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The Simulation Application for the Structure Design of the Etcher Nozzle Lin Sheng China JiLiang University HangZhou, P.R.China lins@cjlu.edu.cn Keywords: Etcher; Nozzle; Structure; Simulation; Flow Field Abstract.
This paper studied the etcher nozzle structure in detail by using the flow simulation technology to analyze how to get uniform follow field on the surface of the etching wafer, and then this paper determined the structure parameters of the etcher nozzle. 1.
This paper adopted the software CFD－ACE to study the etcher nozzle structure in detail so that to offer the theoretical basis to get the structure parameters of the etcher nozzle by using the simulation method. 2.
Navier－Stokes equation: Here, -----Density; ----- Velocity; u,v,w-----Velocity component; p-----Pressure; ----- Dynamic viscosity; （i＝x，y，z）-----Source term for all directions. 2.2 The simulation process Ø Modeling（Solidworks） Ø Model meshing（ICEM） Ø Simulation computation（CFD－ACE） Ø After-treatment process simulation（CFD－VIEW） Ø Data analysis and treatment The detailed flow as follow: Start ICEM makes the meshing document Set parameters, ACE+ computation Divergence?
Treatment, analysis Over Y Y 3 Simulation result and analysis 3.1 Test condition Under no change of other terms, the flow field changing in the reaction chamber was studied for different nozzle structures, and the nozzle structure parameters were set finally.

The k-ε two-equation turbulence model is used in the numerical simulation by FLUENT.
The development of CFD (Computational Fluid Dynamics) offers a possible means to substitute wind tunnel test[5].
The numerical simulaton uses CFD method to simulate the ambient airflow distribution when airflow comes by bridge structure.
The k-ε two-equation turbulence model is used in the numerical simulation taking account of turbulence effect.
The Reynolds number effects of three component coefficients of bridge deck section using CFD.

With the rapid development of computer technology, computational heat transfer and computational fluid dynamics (CFD) have improved steadily.
In order to facilitate the simulation, a cuboid is taken as the research space.
Initial conditions and simulation parameters are shown in Table 1.
By simulation, the relationship between velocity and outlet temperature of smoke and water is shown in Fig. 4 and Fig. 5 respectively.
With the simulation results, experiment can be taken to delve into the characters of fluidized-bed heat exchanger.

The simulation adopted a fully turbulent flow, having Reynolds number of 600 and the spinning of the cylinder at 100 RPM.
Computational Approach I.1 A computational fluid dynamic (CFD) code ANSYS 14 FLUENT TM is used to simulate the flow field.
A computational fluid dynamic (CFD) code ANSYS 14 FLUENT TM is used to obtain lift coefficient of the rotating cylinder.
The total of mesh is about 5000 mesh for a 2D simulation; Meshes are concentrated near to the model surfaces to increase the accuracy of the simulation Validation.
All simulation is performed with Reynolds number around 600 and the cylinder spinning at 100 RPM.

But it also brings a series of problems in urgent need of further study, such as the CFD analysis of the ECID as well as its impact on the movement of gas mixture.
The quality of grid will directly influence the CFD simulation process and is essential for the transient simulation.
(a) (b) Fig. 3 a) Grid for the static simulation b) Grid for the transient simulation Boundary Conditions.
Static Simulation Results and Analysis Through the static simulation, we can study the flowing features of the ECID.
Sopian: Multi-objective Optimization of Combustion Process in a Compressed Natural Gas Direct Injection Engine using Coupled Code of CFD and Genetic Algorithm (SAE Press, USA 2007)

