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This study based on the simulation and analysis of building wind environment done with the aid of computer.
In 1974, Denmark scholar Nelson R.M. 25 was the first application of CFD model to predict structures of flow field and heat transfer phenomena in academics, as information is developed, advances in computer instruction cycle, numerical simulation of fluid dynamics in recent years has been widely used in exploring architectural analysis of the wind field.CFD simulation is based on the governing equations of continuity, momentum, temperature, species, turbulent energy and turbulent dissipation rate.The study was conducted by solving the hydrodynamic equations group and P.J Richards, R.
Musy, who proposed boundary area is calculated as reference for this study, the scope of this study is set to 2846m × 1595m × 576m(Fig.2-a).In the area for simulation calculation, the method of mean grid setting will be adopted to verify the digital simulation.
The results are as follows: The simulation result of the original design.
We therefore revised some of the building layout and conducted another computer simulation analysis.

The electrolyte flow channel was used as numerical simulation physical model.
Numerical simulation of workpiece surface speed distribution was carried out with different cathode outlet slot structure by using Computational Fluid Dynamics (CFD).
Mesh quality directly affects numerical simulation results of the flow field.
Therefore, the numerical simulation was performed with different inlet pressures and fixed inter-electrode gap (∆ = 0.5mm).
Wang: Computational fluid dynamics analysis - CFD Software Theory and Application (Tsinghua University Press, Beijing 2004)

This work uses CFD tool in ANSYS CFX software to calculate the aerodynamics parameters generated by main rotor using in UAV.
This work uses ANSYS CFX, a CFD tool to calculate the aerodynamics parameters generated by main rotor using in UAV using the ideal of simulation that were remarked in [3-5].
It can only be calculated after the CFD simulation, since the actual boundary layer profile is needed for this.
In CFD, it is used in turbulence models that need the wall distance for modelling the influence of the Reynolds stress tensor.
Ilinca, “Assessment of turbulence model for flow simulation around a wind turbine airfoil,” Modeling and Simulation in Engineering, February 2011

On the other hand, we also used simulation software on PC to analysis the flow field and electric field for our design.
Fig. 5 Glass substrate and PDMS channel Fig. 6 Micro channel design and DEP-QCM device Pro/E Model and CFD Analysis After we made the design of micro chip and structure of micro channel, we can saved as the IGS file type and then analysis in the CFD-GEOM and CFD-ACE software.
We need to set up grid for every when a 3-D structure need any analysis, and this work can complete in CFD-GEOM.
After all pretreatment had done, those parameters will be set in CFD-ACE (Table 1).
We can see the design structure clearly in the CFD-ACE window and wait for some minutes to get the analysis result and modify the parameter to restart analysis (Fig. 7).

CFD Investigation for Indoor Environment of A District Standard Room in Jinan City Dong Yang1,2,Qingmei Wen1,2,a,Congju Zhang1,2,Xueting Liu1,2,Shijun Wei1,2 1Key Laboratory of Renewable Energy Utilization Technologies in Buildings of the National Education Ministry, Jinan 250101, China 2Shandong Provincial Key Laboratory of Building Energy Saving Technology, Jinan 250101, China awenqingmei713@163.com Key Words:roof radiation;displacement ventilation;composite systems;numerical simulation Abstract.
Simulation results and analysis Characteristics of indoor temperature distribution.
Conclusion Use the CFD method to simulate the temperature and velocity field of the room, whose system is combined with cooling roof and displacement ventilation, contrast verification of all data show that this simulation model is established by reasonable, the combination of cooling roof and displacement ventilation system can overcome the shortcomings that when they used along, so that is very good to meet the requirement of thermal comfort.
Simulation and Analysis of the Radiant Floor Cooling and Displacement Ventilation System[J].
Numerical Simulation of Different Kinds of Air Distribution For the Indoor Environment Quality [D].Chongqing University, 2005,10

