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CFD is used to predict the aerodynamic performance of VAWT [3,5].
Variable use in this simulation is chord length (20cm, 25cm, 30cm), angle of attack (0-12 degree), and wind velocity (1-7 m/s), simulation is running in full factorial sequence with 273 running simulation.
The result of the simulations represent in sliding ratio value in table 1 to table 3.
Simulation Results CFD simulations performed to predict the sliding value ratio to be used as a performance evaluator blade configuration.
CFD analysis on wind turbine Savonius Hybrid-Darrius, proceeding SNTMUT 2014, ISBN: 978-602-70012-0-6

To study the flow and swirl characteristics in the variable swirl intake system of a four-valve diesel engine, a numerical simulation with using the three dimensional CFD software AVL-FIRE, was calculated on the intake flow in three types of inlet of the engine.
So the engine can operate in broader range of the swirl intensity in various conditions, so that it can achieve the intake swirl with the best match of the diesel engine conditions [8].In this paper, a CFD numerical simulation was used to research into the intake flow of a diesel engine.
The intake flow characteristics of the two plans are numerical simulated and compared by using the 3-dimension CFD software.
The interaction between the two effects can be analyzed through the results of the numerical simulation.
[7] Ren Lihong, Shu Gequn and Song Rugang, in: The Research and Simulation on Flow Characteristic of Variable Intake System of Motorcycle Engine .

Hydraulic Circulation Test and CFD Analysis of Prestressed Cementing Unit Earth Anchor Ding Li College of Mechanical Engineering, Yangtze University, JingZhou 434023, Hubei, China email: liding001@126.com Keywords: Thermal production well; Earth anchor; CFD; Differential pressure; Discharge coefficient; Circulatory test.
The CFD Analysis The Flow Channel Model of Earth Anchor.
The flow channel inner structure diagram were shown in figure 1. 1-source line; 2-the above anchor joint; 3-throttle nozzle; 4-central tube; 5-the under anchor block joint; 6-export pipeline Fig.1 Diagram of flow channel inner structure of anchor-unit The Data Processing of The Simulation Results.
Fig.2 Relationship curves of flow-differential pressure, flow-flow coefficient of Φ178 anchor with Φ37 nozzle computed by CFD Circulatory Test Test Principle.
[3] Hongjun Zhu, Yuanhua Lin, Longhan Xie, Fluent12 Fluid Analysis and Engineering Simulation, Tsinghua University Press, Bejing, 2010

The operation simulation of wastewater treatment device based on swirling cavitation degradation has been done by means of CFD software.
Numerical simulation and experimental verification have been done.
Then, use CFD (Computational Fluid Dynamics) software to create its mesh model by finite volume method as shown in Fig. 2.
Simulation result shows that the zone with pressure lower than saturated vapor tension can be formed, and simulation flow rate is 0.671173L/s.
Simulation results of device amplified 10 times is illustrated in Fig. 6.

The numerical simulation of cavitating flow in nozzle holes of a vertical multi-hole injector with mixture multi-phase cavitating flow model was carried out.
�ozzle Geometry Based on a four-hole diesel engine injector nozzle, CFD analysis of the cavitating flow in it was carried out.
CFD analysis of the effect of the nozzle geometry on the internal cavitating flow is performed from three aspects.
The mixture multi-phase flow model accompanied with the cavitation model was applied to perform the three-dimension transient numerical simulation for the cavitating flow.
The 3d numerical simulation of the cavitating flow in holes of a vertical multi-hole nozzle using the mixture multiphase cavitating model clearly reveals the 3d nature of the nozzle flow.

In general, there are three major numerical simulation methods in Computational Fluid Dynamics(CFD): Direct Numerical Simulation(DNS), solving Reynolds Averaged Navier-Stokes equations with statistical turbulence models(RANS) and Large Eddy Simulation(LES).
The least square meshless method was first proposed by Liszka and Orkisz in solid mechanics[1] and was first introduced into CFD by Batina[2].
As a new numerical simulation method in CFD, the research of meshless method combined with turbulence models is few.
Governing Equation of Large Eddy Simulation Large Eddy Simulation is based on the concept of separating the flow into large- and small-scale motions.
Large eddy simulation of the flow past a circular cylinder at ReD=3900[J].

A synthesized simulation process was used to predicting temperature and high cycle fatigue (HCF) of cylinder head in this paper.
The K-εmodel was used to 3D flow simulation of cooling water.
The surface heat transfer coefficient of the block and cylinder head on waterjacket side are determined from previous CFD simulation, and its distributions of waterjacket and FEM model mapped by CFD results were shown in Fig. 5.
Fig. 9 The temperature distribution of Cylinder head Improvement design for heat load of the cylinder head From the previous cooling water jacket CFD simulation, it is known that the average HTC of cooling water jacket surface between the exhaust valves nose region was about 22000 W/(m2/K).
High cycle fatigue safety factor A fatigue life evaluation has been performed based on the stress results obtained from the simulation of the engine cycle.

Using ANSYS-FLOTRAN CFD software, the finite element simulation is conducted by a series of procedures, such as two-dimensional model building of fluidic gyroscope, meshing, loads applying and equation solving.
In this paper, we use the FLOTRAN CFD analysis of ANSYS software to have a comparative study in the two different nozzle dimensions, so as to attempt to find a better nozzle dimension which can improve the resolution of fluidic gyroscope.
Solve with Finite Element Method The FLOTRAN CFD analysis of ANSYS software is an advanced tools used to study two dimensional and three dimensional flow fields, the simulation typically comprises modeling, loading and solving [3-4].
Select FLOTRAN CFD analysis of ANSYS software.
Wang: Numerical simulation of practical engineering in ANSYS (Northwestern Polytechnical University Press, China 1999)

By the CFD simulation analysis, the feasibility of jet puncture was verified, the interlayer strength of the connection was increased and the Z bunch to the carbon fiber was eliminated, which laid theoretical foundation by enhancing the layered carbon fiber composite perform quality.
Simulation Establish the jet geometry model and set the boundary.
The simulation analysis through CFD to verify the jet puncture is feasible.
Numerical Simulation of High-pressure Jet Nozzle Based on Fluent，J.
ANNSYS Fluid-structure interaction analysis and engineering examples [M].Beijing:China WaterPower Press,2012.1 [5] C.Chen, S.L.Nei, Z.J.Wu, Z.Y.Li A Study of High Pressure Water-jet Characteristics by CFD Simulation [J].

In the numerical simulation research, turbulent two-phase flow calculations were performed with a commercial CFD computer code referred to as FLUENT to study the gas-solid two phase flow in the sections of backward-facing step and 90 degree bent pipe respectively by using Euler-Lagrange method.
The deviations between the simulations and experimental data lie in the range of 20%-30%.
These results suggest commercial CFD codes such as FLUENT can be used productively for investigations into gas-solid two-phase flow phenomena and as an aid in pneumatic conveying design.
Summary The results of this research and the comparison between simulation and experimental results are encouraging.
Further research should be devoted on the improving the numerical simulation to predict the nature of the two-phase flow more precisely.