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The different cone angle to separates the efficiency influence The hypothesis turns on lathe the air bleed fluid separator air inlet is 30mmx40mm, the overflow gate diameter is 30mm, uses same inlet velocity 20m/s, to the cone angle respectively be 10°, 15°, 20° three kind of different separators enters the simulation analysis, carries on the numerical simulation computation to the different taper under and the different size's bubble separation efficiency.
The different import size screws down the air bleed fluid separator numerical simulation research.
Regarding turns on lathe the air bleed fluid separator saying that was mad that the fluid import is an important structure, respectively turns on lathe the air bleed fluid separator to four kind of different import sizes to carry on the numerical simulation analysis computation, the import size respectively is 25mm×40mm, 30mm×40mm, 35mm×40mm, 40mm×40mm, the ppapersize is 0.2-9um, with uses same speed 20m/s.
The different overflow gate size screws down the air bleed fluid separator numerical simulation research Regarding turns on lathe the air bleed fluid separator saying that the gas overflow gate size is an important structure similarly, respectively turns on lathe the air bleed fluid separator to four kind of different size overflow gates to carry on the numerical simulation computation, the overflow gate size respectively is: 25mm, 30mm, 35mm, 40mm, the speed is 20m/s.
[6]Griffith WD，Boysan F．Computational fluid dynamics(CFD)and empirical modeling of the performance of a number of eydone samples[J]．J Aerosol Sei．1996，27(2)：28 1—304

Effect of the ignition time on the turbocharged lean-burned CNG engine Xiao Lu, Dawei Qu, Jianxi Pang, Jifei Lu State Key Laboratory of Automotive Simulation and Control,Jilin University Changchun, Jilin Province,China,130025 lxxiao66@163.com Keywords: Ignition time; emission; CNG engine Abstract.
Investigation on mixture formation and combustion process in a CNG-engine by using a fast response 3D-CFD-simulation[C].

Ji-Hang Luo [4] takes the rotor blades with three different parts of NACA airfoil as a reference, and uses the main model of commercially available NORDEX plant's N-50 800kW wind turbines as a simulation object.
By using of STAR-CD CFD software for simulation, he compares the wind power, flow and torque under different available wind speeds to find the better airfoil.
This feature is that the use of the wind turbine simulation model to establish the flow field domain model, simulate the operation of wind turbine rotor when the wind load.
In fact the wind machine in the load situation is very complicated, and the actual wind conditions and wind machines are non-stable, so in the simulation of this paper the ideal wind conditions are assumed.
[4] Jie-hang Lo，Numerical Simulation on a Horizontal-Axis Wind Turbine with various Rotor blades，National Taiwan University Technology Department of Mechanical Engineering, Master's thesis, 2006.

Therefore, in this paper XFOIL was used to design preliminary airfoil, and then CFD tools were used to optimize and validate the airfoil.
However, accurate derivate can only achieved from CFD or wind tunnel, which have the disadvantage of intensive-calculation, high-cost, long-cycle, and aren’t fit for using in general design.
Numerical simulation of laminar separation bubble over 2D airfoil at low Reynolds number.

CFD simulation of homogenization in large-scale crude oil storage tanks [J].
CFD calculations of gas leak dispersion and subsequent gas explosions: validation against ignited impinging hydrogen jet experiments [J].Journal of Hazardous Materials, 2010, 179 (1):84-94

The dimensions and inclination of air gap (chimney) and wind catcher are a subject of simulation to provide optimal effect for ventilation of individual room or the whole building, [5].
According CFD simulation the axial fan is best to be located in the top of wind tower providing better draw effect of fresh air flow and its direction through the tower`s channel in the indoor spaces.
Sustainable architectonical solutions which acts as integrated ones usually demands very complex and complicated approach during designing, optimally supported with simulations, such as CFD or daylight availability.

Computational Methodology The geometric modeling, by single passage approach with the assumption that flow is periodic in each impeller blade passage and grid generation of the computational domain is done by ANSYS ICEM CFD 13.0.
The numerical investigations are carried out using commercial CFD code, namely ANSYS CFX 13.0.
The reference pressure used for numerical simulation is 101.325 kPa.
The fluid used for simulation is air at 25oC.
The heat transfer model used for the simulation is total energy model.

The simulation of coating formation to estimate the process parameters is an important tool to develop new coating structures with defined properties.
In this work, the process of plasma sprayed coating has been analyzed by numerical simulation.
The first step in the process simulation is the plasma generation and subsequently the heat and momentum transfer from the plasma onto the particles.
So the next validation will confirm or not the performance of this code us a simulation tool for the plasma spray coating process. 5.
References [1] Liu H., Lavernia E., Rangel R., simulation of impingement of molten Ti, Ni and W droplets on a flat substrate >, J.

Sod (Shock Tube) [10] , a common test for the accuracy of CFD codes, is utilized to test the ability of Maccromack’s algorithm in solving the initial boundary value problem (IBVP) for the system of equations with shock wave behavior.
Table 1 Comparison between numerical results and experimental results Ballistic Parameter Experimental results Simulation results Maximum chamber pressure (MPa) 320.00 320.85 Muzzle velocity (m/s) 858 862.69 Conclusions In this work, the two-phase flow mathematical model for the solid granular propellant and its products of combustion inside large caliber NGGPS during interior ballistic cycle is described.
[6] Lowe C., CFD modeling of solid propellant ignition, PhD thesis, Cranfield University, Cranfield, (1996) [7] John D.

Elwekeel b and Qun Zheng c Harbin Engineering University, Harbin 150001, China aantar451@yahoo.com; bfifinew2000@yahoo.com; czhengqun@hrbeu.edu.cn Keywords: Gas turbine, Multi-trench, Film cooling, Adiabatic effectiveness, Jet interaction phenomena Abstract.In this study, computational simulations were made using ANSYS CFX to predict the improvements in film cooling performance with multi trench.
Simulation conditions are presented in Table 1.
Table 1 Simulation parameter conditions Configuration Dimensions Mainstream conditions Coolant conditions D 4.11 (mm) Tu 1% Tu 2% α 30º Λ/D 0.42 Λ/D 0.56 L/D 4.1 (with trenches) U∞ 30.82 (m/s) T 230.77 (K) P/D 2.775 T 300 (K) S/D 0.5 and 0.8 DR 1.3 W/D 4D and 2D M 0.5,1 ,2 and 3 Results In the present work, the center line and lateral average adiabatic film effectiveness were investigated at various operating conditions as shown in Table 1.
Fig. 5 Comparison of multi trench and narrow trench [3] Fig. 6 Spatially averaged adiabatic effectiveness for multi trench and narrow trench [3] Summary In this study, computational simulations were made using ANSYS CFX to predict the improvements in film cooling performance for multi trench configuration.
Bogard, in: CFD Predictions of Film Cooling Adiabatic Effectiveness for Cylindrical Holes Embedded in Narrow and Wide Transverse Trenches, ASME Paper GT2007-28005 (2007) [6] L.