mixture are compared with the pure release simulation.

China axdwang@mail.neu.edu.cn, b120040622@163.com, cwangtian6809@163.com Keywords: butterfly valve; large diameter; flow characteristics; CFD simulations Abstract.
A numerical approach was used to investigate the flow characteristics around a butterfly valve with the diameter of 2108 mm by the commercial computational fluid dynamics (CFD) code FLUENT6.3.
The simulation was carried out to predict flow field structure, flow resistance coefficient, hydrodynamics torque and so on, when the large diameter butterfly valve operated at various opening degrees.
Fig.1 geometric structure of butterfly valve The experimental study to the flow characteristics around a butterfly valve has been more and more difficult with the diameter of butterfly valve increasing, and the Computational fluid dynamics (CFD) is a good choice as a research tool to investigate and predict complicated flow and heat exchanging processes, and there have been some reports on the flow behavior around a butterfly valve by CFD [3-5].
Numerical Simulations The commercial CFD code FLUENT6.3 is employed as a platform for CFD simulation.

CFD Analysis of the Effect of Surface Contour of Nose Cone of a Space Vehicle on the Thermal Field during Re-Entry K.V.
The commercial CFD tool SolidWorks Flow Simulation module was used for the analysis.
In SolidWorks Flow Simulation mesh is generated.
Conclusion In this present study, flow simulations are conducted on various configurations of nose cone of a reentry vehicle using CFD software SolidWorks Flow Simulation.
From the simulation results the following conclusions can be drawn

The CFD numerical simulation on flow characteristics of BOF gas in evaporating cooler has been accomplished.
The gas velocity distribution, temperature distribution and dust distribution in the evaporating cooler are simulated by CFD.
Optimization of Design of Evaporating Cooler Mathematical model on fluid flow and temperature distribution in evaporating cooler is established, and CFD is used to numerical simulation.
As a result, the CFD investigations proved the BOF gas velocity and temperature distributions are improved and optimized.
CFD numerical simulation is applied to study the gas flow field and distribution of temperature field in evaporating cooler.

Simulation on combustion process of 16V240ZJ diesel engine WANG Juan a, WANG Feng b and LI Minghai c Dalian Jiaotong University, China awangfeng19840224@yahoo.cn, b77348963@qq.com, cdlminghai@vip.sina.com Keywords: CFD；numerical simulation； the advance angle of fuel；moving mesh Abstract.
Three-dimensional computation of spray and combustion in 16V240ZJ diesel engine was performed by CFD numerical simulation tool FIRE.
By calculus simulation, we have a thorough understanding of the combustion process of 16V240ZJ diesel engine.
Simulation results may seen in Figure 10.
Summary (1) It has the guiding sense regarding the chamber's design and improvement by simulating through CFD software.

Skea et al. [2] used a CFD approach to model underhood air flow and heat transfer by using accurate boundary condition obtained from empirical data and from other simulation tools modelling complementary thermal systems in the vehicle.
Damodaran and Kaushik [3] developed a full scale CFD model of underhood using FLUENT as the simulation tool.
Table 2 shows the results generated from the CFD simulation under various driving conditions. 96 numbers of CPU have being used at MIMOS.
Total solver CPU times to run this simulation are 10058891 seconds.
Smith, Using CFD for underbonnet thermal management, EACC 2003, 1st European Automotive CFD Conference, Bingen Germany, 25-26 June 2003