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By using the commercial CFD code, FLUENT, the analysis of a heat and mass transfer phenomena was done.
In this simulation, the source gas is assumed as the silane (SiH4) and the carrier gas is assumed as H2.
Theoretical Analysis The geometry for numerical simulation is shown in Fig.1.
The numerical simulations are carried out for 5, 8 and 12inch deposition surface.
Grid system for numerical simulation Fig. 2.

Thus, this study involves the efforts to determine the appropriate diameter of the premix injector where the injector sprays characteristics is produced by using Computational Fluid Dynamics (CFD).
Further simulation is conducted using a spray with a discrete phase injection at the outflow hole injector nozzle.
Methodology This study involved 3-dimensional, steady and multiphase simulation using Eulerian volume of fluid model for a mixture flow inside the injector as shown in Fig. 1.
The mixture used was crude Jatropha oil (CJO) and air with the second stage of the simulation employed discrete spray model.
Hochgreb, Discrete multicomponent model for biodiesel spray combustion simulation.

Simulation for Operation of Tidal Power Plant Ouyang Xiangbo1,a Lu Wei1,b 1 Guandong University of Technology, China aoyxb@gdut.eu.cn, bLuwei@tom.com Keywords: computer simulation, renewable energy, tidal power plant.
Simulation is the basis of planning design and optimal operation of tidal power plan.
In this paper, a method of simulation modeling is proposed.
According to the shape of bulb, angle of guide vane, shape of blade, the on-cam relation of vane and blade, the characters of bulb-unit were calculated by computational fluid dynamics (CFD) in theory [3].
The simulation of jiangxia was presented which proved the efficiency of the proposed method.

Numerical Simulation of triangle-arranged tubular heat exchanger Hui Li1,a, Ruihua Hu1,b 1Huang He Science and Technology College, Zhengzhou, Henan, 450063, China a feng_109_1@163.com, b 1587857110@qq.com Keywords: Fluent, numerical simulation, effect of heat transfer.
Based on the principle and method of computational fluid dynamics (CFD), using the software, FLUENT, the inner water flow field in the cross-section geometric model of a triangle-arranged tubular heat exchanger was simulated and the flow details were studied roundly.
Fig.1 The mesh division of geometric model Simulation Results The figure of convergence curve.
Fig.4 The figure of pressure distribution The Improved simulation results.In order to make the distribution of the cold fluid within the heat exchanger more uniform and to improve the heat transfer effect of the fluid, a small improvement of the structure of the heat exchanger is shown in Figure 5.
Therefore, compared with the experimental study, the method of numerical simulation saves the time and costs and provides a foundation and reference for structural design optimization of the heat exchanger.

In addition, along with the rapid development of computer technology and numerical method,numerical simulation becomes a powerful method to study cavitation phenomenon. cavitating flow field was simulated based computational fluid dynamics (CFD) and so on[5,6,7,8].
The numerical simulation was used to simulate the flow field around the hydrofoil.
Hydrofoil model Numerical simulation The flowing fluid media in the model is water, the flow is single-phase flow, so liquid flow in the model can be considered as incompressible flow.
For presented simulation, unstructured tetrahedral mesh, shown in figure 2, is used in the computational domain.
Conclusions The present work demonstrates the possibility of using CFD in improving cavitation phenomenon in hydraulic machine.

This paper presents results obtained from the application of a computational fluid dynamics (CFD) code Fluent 6.3 to modeling of elevated pressure methane non-premixed sooting flames.
In this paper, the results of the application of a computational fluid dynamics (CFD) code Fluent 6.3 to modeling of elevated pressure methane non-premixed sooting flames are presented.
All the above calculations were simultaneously performed using commercial CFD software FLUENT ver. 6.3 which functions as the processor as well as post processor.
The solid line represents the simulations resulting from the use of Tesner’s model, and the dashed line the simulations resulted from employing Khan and Greeves’ model.
Conclusions A numerical simulation of soot formation and destruction has been adopted to study the performance of two soot models for prediction of soot levels in turbulent non-premixed flames.

