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CFD analysis of early diaphragm removal in expansion tubes James M.
An inviscid, axisymmetric model was created using Eilmer3, a compressible CFD solver developed at the University of Queensland.
One-dimensional CFD Analysis Simulations using the L1d code ran into a fundamental problem in accurately simulating early opening.
This model was then used for early diaphragm removal simulations, but the non-physical variations in temperature history were observed again.
Two-dimensional CFD Analysis Wave and Property Results.

Study and Investigation on the Mach of Impeller Outlet and Diffuser Inlet in Stamping and Welding Centrifugal Pump GAN Jianjun 1,a, MOU Jiegang 2,b, ZHENG Shuihua3,c, ZHU Bo4,d 1 College of Mechanical Engineering Zhejiang University of Technology, Hangzhou, Zhejiang, China 2 College of Mechanical Engineering Zhejiang University of Technology, Hangzhou, Zhejiang, China 3 College of Mechanical Engineering Zhejiang University of Technology, Hangzhou, Zhejiang, China 4College of Mechanical Engineering Zhejiang University of Technology, Hangzhou, Zhejiang, China aganlet@163.com, bmjg1963@126.com, czneu@zjut.edu.cn, dzhubo363@163.com Keywords: Stamping and welding centrifugal pump; Impeller outlet; Diffuser inlet; Numerical simulation; Hydraulic performance Abstract: Based on CFD simulations and experimental research, this paper studied the mach of impeller outlet and diffuser inlet in stamping and welding centrifugal pump.
Based on CFD simulations and experimental research, the influence of the mach of impeller outlet and diffuser inlet on stamping and welding centrifugal pump internal flow characteristics and performance were studied.
Computational Methods and Simulation Results Analysis Assume that fluid in the centrifugal pump internal flow constantly.
Experimental investigation Typical prototypes are manufactured and tested to verify the reliability of numerical simulation.
Tab.3 Experiment and simulation results of two prototypes Y=3.49 Y=2.00 performance parameter tested simulated tested simulated P/KW 0.184 0.179 0.182 0.181 H/m 8.189 8.458 7.952 8.203 /% 50.23 48.44 48.61 46.86 Simulation results are corrected according to the formula provided by literatures [6].Comparing the numerical simulation results and test results，under design conditions, results of numerical simulation agrees well with that of testing, the maximum deviation of head is less than 5%, and the deviation of efficiency is also very low.

And it has been successfully applied to numerical simulations of two dimensional airfoil aerodynamics [6]. 2.5 Boundary conditions representation Initializing water pressure is 4MPa, the temperature 20oC, and flow rate of the inlet and outlet is 15Kg/s.
Numerical process visualization With commercial computational fluid dynamic (CFD) software Fluent, the temperature contour from combustion inside of the heater is shown in figure 3.
Conclusion In this paper, the fluid-solid-heat coupling heat transfer is analyzed by using finite element method and CFD method.
Reliability on CFD estimation for wind–structure interaction problems.
Numerical aerodynamic simulations of a NACA airfoil using CFD with block-iterative coupling and turbulence modelling.

Numerical Simulation and Optimization of Small low-speed Wind Tunnel Contraction flow Jinsheng Liu Department of Aviation, Xiamen University, Xiamen 361005, China Keywords: Wind tunnel design contraction curve; fluid dynamic simulation; Fluent.
Using commercial Computational Fluid Dynamics (CFD) software-Fluent: Fluent.
Different curve contraction sections of numerical simulation and comparison Calculation model.
CFD computational fluid dynamics analysis software Principles and Applications [M].
FLUENT fluid engineering simulation [M].

With the aid of Computational Fluid Dynamics(CFD) software FLUENT and Re-development by visual C++, the important plasma parameters of low current vacuum arc , such as axial current density , ion temperature, electron temperature, mach number, were analyzed.
The simulation results shown that the distribution of plasma parameters is consistent with that of the 2D axis-symmetric model.
Therefore, modeling and simulation of vacuum arc is the important method for the research on vacuum arc.
“MHD model and simulation research of vacuum arc,” Proceedings of the CSEE,vol.25(4), pp.113-118, February 2005
[5] F.Wang.Computional Fluid Dynamics Analysis-Principle and Application of CFD Software.Beijing:Tsinghua University Press, 2004.

In this paper, the method of balancing the axial force with balance hole is studied based on the combination of CFD and experimental research.
Simulation Settings.
Selecting separation solver for simulation, assuming steady flow in centrifugal pumps.
The test the value of axial force is a little larger than numerical simulation, due to the simulation process in a better state, and the measurement process in test may have deviation.
Performance Prediction of Centrifugal Pump Based on the Method of Numerical Simulation [J].

The engine with known specification is being modeled using one dimension CFD GT-Power software.
A study of computational method to simulate a four stroke single cylinder direct injection diesel engine has been performed using one dimension CFD GT-Power software.
Indicated torque by simulation is shown in Fig. 3.
Fig. 4 shows the indicated specific fuel consumption result for simulation.
Indicated mean effective pressure result for simulation is shown in Fig. 4.

Numerical Simulation of Flow Field in Burnt Lime Hydrator Minghua Bai, Yu Zhang and Qiufang Wang College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, China zhangyu1985725@163.com Keywords: burnt lime hydrator; numerical simulation; stirring shaft; blade Abstract.
The schematic diagram of slaker Conditions of Simulation Assumptions.
The level of mesh density has significant influence on the computing time and accuracy of the simulation results[5].
Wang, “Computational Fluid Dynamics Analysis-the management and application of CFD software,” BeingJing: Tsinghua University Press, 2004
Wan, “Finite Element Analysis of Stand Center Blender Based on Its CFD Numerical Simulation,” Oil Field Equipment, Vol. 37 No. 8, 2008, pp.52-55

The k-ω Shear Stress Transmission (SST) turbulence model was selected for CFD calculation.
By comparing the result computed by XFOIL and CFD calculation, it can be known this airfoil’s sensitive locations in suction surface and pressure surface.
It chose the FFA-W3-211 as the simulation object, which can get the experimental data from [5].
(use the same parameter values in simulation).
To improve the accuracy of simulation, the computational zone is extended to 20m (shown in Fig 2).

Investigation and Simulation of Supersonic Gas Jet for Martian Dust Removal Zhenlin Wanga, Heng Xub, Ruiqiang Yangc, Wenjin Guod Lanzhou Institute of Physics, Lanzhou, 730000, China awangzhenlin1979@gmail.com, b1832635634@qq.com, cyangruo@sina.com, dguowj2006@sina.cn Keywords: Gas Dynamics; CFD; Supersonic Gas Jet; Laval Nozzle; Martian Dust Removal.
The distribution of flow fluid field is obtained by CFD method.
Some valuable results are obtained by 5×5 matrix simulations and analyses.
Simulation of Flow Fluid Field.
Verification experiments according to the simulation results are the next work.