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This paper analyzes the simulation results obtained by using FLUENT 6.1, simulation being carried out on supersonic inlet.
Overseas, the computation results from the CFD programs are usually compared with that from the experiment by various research institutions, so to confirm the accuracy of numerical methods and turbulence models [2].
Figure 3 illustrates the calculation domains used in the numerical simulation.
These two functions are employed by the two k- models in the simulation computation.
In this paper, commercial CFD program FLUENT was used and its prediction accuracy verified.

Most previous studies carried out by some of the empirical method and design of experiments[7], for the optimization of hydraulic conditions less, since the 21st century, high-precision and cost-effective CFD (computational fluid dynamics) simulation technology has been widely applied the membrane bioreactor design and optimization studies of membrane fouling [8,9].
We applied the Gambit which is a CFD preprocessor mesh on the model and choose body-fitted grid (T-Grid) to ensure mesh quality.
Simulation of turbulence using standard κ-ε model.
[8]Zhang Xiuhua,Wang Daoxi, Experiment and 3-D Simulation of Airlift Loop Reactor, J.
CFD simulations of membrane filtration zone in a submerged hollow fibre membrane bioreactor using a porous media approach, J.

Numerical Simulation of the Performance of Gas Turbine Combustor LIU Kai School of power and energy engineering Shenyang Aerospace University, Liaoning, Shenyang, 110136.China email liukai1971@163.com Keywords: gas turbine; combustor; velocity field; temperature field; numerical simulation Abstract.
Numerical simulation of the performance of QD128 gas turbine combustor was finished using CFD method.
In this paper, numerical simulation of QD128gas turbine combustor was done, in order to master flow and combustion of the combustion chamber, to master combustion chamber design features, and then to provide the necessary information for troubleshooting and improvement the gas turbine Numerical simulation of the basic equation 1.1 Mathematical model.
Numerical simulation and results analysis Simulation condition is base load in this paper, parameters are shown in tab1.
Tab1 Simulation paremeters Total temperature of air T2（K） Air flow ma(kg/s) Nature gas flow mg(kg/s) 634.15 53.34 4000 Nature gas composition is shown in tab2.

The FEA is to simulate conduction in solids, and the CFD could be used to simulate both conduction and convection.
The modified thermal parameters are determined by correlation between CFD and FEA of simple geometries [19].
Meanwhile, CFD will be used as a supplement to determine heat transfer coefficients and conductivities for FEA, and sometimes to be the only way for simulations of highly flow dependent problems, such as the flow control module (FCM) with strong free convection.
The important key data required for the thermal analysis [7,9] based on the methods of FEA and CFD are listed below.
Additionally, FEA and CFD are two feasible methods for thermal analysis.

The paper is devoted to selection of a numerical approach for simulation of fluid flow in a torque flow pump of “Turo” type and its influence on simulation results.
At present numerical simulation of fluid flow in pumps is used with modern CFD-codes.
Numerical simulation allows costs decrease in dozen times.
However CFD-codes turbulence models and specified initial conditions, used for centrifugal pumps, don’t show adequate flow pattern for vortex pumps because of their flow structure differences.
Kochevsky, Possibilities for simulation of fluid flows using the modern CFD software tools, Ploiesti (Romania), (2005) 64-79

Study on 3D Modeling and Flow Field Simulation of Urea-SCR Catalytic Converter Zhilin Liu Agricultural and Animal Husbandry College of Tibet University, Linzhi, Tibet, China, 860000 Linlin0324ok@126.com Keywords: Catalytic Converter; Flow Field; 3D Modeling; Simulation Research Abstract.
In recent years, numerical simulation of engine working process has been booming in China, CFD technology has become one important mean for theoretical study and optimization design of engine, providing new methods and ideas to solve the problems in SCR application.
The use of CFD numerical simulation to SCR system can enable us understand mechanism of the problems generated deeply, and provide guidance for the experiment, saving the test required manpower, material resources and time.
Selected an injection cycle for simulation, urea solution was sprayed at 0.1 second, and ended at 0.4 second.
Multi-scale SCR modeling, ID kinetic analysis and 3D system simulation[C].