Abstract: In order to understand the relationship between the number of blade and the performance of the self-balance multistage centrifugal pump’s first stage impeller internal flow characteristics, Reynolds Navier-Stokes equation and turbulence model are used for numerical simulation.
The objects of numerical simulation are five self-balance multistage centrifugal pump’s first stage impellers, the blade number of them is 4，5，6，7，8.Under the rated flow ,the numerical simulation obtain five kind of impeller inner flow field distribution , Through the comparative analysis ,when the number of blade is 4,8,the flow of the impeller’s inner and pressure distribution become chaos ;And, the number of blade is 5,6,7, With the increase of blade number, the impeller internal flow are smoother，the head and efficiency are enhanced correspondingly.
In the recent years, with the development of computer technology and fluid dynamics (CFD), making use of CFD for simulating the hydraulic part of pumps has become an important method for optimization design of the pump.
In order to the truth of simulation, the number of the grid in the inlet of the blade, should be increased.
The media for simulation is clean water, whose density is 998.2 kg/m3, and whose kinematic viscosity is 0.001003 kg/(m.s).The convergence precision is set to 10 e -5.

Micro-thermoelectric-generator design and analysis based on catalytic combustion of hydrogen Feng Wang 1, a, Guoqiang Wang 2, b, Jing Zhou 2, c, and Xinjing Zhou 2, d 1Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education, Chongqing, 400030, PR China 2College of Power Engineering, Chongqing University, Chongqing, 400030, PR China a wangfeng@cqu.edu.cn, b 513715507@qq.com, c 646108160@qq.com, d 497314155@qq.com Keywords: thermoelectric; catalyst combustion; hydrogen; simulation Abstract.
With the application of general finite reaction rate model in CFD software of FLUENT, the effect of inlet parameters on the highest temperature difference between the hot and cold plate of the generator was studied.
Physical, mathematical and kinetic model The physical model used by simulation is shown in Fig.1.
Results and discussion A In simulation, through variation of the inlet parameters such as reactants inlet velocity of Vin and inlet temperature of Tin, the maximum temperature difference between the cold and hot sides of the thermoelectric generator ΔT was studied.
Numerical simulation of characters of catalyzed combustion of hydrogen-oxygen mixture in micro-scaled chambers [J].

Thermal simulation is the basics of this method, which calculated the case temperature of each device in astronautic electronic products.
Thermal Simulation.
Thermal simulation is on the basis of the digital model of astronautic electronic products.
Many commercial computational fluid dynamics (CFD) tools, which can predict the heat transfer in and around electronic products, can be used to assist thermal simulation.
By the CFD tools, the case temperature of each device in the digital model can be separately calculated under the ambient temperature of -54, -35, -25, -10, 50, 60, 70, 71 ℃.

So closing the Pareto front solutions for cross breeding probability increases, the convergence of computer process is accelerated, the simulation time is reduced.
Two parent individuals produce two son individuals, parent individuals are deleted at the same time; (6) The restructuring: All individuals set a new Pt; (7) The update: The At-1 combines with Pt, selection mechanism according to the environment, one of the N entities are chosen from 2 N individuals; (8) The termination: if the termination conditions are met, the simulation program is terminated, otherwise step (2) is returned.
On the basis of unmanned aircraft wing and tail are imported into the CFD software, the aerodynamic parameters of unmanned aerial vehicle are get.
CAD Modeling NCGD Optimization algorithm Longitudinal performance analysis Dynamic model Aerodynamic derivatives Aerodynamic parameters CFD calculate Quality characteristics Output Constraint Yes No Fig 1 The flow chart of calculation 4.
Aircraft Control and Simulation, A Wiley--Interscience Publication JOHN WILEY and SONSS,INC,2010