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In addition, high requirements of equipment to obtain the flow characteristics of ring seals which is costly, it is very difficult to obtain the leakage through experimental method, and based on CFD simulation is often ignored seal ring clearance in most cases.
Thus, the integral model of wear-ring was considered to simulate by CFD and it has great significance to analyze its volume loss [2, 3].
American Baskharone use finite element analysis method for multi-stage pump to simulate internal clearance leakage flow and analyze its impact by way of CFD, and the results compare to the existing model with leakage[ 4].
In summary, the numerical results indicates it more accurate and feasible for submersible well pump simulation.
Zhao: Research on Wear-rings of Centrifugal Pump Based on CFD Cod (MS., Huazhong University of Science, China 2006), p. 27-28, 47-49

Numerical Simulation of Flow Field within Mutational Section Pipe Jianhua Zhanga, Kun Hu and Yifan Xu Navy Submarine Academy, Qingdao 266042, China azjh_feiyu@yahoo.com.cn Keywords: section mutation; compressed gas; pipe; numerical simulation Abstract.
But the disadvantages can be overcome if CFD is used.
Through conducting the numerical simulation of interior flow fields of two different section change pipes by CFD software, this paper researches the influence of different mutational patterns of cross section on pipe flow of compressed gas and pressure drop rule reflected in the process that compressed gas is going through pipelines.
To seize the accurate details of the flow, encryption of gridding on cross areas is needed when we use CFD to analyze the flow field
Numerical simulation of the internal flow in lamilloy [A].

The fabrication of chip and set-up of system are clearly described and simulations also carried out utilizing CFD-ACE to study the electric field strength distribution and the time span when fluid passes through different electric field strengths.
Simulation and Results The Simulations were also carried out on the personal computer using the CFD-ACE to analyze different models.
And simulations were also carried out about this model.
The fabrication of chip and set-up of system were described and simulation of the proposed EP system was also shown in the paper.
Simulations using CFD-ACE were also carried out on different models.

It also presents theoretical simulation studies and actual studies on a real object, which enabled assessment of the propeller’s parameters.
Based on tests conducted on prototypes and simulations, a propeller in the form of a piston that is simultaneously a two-flap valve was proposed.
The CFD 1 line describes the analysis for ideal conditions, and the shape of CFD 2 was determined based on parameters measured on the actual object.
Distribution of water velocity in the propeller: ideal (CFD 1) and actual (CFD 2) Additional tests involving CFD analysis allowed presentation of pressure distribution in the propeller.
Figure 7 presents two specifications: in ideal (CFD 1) and in actual (CFD 2) conditions.

., China Steel Corporation, Kaohsiung, Taiwan a n1696411@ccmail.ncku.edu.tw, b jangjim@mail.ncku.edu.tw cybchen@mail.ncku.edu.tw, d 145649@mail.csc.com.tw Keywords: Coke oven, Numerical simulation, Thermoelectric cooler Abstract.
In this paper, the necessary conditions of the inspective device were found out by building a three-dimensional numerical model of the device to simulate the temperature distribution inside the device with CFD commercial software.
Numerical Method In this study, the commercially available finite volume method software, CFDRC [3], has been used to carry out CFD simulations.
Spalding: Mathematical Models of Turbulence, Chap. 5, pp. 90-100, Academic, London. (1972) [3] CFD-ACE, CFD Research Corporation, Alabama, USA. (2003) 280 5 A-A Heat sink TEC Copper Camera Quartz glass IR filter Insulation A A Air Air 420 280 Unit： mm Fig. 1: The Schematic diagram of the insulated box Computational Domain y z x Air Inlet Box surface heat flux Air Outlet Quartz Glass IR Filter Camera Lens TEC Hot-end heat source=+q''+Pin Cold-end heat sink= -q'' Fig. 2: The computational domain and boundary conditions V (m/s) Fig. 3: The stream line distribution inside the inspection device T (℃) 30 35 45 50 55 60 80 65 70 75 40 T (℃) 30 50 200 350 500 650 800 950 1100 1200 Air CCD TEC Fig. 4: The temperature distribution of the insulation and CCD camera 3 3.5 4 4.5 5 flow rate (Nm3/min) 0 10 20 30 40 50 60 70 80 T ( oC ) air inlet temperature to insulated box

Spalart-Allmaras one-equation turbulent model was used for simulations.
CFD analysis of the low-speed aerodynamic characteristics of a UCAV.
M., "Navier-Stokes Simulation of Burst Vortex Flowfields for Fighter Aircraft at High Incidence,"Journal of Aircraft, Vol. 28, No. 10, 1991, pp. 638-645
Analysis of Delta Wing Vortical Substructures Using Detached-Eddy Simulation[J].
A., Development of a Common Research Model for Applied CFD Validation Studies.

Later, CFD method based on micro element becomes a powerful means for studying fluid in recent years [3].
CFD method is not limited by the hypothesis so it is fit for not only ship but also marine vehicle.
Although flow field can be analyzed by CFD, it is difficult to treat moving boundaries.
To verify feasibility of the composite scheme with CFD, straightly navigating of a conceptual amphibious vehicle was simulated.
Numerical Simulation Based on ALE Governing Equations of Fluid.

With the rapid development of the computational fluid dynamics(CFD), CFD tools to analyze the aerodynamic characteristics of aircraft have been widely used in the aircraft design phase.
Simulation Model Computational Grid.
Simulation is effective.
Journal of System Simulation 2010,s1
[7] Wilcox D: Turbulence modeling for CFD.

Numerical simulation Abstract.
Lattice Boltzmann methods (LBM) have become an alternative to conventional computational fluid dynamics (CFD) methods for various systems.
Simulation indicate that LBM can simulate the vortex taking place and shedding effectively.
After twenty years of development, lattice Boltzmann methods have become an alternative to conventional computational fluid dynamics (CFD) methods for various systems.
The data demonstrate the validity of LBM simulation.

Numerical Simulation of Random Wind-excited Response Analysis of Henan TV Tower Yong ZENG1,2,a, Hongmei Tan1,2,b 1.
The shape coefficient of the TV Tower’s each segment is obtained based on CFD.
CFD simulation to obtain the shape factor is obtained by CFD simulation and wind load time history of the tower is generated by harmonic synthesis.
Walther (1997), “Aeroelastic analysis of girder sections based on discrete vortex simulations” [J].Wind Eng.
Numerical Simulation of the Drag Coefficient and Analysis of Dynamic Response for Flow Around Henan TV and Broadcast Tower(I)[J].