Fig.2: Multi –layer heat sink: thermal resistance network for and layers Table 1: Description of Equation for Thermal Resistance network (R) Authours Channel geometry Materials, Coolant types Nature of the work, method Analysis List out all assumptions devices Description of Equation for Thermal Resistance (R) Baodong Shao, Heming Cheng (2012) L×W=6mm×6mm, and fin are 196 and 50[µm] double-layer,--- deionized water Optimization and Numerical Simulation (CFD) software& adaptive GA cool a chip power is 200[W] heat flux is 556[W/cm2] N.
Experiments and Modeling Single-Phase flow one-dimensional, simulations using CFD electronic Assuming an isothermal condition systems P.Skandakumaran,A.Ortega, T.
Skandakumaran et al. [17] developed a simple thermal resistance network model for both single and stacked(multilayer) heat sinks, Numerical simulation using CFD were performed and compared with experimental results .
The most recent study is 2007 by Shao et al. [7, 16], who developed a new method for optimization by utilizing the cross-sectional sizes of the micro-channels at the heat flux of 278[W/cm2).They optimized the configuration sizes of micro channels cooling heat sinks using the thermal resistance network model with CFD method for simulation.
Jianyun and H.M Cheng,Optimization and Numerical Simulation of Multi-layer Micro channel Heat Sink”, Procedia Engineering 31(2012) 928 – 933

Simulation Grids.
The simulation grid is created using ANSYS ICEM CFD and it is shown in Fig. 2.
On the accuracy of CFD simulations of cross-ventilation flows for a generic isolated building: comparison of RANS, LES and experiments.
"PIV verification of greenhouse ventilation air flows to evaluate CFD accuracy."
"Cross-ventilation in a generic isolated building equipped with louvers: Wind-tunnel experiments and CFD simulations."

On the numerical simulation side, researchers focused on simulating the temperature, chemical species concentration, flow field and formation of NOx on the internal reactor by using CFD methods.
So results of numerical simulation are very similar and provide credible results with pulverized coal MILD combustion.
All the numerical simulations predict a cold zone correspondent to the lateral jet.
So EDC have advantages on numerical simulation of the combustible particle coal MILD combustion.
Influence of turbulence-chemical interaction on CFD pulverized coal MILD combustion modeling [J].

Analysis on Effects of the Blade Wrap Angle and Outlet Angle on the Performance of the Low-specific Speed Centrifugal Pump Wei Li a, Weidong Shi b, Ting Jiang c, Yan Xu d, Tongtong Li e Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Jiangsu 212013, China alwjiangda@ujs.edu.cn, bwdshi@ujs.edu.cn, cjiangtingdz@126.com, dxuyan15694@163.com, dlitongtong2010@126.com Key words: Centrifugal pump, Blade Wrap angle, Blade outlet Angle, CFD Abstract.
Numerical simulation of the internal flow within the centrifugal pump with the specific speed of 60 at different blade wrap angle and outlet angle is carried out.
This paper is based on the study of the efficient non-overload Submersible Sewage Pump, combined with the traditional hydraulic design and CFD simulation analysis on the flow field [5-7], using the commercial software FLUENT to simulate the flow field and predicting performance of the centrifugal pump with the specific speed of 60 in different blade outlet angle and wrapping angle.
is the flow-head curve, is the flow-power curve, is the flow-efficiency curve Fig.4 External characteristics prediction with different outlet angle is the flow-head curve, is the flow-power curve, is the flow-efficiency curve Fig.5 External characteristics prediction with different wrap angle Conclusions In this paper, numerical simulation of internal flow field and performance prediction of six design methods of submersible sewage pump have been obtained by selecting the amended k-ε two-equation turbulence model using the commercial CFD software Fluent , the results show that: (1) Under the constant wrap angle, the outlet angle and the impeller wake zone is small, the hydraulic performance is relatively good; under the constant outlet angle, that appropriately increase the wrap angle can reduce the solid particles on the impact of the blade outlet, reduce wear and improve the overall efficiency of the pump.