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Merati et al. [5] predicted the turbulence flow field in a seal chamber by using FLUENT, a commercial software package for computational fluid dynamic (CFD) analysis.
Numerical simulations The N-S equations and the energy equations are coupled through the viscosity – a nonlinear function given in Eqs. (11).
Validation According to the numerical simulation results, the structures and operation parameters of the mechanical seal are optimized, and the optimizations are verified by the running tests: the mechanical seal is seted up in the equipment, running 30min, velocity 60000rpm, medium fluid water.
According to the simulation results, the structures and parameters of mechanical seal are improved, and the validity of the optimization is proved by test.
Numerical simulations of the flow field around the rings of mechanical seals.

Numerical simulation of characteristics of cross-flow heat transfer in pulsating flow LI Guoneng College of light industry, Zhejiang University of science & technology, Hangzhou, China E-mail: gnlene@163.com Keywords: heat transfer; pulsating flow; computational flow dynamics.
The resolution of computational grid is about 320,000 with emphasis near the wall. 80 mm 76 mm 1000 mm water inlet water inlet pulsating air inlet x y Fig. 1 Sketch map of the structure of cross-flow heat exchange pipe All simulations were carried out based on the CFD code FLUENT 6.3, which solves the conservation equations of mass, momentum and energy based on the finite difference method.

A spectral element method for the numerical simulation of axisymmetric flow in Czochralski crystal growth Zhouhua Qiu1, a, Zhong Zeng1, 2, b, Huan Mei1, Liping Yao, Qiuming Liu 1 Department of Engineering Mechanics, College of Resources and Environmental Science, Chongqing University, Chongqing 400044, PR China 2 State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China aqiuzhouhua@cqu.edu.cn, bzzeng@cqu.edu.cn Keywords: spectral element method; Czochralski growth; axisymmetric flow; Gauss-Radau Abstract.
The simulation of Wheeler’s problem is chosen as a test case to validate the new method and four cases are considered, which are defined as follows A: ReX=100, ReC=0, Gr=0.
Sherwin, Spectral/hp Element Methods for CFD, Oxford University Press, London, 1999

Abstract：The current flow and pressure drop of ER valve which is a new type power control valve could be adjusted by the electric field signal directly .In this paper, the fluid power control performance of concentric cylindrical ER valve and parallel plate-type ER valve based on ER principal is comparative studied .First power control equation has been analysed, and then flow simulation of internal flow field of ER valve has been taken based on FLUENT software.
Comparartion of the simulation results The effects of the electric flied intensity on the flow rate of the ER valve Utilizing the pre-processing software GAMBIT of the FLUENT to build a 3D model and meshing for the internal flow field of the two type of ER valves .because of.
Actually, the internal flow field of the ER valve is complex 3 d fluid movement, during the simulation processing, assumptions and setups have been made for the ER valve as follow: 1.Assuming that the ER fluid is uncompressionable and accords with the non-newtonian fluid with HB parameters; 2 Ignoring the effects of temperature on the fluid flied and taking the flow state as a laminar.
[8] S.M.chen,W.A.bullough CFD study of the flow in a radial cluth with a real electrorheological fluid.journal of physics:conference series,2009,149(4)1742-1751

A dynamic simulation of the steel frame subjected to a blast load was analyzed under such a temperature field.
This equation is got from CFD model (also referred to as field models) by Prof.

Monitoring data from all the sites were used to set initial and boundary conditions for the numerical simulations, and validate the numerical model.
A wide range of practical applications based on FLOW-3D had verified its feasibility and simulation accuracy.
In fact, it was the only commercially available CFD program that fully implements Hirt and Nichols’ (1981) volume-of-fluid (VOF) method for the computation of free-surface flows [18-20].
The horizontal velocity field simulation results in figure 7 displayed the same situation as those in figure 6.
Horizontal velocity field simulation results for the estuary of Xiangxi River in May. 16, 2010 (Positive values indicate flow into the Xiangxi River and negative values indicate flow out of the Xiangxi River.).

The simulation was carried out at inlet oxygen fraction of 8% and a preheated air temperature of 1273 K for natural gas.
The commercial CFD code FLUENT6.3 was used to carry out the calculation.

., P.O.B. 49377, Petach-Ticva, Israel aradune@ariel.ac.il, balex@innodraw.com, cassous@ariel.ac.il, dzinigrad@ariel.ac.il Keywords: Mathematical modeling; simulation convection; diffusion; desulfurization; metal-slag interface.
Shultz: Simulation of thermodynamic properties of slag melts, Proceedings of the 4th Molten Slags and Fluxes(International Conference, Sendai,Japan1992), p. 120 [4] M.
Conf. on CFD in the Miner.& Process Ind.

Modeling setting 2.1 Meshing According the simulation, it has to reduce the effect of regional boundary to the simulation results.
Generally, increasing the computational domain can increase the accuracy of the simulation, but larger simulation area leads to more time-consuming calculation.
Conclusion This paper takes simulation buildings as the research object and NO, CO and H2 of automobile exhaust as the main pollutants, and using numerical simulation to calculate the buildings’ wind field in different direction and pollutant diffusion.
(4)The simulation results of different wind direction shows that the ventilation effect of the community is good when the crossing angle of wind direction and the inflow surface is 45 degrees, and the diffusion effect is better too.
Zhang, Modeling near-road air quality using a computational fluid dynamics model, CFD-VIT-RIT.

Therefore, this paper summarizes results of previous studies, using CFD numerical simulation to make non-steady state characteristics study on reactor coolant pumps transient variation of blade load, radial force and axial force of impellers, guide vanes and the volute in the transition process from design conditions to 0.7Q small-flow condition and design conditions to 1.2Q condition, aiming at providing a basic reference for structure, hydraulic and process design of reactor coolant pumps.
Numerical Simulation 2.1 Calculating Model and Mesh Generation In this paper the calculation model is the improved AP1000 reactor coolant pump and conveying medium is clear water.
Steady flow convergence is the unsteady simulation initial condition.
Simulations and field tests of a reactor coolant pump emergency start-up by means of remote gas units [J], Transactions on Energy Conversion, 1992, 7( 4):691-697
Analysis and Numeric Simulation of Off-design Flow Field in Centrifugal Pump [J].