Results of this simulation show that as the CO2 dilution rate increases, flame temperature and combustion velocity decreases.
Kumar, Numerical simulation of the combustion of hydrogen–air mixture in micro-scaled chambers part II: CFD analysis for a micro-combustor, Chemical engineering science, vol. 60, pp. 3507-3515, 2005
Kumar, Numerical simulation of the combustion of hydrogen–air mixture in micro-scaled chambers.
Vlachos, A CFD study of propane/air microflame stability Combustion and Flame, vol. 138, pp. 97-107, 2004
Vlachos, Combustion characteristics and flame stability at the microscale: a CFD study of premixed methane/air mixtures, Chemical engineering science, vol. 58, pp. 4871-4882, 2003

Coming into being at the end of 1970s, Computational Fluid Dynamics (CFD) has gained a perfect development in the recent 30 years.
Contributing to its short design time, low cost and direct observation, CFD becomes the serendipity of increasing water pump factories.
Calculation Results and Analysis Experimental data and Simulation data.
The simulation data under rated conditions can be obtained by the above equation.
The Computational Fluid Dynamics Analysis——CFD Software Principle and Application (TsingHua University Press,2004)

Analysis and Study of Back Eddy Flow Field Effecting Compact by Angle of Meeting Flow of Reef Kaimin Wang1,a*, Yihong Yang 2,b, Yong Chen3,d, Shuguang Luan1,c 1School of Marine and Civil Engineering, Dalian Ocean University, Dalian 116023, China 2 Shandong Association of Oceanic Engineering, Aquatic Design Institute,Jinan 250013, China; 3Center for Marine Ranching Engineering Science Research of Liaoning, Dalian Ocean University, Dalian 116023, China awkm@dlou.edu.cn, byangyihong-2008@163.com, cchenyonng@dlou.edu.cn , dshugluan@qq.com Key words: Artificial reef; meeting flow angle; back Eddy; Numerical Simulation Abstract: By changing artificial-reef’s meeting flow angle, Use the CFD imitate three-dimensional flow field under the compaction of constant flow, and analyze the effect of back eddy flow field quantitatively.
Now at home and abroad, the research method about artificial reef mainly includes physical model experiment, wind tunnel experiment and numerical simulation.
Use CFD software, carry on numerical simulation tests for six kinds of reef model which differ in meeting flow angle, by change the meeting flow angle, analyze the back eddy flow field effecting, conclude the best meeting flow angle, in order to provide a basis and reference of the reef’s design and make for our country.
Dim the bottom side length as reef length, then, the length of reef model A; B; C; D; E; F are 2m; 2.54m; 3.15m; 4m; 5.46m; 9.46m respectively. 2.5 Tests and determination of boundary conditions The artificial reefs are set in coastal waters generally, in this paper, the computational simulation depth of water was set as 15m, and the flow velocity was set as 2m/s.
Fig.3 Variation about the height; length; width of back eddy with the meeting flow angle Conclusion Paper used CFD software, carried on numerical simulation tests for six kinds of reef model which differ in meeting flow angle, analyzed the back eddy flow field effecting, conclude that: When the meeting flow angle changes from 90° to 15°, the height of the back eddy flow increase at first then decrease, when the angle is 75°, the height of back eddy flow is the largest, when the angle between 90° and 60°, the height achieves larger value.

The end clearance is the main geometrical parameter to establish the CFD analysis model.
Numerical simulation analysis of the flow field was carried out base on the above models by FLUENT.
The simulation results shown as follows: 1.
Numerical simulation of flow field of NC-Electrochemical contour evolution machining based on CFD technology.
Journal of system simulation, 21(2009)73-75

In this paper, the three-dimensional CFD method is used in numerical simulation of the highly intensified diesel engine intake process.
In the present study, the three-dimensional CFD method is used in numerical simulation of the highly intensified diesel engine intake process.
Double helical Helical and tangential Double tangential Fig.1 Three different combinations of intake port The present simulations focus on the transient process of air inlet, the motion of the valve and piston in the actual work process of diesel engine is used as the input condition.
The simulation begins at the TDC of intake process (360°CA), end up at the end of the intake process (580°CA).
[2]HU Yun-ping, LI Qiu-xia, 3D Transient Numerical Simulation of Flow Field in Cylinder of Diesel Engine with Double-intake Port.