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Application of CFD flow analysis software and the SIMPLE algorithm described viscous flow field within the three-dimensional centrifugal fan.
By comparing simulation data with calculated data, optimize the turbine design.
In addition, the most critical characteristic is that the software can generate files directly for CFD calculation, which greatly simplifies the calculation of the fluent pre-processing.
At the last, the software CFD is used for the simulation of the model.
[3] Xie Dan,Chu Wuli: Computer Simulation,4(2009)344~347

Using Fluent software on the horizontal axis wind turbine numerical simulation, analysis of the United States of America S809NREL airfoil aerodynamic characteristics of different angles of attack numerical simulation, analyzes the different angles of attack in the vicinity of the pressure, velocity distribution.
Wind tunnel test study on time-consuming, costly, and with the development of computer technology as well as the turbulence model is ceaseless and perfect, the application of computational fluid dynamics ( CFD ) numerical method research of wind turbine airfoil aerodynamic performance has become the important way and development trend.
CFD numerical simulation to describe complex geometry boundary and flow structure, and in the early design quickly and improve design performance evaluation, performance optimization and save time, save money, greatly reducing the risk posed by new design[1].
Therefore, in recent years on airfoil aerodynamic performance testing more application CFD numerical simulation[2].
This paper uses the CFD software Fluent analysis of the United States of America S809NREL airfoil aerodynamic characteristics of different angles of attack numerical simulation, analyzes the different angles of attack in the vicinity of the pressure, velocity distribution.。

The technology of computational fluid dynamics (CFD) was used in this paper.
The average of 3 tests compared with the simulation result is shown in Fig.3.
Then stable experimental data was compared with the simulation value.
Lin, CFD Simulation of Flow and Temperature Fields in Large Space Building, Nanjing University of Aeronautics & Astronautics.(2007) 19-20
He, Research on Airflow and Air Temperature Simulation in the Piggery Based on CFD, Central China Agricultural University.(2009) 26-30

Numerical simulation of cavitating turbulent flow in a Francis turbine with draft tube natural air admission Hongming ZHANG 1, a, Lixiang ZHANG 1,b 1 Department of Engineering Mechanics, Kunming University of Science and Technology, Kunming 650500, P.R.China ahmzhang8888@126.com, bzlxzcc@126.com Keywords: CFD; cavitating turbulent flow; air admission; Francis turbine; OpenFOAM.
OpenFOAM is an object-oriented C++ library of classes and routines of use for writing CFD codes.
It has a set of basic features similar to any commercial CFD solver, such as turbulence models and discretization schemes.
It is increasingly being used in the numerical simulation of hydraulic machinery.
SIMULATING CAVITATING FLOWS WITH LES IN OPENFOAM, V European Conference on Computational Fluid Dynamics, ECCOMAS CFD 2010, J.

So this new water-jet propulsion method is feasible and it is an effective way to conduct the research by CFD simulation.
The simulation model of its drive device is built.
The simulation volume flow rate and the simulation average velocity of the flow are obtained in the report of the simulation results by the software Fluent.
It is proved that the method of CFD simulation is a feasible and effective way to study the physical model, and the simulation results could provide some references for designing and conducting research on this new water-jet propulsion device.
Mechanism Analysis and Simulation of Water-Jet Propulsion[J].

This paper presents the validation of a CFD model of a direct-flame impingement furnace for billet heating in a full-scale industrial situation, which was not previously published, and opens the way for more simulations and detailed studies of the phenomena that occur inside this type of furnace.
On the other hand, CFD models involve the solution of the partial differential equations that govern the reactive flow inside the furnace.
In the present simulation the average y+ was 3.3.
Note that in this simulation, only part of the industrial furnace was simulated.
Malikov et al. [2] report direct impingement furnace efficiencies of 70-80%, which are within the values obtained both in the energy audit and in the CFD simulations.

Taeyeon Kim et al. (2009) assessed pedestrian wind comfort based on a wind tunnel experiment and CFD simulation analysis. [7]; Jian Hang et al. (2013) proved that semi-open street roof is better able to offer pedestrian space compared to no-covered and fully-covered roofs based on CFD simulation analysis on five semi-open roof with different covering sizes.
Up until now, there’s no study in arcade based on a combination of field measurement and CFD simulation analysis.
CFD Numerical Simulation Analysis.
Fig. 5 show the comparing results of both field measurement and CFD numerical simulation, which present similar trends, the reliability of CFD numerical simulation method can be proved.
Fig. 5 (a) Wind velocity results compare of field measurement and CFD simulation (b) Wind velocity by CFD Table 4 CFD Numerical simulation Analysis of three cases.

OpenFOAM is an object-oriented c++ library of classes and routines of use for writing CFD codes.
It has a set of basic features similar to any commercial CFD solver, such as turbulence models and discretization schemes.
It is increasingly being used in the numerical simulation of hydraulic machinery.
The computational grid of the complete turbine is generated using ICEM CFD ,including spiral casing with stay vanes, guide vane cascade, runner and draft tube with 8,300,000 elements was used.
SIMULATING CAVITATING FLOWS WITH LES IN OPENFOAM, V European Conference on Computational Fluid Dynamics, ECCOMAS CFD 2010, J.

Schematic diagram of the boiler furnace and mesh system used Numerical Simulations.
A computational fluid dynamics (CFD) program was used to perform the simulations.
NOx simulation mainly considerate the formation of thermal NO and fuel NO.
Conclusions A CFD model of a 600 MW opposed swirling coal-fired utility boiler with supercritical parameters has been established.
Busekrus, “Conversion of existing coal-fired power plants to oxyfuel combustion: case study with experimental results and CFD simulations,” Energy Procedia, 1(2009) 549-556

Research on Francis Turbine Hydraulic Vibration by CFD Jing yang1, a, Lida Zhang1,b and Lei Lu1,c 1School of Energy and Environment, Xihua University, Chengdu, China any.yangjing@163.com, bzlida@126.com,c812810027@qq.com Keywords: water turbine, hydraulic vibration, air compensation, analysis.
The models was built by using UG and analysed by CFD numerical analysis software to simulate the vibration conditions with air-water two-phase flow.
In modeling some simplification is necessary to be made for simulation, because some of the details will affect the accurate simulation results, as shown in Fig. 1.
Fig. 7 Velocity vector(improved) Fig. 8 Turbulent kinetic energy cloud(improved) Conclusion This paper is based on the abnormal vibration of the low head Francis turbine under the head higher than rated was studied as an example by CFD numerical simulation.
[3] Longhan Xie, Xinyu Long, Jiongming Zhang:CFX fluid analysis and Simulation,Electronic industry press,chapter, 8,Beijing 2012,(in Chinese)