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It has good smoothness and can be used for numerical simulation.
Before the simulation calculation, it needs to discrete the model.
It can transfer abstract data from CFD calculations into images or animation files to understand more easily.
CFD method and wing model are used to describe the wingtip vortex.
Summary of Third AIAA CFD Drag Predicion Workshop: 45th AIAA Aerospace Sciences Meeting and Exhibit, (2007), p.260 [5] Edward N.Tinoco, Venkatkrishnan.

., Yin He Li North Road No.1, Bei Cang Town, Bei Chen District, Tianjin City, China adhj1230_171@126.com, bchaixingteng@tcdri.cn, cniewenhai@tcdri.cn Keywords: Numerical simulation, CFD (Computational Fluid Dynamics), flow field, vertical roller mill, separator, cement.
In order to reduce the larger pressure resistance (pressure difference between inlet and outlet) of a vertical roller mill, the flow field in the vertical roller mill is numerically simulated by CFD technology.
Because grinding process cannot be simulated by CFD program, so the zone between wind ring and the outer brim of mill disk is chosen as TRM53.4 feed boundary.
Results and discussion Table3 Data comparison of simulation with test on the spot Boundary Velocity[m/s] Pressure[Pa] Pressure resistance[Pa] test simulation test simulation test simulation Outlet 18.32 15.75 -10170 -10170 Hot gas inlet1 21.83 20.71 -570 -706.81 9600 9463.19 Hot gas inlet1 18.01 19.13 -655 -444.22 9515 9725.78 Fig.3 Outlet velocity changing tendency of simulation and test on the spot The simulation data see Table3.
It is impossible to avoid the simulation error, however the superiority of CFD simulation, tendency forecast, can be utilized.

A computational fluid dynamics (CFD) model of a 600 MW opposed swirling coal-fired utility boiler has been established.
A computational fluid dynamics (CFD) program was used to perform the simulations.
NOx simulation mainly considerate the formation of thermal NO and fuel NO.
The simulations with three cases were carried out.
The simulations were performed under 600 MW load.

Field measurements [2, 3], wind tunnel experiments [4, 5] and Computational Fluid Dynamics (CFD) simulations [6-8] have all been utilized for studying airflow and pollutant dispersion in street canyons.
Due to the turbulent features of airflow in atmospheric boundary layers, the selection of turbulence models in CFD simulations is crucial for reliable predictions of pollutant distributions in street canyons.
The objective of this study is to investigate the performance of various turbulence models in the CFD simulation of pollutant dispersion within an isolated street canyon.
Numerical simulations Physical model.
Computational domain and isolated street canyon configuration CFD model.

Water tank experiment and Particle Image Velocimetry (PIV) technology were used to gain typical wind flow field and validate the simulation results.
The application of computational fluid dynamics (CFD) in wind engineering research has significantly increased in the last two decades[2,3].
CFD performs the concepts needed to solve the governing equations for fluid mechanics using numerical methods and allows for easier control of each parameter, So CFD could be a powerful tool for parametric analysis of the factors influencing flow and dispersion processes and is often used jointly with physical experimentation, such as wind tunnels, water tank or field studies.
Because CFD techniques rely on various assumptions and results are usually associated with high uncertainties, so there is a strong need for validation and assessment of the data obtained by numerical simulation.
Physical simulation of atmosphere dispersion.

The CFD method allows for limited research opportunities, as it relates to energy-saving devices.
Numerical Prediction of Energy Saving Effect of Rudder Bulb Based on CFD Technology For the purpose of maximum efficiency of propeller, the paper designs 13 different rudder bulbs.
The result of viscous CFD prediction shows that the propeller thrust has increased by 1.3% and the total resistance of ship has decreased by 0.74%.
CFD simulation of propeller and rudder performance when using additional thrust fins.
Mesh partition methods for numerical simulation of the flow fields of full form ships.

The analysis was conducted using a CFD method.
Also, they declared that numerical simulations are necessary to generate a complex cavitation phenomenon.
Research on dynamic modeling and simulation of axial- flow pumping system based on RBF neural network.
Simulation of cavitation performance of an axial flow pump with inlet guide vanes.
Numerical simulation of water flow in an axial flow pump with adjustable guide vanes.

The numerical simulation based on computational fluid dynamics (CFD) is a good method to choose.
Thirdly, numerical simulation based on Computational Fluid Dynamics (CFD) is taken to simulate the airflow around MAVs and observe its parameters.
CFD is an important assistant tool for aircraft design.
So simulation in two dimensions can not describe the flow accurately.
The low aspect ratio wings have strong three-dimensional characteristics, so three-dimensional simulation is more suitable than two-dimensional simulation.

The simulation uses residual of 10-5 high precision to calculate, and obtains the residual convergence curve.
Numerical simulation is one of the methods which are commonly used to design thermal system.
Numerical simulation of FLUENT heat exchanger independent dedicated ventilation system FLUENT software is the most popular CFD software on the market at present[5,6].
The online survey found that FLUENT is CFD software which is also widely used in China.
Firstly, it establishes the flow field and solid field control equation mathematical model based on computational fluid dynamics CFD theory.

Magnetic field simulation and flow field simulation are done through ANSYS and computational fluid dynamics (CFD) software.
Unthreaded hole is experimented on the basis of simulation.
Magnetic field simulation and flow field simulation are done through ANSYS and computational fluid dynamics (CFD) software.
Simulation of swirling airflow compounded with magnetic-field finishing process Simulation of magnetic field.
Zhang: The Principle and Application of CFD Software（Tsinghua University Press, China 2004).