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The governing partial differential equations of continuity and momentum were dicretised to algebraic equations by using CFD commercial code(FLUENT 6.3).
In the numerical work, CFD commercial code(FLUENT 6.3) using sliding mesh techniques was used to obtain the results.
,B.V.,1992“Pressure Fluctuation Numerical Simulation in a Centrifugal Pump Volute Casing,” Colloque C1, supplement au Journal de Physique III, Volume 2,PP.619-622
H., and Zhao, Z.M. , 2007, “Numerical Flow Simulation in a Centrifugal Pump at Design and Off-Design Conditions” International Journal of Rotating Machinery, Article ID 83641, 8 pages.

Base on the model, the simulation was carried out at the experimental condition of Su et al. (1995).
But unlike normal bubbly flow, the vortex region below the cavity contain extremely high void fraction which may cause challenge for simulation.
In the vortex region, the simulation result is noticed to under-predict the void fraction in the area near the pipe centerline.
This may be caused by the phenomena of bubbles re-entrained into the cavity which is ignored in the simulation model.
Simulation results was found out to under-predict the Sauter mean bubble diameter in the pipe flow region for about 10%.

Before performing simulations on the main case decompression tank then first performed by grid independent test to validate the simulation results from the study by another researcher.
Thus, the simulation is correct and feasible to carry out simulations with different variations of compressibility.
This proves that the step from the simulation is already appropriately so worthy to be used for simulation study. 2.
CFD Simulation of Subcooled Flow Boiling using OpenFOAM.
Two phase pipe flow simulations with OpenFOAM.

Numerical simulations of physical phenomena regarding the Fluid- Structure Interaction are topics of several research projects.
Using the explicit monolithic FSI-simulation within ANSYS CFX a bidirectional transient coupling with the ANSYS multiphysics solver was evaluated.
Results of the fluid dynamic simulations have been correlated with simulation of structural mechanics.
`CSM´ displays the resulting deformation of the fibre fabric depending on the fluid flow (row `CFD´).
CFD CSM Fig. 8.

CFD method has been used widely in the researches on the flow characteristic of airflow origination.
A numerical simulation was performed on characteristics of airflow origination in CRH2 EMU, adopting the method of LES with 10 PCs parallel operations in this article.
Simulation Method of LES Adopting filtering operations for incompressible N-S equations , quality equations and energy equation ,Eq.1 can be reached
In order to improve the accuracy of the simulation, the method of extended calculation boundary is used, the revised balance layer model is used for wall-function.
[5] Grotzbach: Direct Numerical and Large Eddy Simulation of Turbulent Channel Flows.

Sureshkumar et al. [3,4] studied the heat and mass transfer process between a water spray and ambient air by experiment and simulation.
Talukdar et al. [8] performed the convective heat and mass transfer between water surface and humid air flowing in a horizontal 3D rectangular duct by CFD simulation.
Simulations, Applied Thermal Engineering Vol.28 (2008), p.361-371
J.Simonson: Combined heat and mass transfer for laminar flow of humid air in a 3D rectangular duct: CFD simulation and validation with experimental data, International Journal of Heat and Mass Transfer Vol.51 (2008), p.3091–3102

Based on the operating characteristics of a micro HCCI (Homogeneous Charge Compress Ignition) free-piston engine, a multidimensional model which coupled CFD code, chemical dynamic model and piston dynamic model has been established.
Meanwhile, working characteristics of micro engine generator are evaluated by employing the simulation result.
Simulation result provides essential requirements for micro free-piston engine control and design.
Assuming the flow of combustible gas in the clearance as a quasi-one-dimensional isentropic flow and for a certain component, its leakage mass is expressed as: (5) Simulation results analysis Simulation of ignition process.
To invest micro engine performance with different fuels, simulations of fuel to be methane, propane and hydrogen respectively are compared.

For the study of atmospheric diffusion of particles, it has the following several aspects: Using high-speed photography technology to film in wind-tunnel test and then take data analysis [1]; Conduct a method combined the experimental research and numerical simulation to get movement parameters and velocity distribution function of particles under different working conditions[2]; And using CFD to simulate the migration distance and sphere of action of the radioactive particles in atmospheric area[3].
Also, it provides an effective method for how to set up safety protection distance in nearby tailings area through the simulation of radioactive operating range of tailing sand.
Zhou: Study on Numerical Simulation of Defending Effect of Windbreaks, China, (2001)
[7] J.M.Hu: Numerical Simulation and Application on Windbreak Controlling Granule Raised up at Stack, (2003), P5-46
Xie: Numerical Simulation of Atmospheric Migration of Uranium Tailings Grit Based on DPM, Hengyang, China, (2013), P96-100

Numerical Simulation of Internal Flow Field on Diesel Centrifugal Gas-Oil Separator Based on CFD Zhiguo Zhao, Wenming Yu HuaiYin Institute of Technology,Huai’an, Jiangsu,China, 223001 Lnzzg98@163.com Keywords: Diesel; Centrifugal Gas-oil Separator; Flow Field; Separation Efficiency.
The simulation results showed that the flow field in the disc clearance was mainly laminar flow, and the flow field at the import and export of the disc was turbulence.
The results of numerical simulation and analysis Velocity Cield According to figure 2, it is known that the gas enters from the entrance at the speed of 2m/s and the speed reaches the peak on the edge of disc through the high rotation acceleration of disc.
Fig.4 The turbulent kinetic energy distribution when t is 11 s Fig.5 The particle distribution Summary 1) Aiming at the low efficiency problem of the traditional gas-oil separator, this paper put forward a kind of centrifugal gas-oil separator and performed the numerical simulation of the interior fluid field character, and the interior fluid field character of centrifugal gas-oil separator was known well, which provided an important theoretical basis for the design and optimization of the centrifugal gas-oil separator. 2) The flow field in the disc clearance is main static flow, the disc import and export are turbulent area.
Demoulin, V.Daru, 2004, "Prediction of the Efficiency of an Automotive Oil Separator: Comparison of Numerical Simulations with Experiments", SAE technical papers series, 2004-01-3019,2004.

A Monte Carlo photon simulation method was utilized for the analysis of optical performance of LED in quantitative terms.
FLOTHERM includes computational fluid dynamics (CFD) solver, which carries out a full 3-D solution of the Navier-Stokes equations for mass, momentum and energy conservation using the finite volume technique [5].
As a boundary condition during thermal simulation, heat transfer coefficient is important to ensure the accuracy of simulation result [3].
In our simulation, heat transfer coefficient was calculated by FLOTHERM based on CFD.
Lee: Analysis of light-emitting diodes by Monte Carlo photon simulation, Appl.