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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.

Three-dimensional Unsteady Simulation in a Water Turbine Ying Hu 1, a and Kun Wang1,b 1 Faculty of Mechanical and Electrical Engineering Kunming University of Science and Technology, Yunnan, China ahuyingtennis@hotmail.com, b 541756437@qq.com Keywords: Water turbine, Unsteady flow, 3D simulation, CFD Abstract.
This paper introduces the 3D numerical simulation of unsteady turbulent flow in the entire flow passage of a water turbine model with CFD technology.
The 3D unsteady turbulent flow in an entire Francis turbine model is simulated using the latest CFD technique and the full-implicit multi-grid method.
Automated simulation of flapper and foil system.
Large eddy simulation of turbulent flow downstream of a backward-facing step.

Therefore, the computational fluid dynamics (CFD) becomes a major means to study mobility of the engine inner coolant [1].
The computed result from CFD verified by experiments has considerable reliability and accuracy.
Comparison between simulation and experiment Comparison Between Simulation and Experiment This article uses the outlet coolant temperature which was measured by the thermal balance experiment to verify the accuracy of simulation results.
Contours of heat transfer coefficient Conclusions 1）The performance of engine water jacket was analyzed by CFD.
Ricardo VECTIS CFD Fundamental Theory.UK:[s.n.],2005

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.

CFD (Computational Fluid Dynamics) simulation validated with experimentation can be a good alternative for performing series of experiments.
CFD modeling and simulation for the best fin design has been carried out for the current study.
The simulation was performed using ANSYS 14.5.
The initial assumptions are, in general, the simulation is under steady state.
Result and Discussions Velocity, Temperature and pressure data were obtained from CFD simulation results.

CFD Analysis of Two-phase Flow in a Solid-Liquid Hydrocyclone Ding Feng 1,Si Huang2,a,Li Luo2and Weiguo Ma1 1School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China 2School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China aemail:huangsi@scut.edu.cn Keywords: hydrocyclone; two-phase flow; numerical simulation; CFD Abstract.
Based on the simulation, the influence of particle volume fraction of feed flow, mean diameter of particles and viscosity of liquid phase on the two-phase flow and separating performance has been investigated for optimizing design.
With the development of computational fluids dynamics (CFD) and computer technology, CFD is now providing a new and convenient tool for hydrocylone design [1-7].
Fig.1 Hydrocyclone Euler-Lagrange method is used in the two-phase flow simulation of the hydrocyclone.
Some features and natures of the solid-liquid flow are found based on the simulation, such as relations of pressure drop and of separation efficiency corresponding to particle volume fraction, particle size and fluid viscosity and so on.

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.

Three-dimensional computational fluid dynamics (CFD) simulations have been conducted to evaluate and to optimize the designs of the main components of the system.
Stator channels Rotor channels M Electric motor ω Figure 2: left rotary-piston valve, right CFD simulation to determine the properties of the valve Connection to tank Connection to pump Connection to cylinder Fluid domain of the stator Fluid domain of the rotor Connection to pump Connection to cylinder Fluid domain CFD Simulation 3D Model The 3D model of the valve with the main components of a rotor and a stator is shown in Fig. 2.
In addition the CFD simulation provides the basis for the next improvement of the valve.
The CFD simulation has played an important role in understanding the flow behavior and in determining the characteristics of the proposed rotary piston valve and high-frequency cylinder.
The test results will be used to validate the CFD Simulation and furthermore to enable a design optimization of the hydraulic actuator.

Numerical simulation is of interest for most fan designers to optimize the fan designs.
As the fan designers relying on the numerical simulation, the accuracy of tools such as CFD in predicting the performance has become a subject of interest.
The model is simulated using commercial CFD package, ANSYS FLUENT.
During 1970s and 1980s, the computational fluid dynamics (CFD) method provided an effective approach to the simulation, design, optimization, and flow analysis of fans [3].
Once simulation converged the flow rate will be numerically calculated and compared with experimental results.