Numerical simulation for solid–liquid two-phase flow in stirred vanadium leaching tank Kong Jian-yi a ,Wu Zong-wu b ,Hou Yu c ,Wang Xing-dong d Wuhan University of Science and Technology, Wuhan, 430081, PR China a 13607158659@139.com ,b15971432396@163.com , c249732412 @qq.com, d442309012 @qq.com Keywords: leaching tank;solid-liquid two-phase flow;turbulence;turbulent kinetic energy Abstract.The flow field in the leaching tank for the vanadium extraction in the stone coal was simulated by the Computational Fluid Dynamics (CFD) software.
The simulation results have certain reference value for the research of the law of the inner flow field so as to optimize its structure in the stirred reaction vessel.
The stirring speed is 100 r/min in this simulation.
Fig.2 Mesh Graph Numerical Simulation Strategy Simulation Method.The Reynolds Number in the stirred tank was calculated by the formula “”.
[2] Wang Fu jun.Computational fluid dynamics analysis-Principle and application of CFD software[M].Beijing:Tsinghua University Press,2004 [3] Zhu Rong sheng,Li Wei bing,Huang Dao jian,etal.Numerical simulation of mixing flow field in the blender[J].

Simulation and Analysis of the Temperature Rising for Cylindrical Power Batteries LIANG Peng1,a, LI Maode1,b 1College of Mechanical Engineering, Tongji University 4800 Cao-an Road, Shanghai 201804, China aliangpengtj@hotmail.com, blimaode@tongji.edu.cn Keywords: power battery, temperature rise, internal resistance, simulation Abstract.
By carrying out necessary experiments and using CFD simulation tool we get a better battery temperature rising curve and contour of internal temperature distribution under different operating conditions.
To adjust the internal heating rate according to the fitting curves above, the user-defined function (UDF) built in CFD simulation tool FLUENT can be activated to help.
TEMPERATURE RISING SMULATION By using CFD simulation tool FLUENT we simulate the battery transient heat transfer process and get a set of temperature profiles at the center of the battery under different discharge rates(1.0C, 2.0C, 4.0C) and heat dissipation conditions(h =5 W/m2·K, 15 W/m2·K, 30 W/m2·K), and suppose batteries are fully charged at initial state.
Variation trend of internal resistance is observed and implemented into simulation.

In 2005, S.H.Noie[2] indicated that the lowest effectivenessof heat exchanger would avoid the heat capacity rate equal to 1 according to simulation and experimental results.
Therefore, the case 3 was selected in the following simulations that to reducing computing time.
Fins pitch is the minimum impact parameter in this simulations (about 1%), because increasing pitch would reduce turbulent intensity in the heat exchange process.
Ponnusamy, “Effectiveness charts for counter flow corrugated plate heat exchanger,” Simulation Modelling Practice and Theory, Vol. 19, (2011), pp. 777-784
Subramanian, “CFD Modeling of Compact Offset Strip-Fin High Temperature Heat Exchanger,” University of Nevada, Las Vegas, (2005)

In this study, to improve the machining efficiency (processing time) by using end mill, a prototype of end mill with internal coolant nozzles (both rake side and flank side) was designed and CFD (Computational Fluid Dynamics) simulations were conducted to find out the relatively effective coolant supply method for coolant penetrating in cutting zone of flank face mainly.
Coolant nozzle outlet CFD Simulations The simulations were completed by MSC Cradle.
In the future research, CFD simulation will be conducted with molecular scale coolant as in cutting experiments coolant was sprayed out into mist instead of liquid.
Data acquisition location Fig. 9 shows the simulation results on data point 2 in Fig. 8(a).
Results of CFD simulations Cutting Experiments The cutting experiments were conducted to verify the real effect of UHPC in the cutting of Ti-6Al-4V.

MIXTURE OF PARTICLES’ INFLUENCE IN COMPUTER SIMULATIONS OF A SPOUTED BED D.
João Naves de Ávila, 2121, Bloco 1K, Campus Santa Mônica, Uberlândia - MG, CEP 38408-100 aclaudiofequfu@gmail.com Keywords: spouted bed, CFD, particle mixture Abstract.
Studies of numerical simulation techniques and computational fluid dynamics (CFD) have become popular in the field of gas-solid two-phase flow.
Table 1-Simulation conditions.
Rahimi: CFD Simulation of Gas-Solid Flow in a Spouted Bed with a Non-Porous Draft Tube, Chemical Engineering and Processing: Process Intensification, In Press, Available online 23 September 2009