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Numerical Simulation of the Influence of Outer Chamber Height on Flow Field in Circumfluent Cyclone Separator Jihai Duan 1,a, Xingxing Guan 2,b College of Chemical Engineering, Qingdao University of Science and Technology, No.53 Zhengzhou Rode, Qingdao, China, 266042 aduanjihai@yahoo.com, bgxx708@163.com Keywords: circumfluent cyclone; outer chamber; numerical simulation; pressure drop Abstract.
In this study, the gas flow filed in CFCs of different outer chamber heights were simulated by CFD software (FLUENT 6.2).The calculations could improve our knowledge about the effect of outer chamber structure in CFCs and provide some fundamentals for further research of CFC performance.
Fig.1 CFC configuration and grids Results and discussion Fig.2 presented the comparison of CFD simulation and experiment data of separation efficiency for CFC.
The numerical simulation results of CFC are in good agreement with the experimental data at different particle sizes.
As can be seen from this figure, although the simulation values are different, the tangential velocity profiles are nearly identical in the three CFCs.

Thus, in this paper, to investigate the effects of the VGs’ installation angle on airfoils, numerical simulations are conducted by CFD on the finite wing of NACA0012.
According to the finite airfoil with or without VGs, three-dimensional models are established and numerical simulations are carried out in detail.
Parameters value 4 20 40 10 1 0~90 Simulation Method Calculating Model.
Conclusions In this paper, the three-dimensional model with and without VGs are investigated by CFD to analyze the effects of the VGs’ installation angle on a finite wing of NACA 0012.
These simulation results above are of great importance for active control of the wind turbines or wing of the planes.

Venkatraman, "Numerical Simulation of Incompressible Viscous Flow Past a Heaving Airfoil," Int.
Eighth Annual CFD Symposium, CFD Division of Aeronautical Society of India, Bangalore, August 11-13, CP 18, 2005
Ninth Annual CFD Symposium, CFD Division of Aeronautical Society of India, Bangalore, August 11-12, CP13, 2006
Eighth Annual CFD Symposium, CFD Division of Aeronautical Society of India, Bangalore, CP 18, 11th - 13th August, 2005
K., “Viscous Unsteady Flow Around a Helicopter Rotor Blade in Forward Flight”, Proc., 9th Annual CFD symposium, CFD Division of Aeronautical Society of India, Bangalore, 11th - 12th August, 2006

Accurate prediction of flow field for such problem using computational fluid dynamics (CFD) is becoming increasing significant.
The techniques of CFD, such as large eddy simulation (LES), Reynolds averaged Navier-Stokes equations (RANS) model etc., have been widely used to predict flows around bluff bodies in wind engineering.
Numerical methods A commercial computational fluid dynamics (CFD) code, ANSYS FLUENT, was used to perform present numerical simulations.
The above observations are well captured in present simulation as shown in Fig. 7(a).
Therefore, the wind-tunnel experiments and CFD can be used in synergy in practical wind engineering problems.

As a heavily compute-intensive operation, the direct numerical simulation of viscoelastic fluid flows in large-scale industrial applications presents tremendous challenges for not only the modeling but also the framework of numerical simulations.
Fortunately, the explosive growth of high performance computing provides new opportunities for this kind of numerical simulation in recent years.
The numerical solver of viscoelastic fluid flows could be parallelized and extended to thousands of cores on large-scale HPC platforms with open source CFD frameworks, such as OpenFOAM, or commercial CFD frameworks, such as CFX/ANSYS, PHOENICS and STAR-CD, to obtain considerable speedup compared with the serial solver.
simulation.
Optimization Strategies As can be seen above, the abstract top level interface in OpenFOAM framework facilitates the programming and parallelization of viscoelastic fluid flow solvers, and fostered its wide acceptance in CFD community.

The simulation is carried out to study the influence of different temperature and doping levels on the electrochemical performance of the cell.
The geometry used in simulation is shown in Fig. 1b and the dimensions are mentioned in Table 1.
Fig 2 (a) Comparison of model and experimental results (b) effect of temperature on performance (c) effect of doping level on performance Results and Discussions At first, the model is validated and then used for further simulations.
CFD modelling is also useful in prediction of quantities which cannot be measured in-situ such spatial distribution of species mass fraction as shown in Fig. 3(a-c).
The current work uses CFD modelling to stress the importance of choosing optimum operational conditions and effective material properties for achieving good performance.

With the large eddy simulation method, unsteady flow of a single six-blade ruston turbine in stirred tank is numerically simulated and analyzed using CFD software FLUENT.
Large eddy simulation uses the unsteady solution method.
Large eddy simulation is the method between direct numerical simulation (DNS) and Reynolds Averaged Navier-Stokes (RANS).
CFD study of homogenization with dual Rushton turbines: Comparison with experimental results, J.
Large eddy simulations on the flow driven by a Rushton turbine, J.

Numerical Simulation of Vortex-induced Vibration for Two Circular Cylinder in Tandem Arrangement Jing Zhao 1,a , Haiyan Guo1,b and Xiaomin Li1,c 1 College of Engineering, Ocean University of China, Qingdao, Shandong, 266100, China amirror830@163.com, bhyguo@ouc.edu.cn, clixiaomin0318@163.com, Keywords: CFD; two cylinders; tandem arrangement; vortex-induced vibration; a single and two degrees of freedom.
The results of numerical simulation for a single cylinder by the present method are observed close to the data of experiment.
Besides, other researchers using computational method, and some of these people are trying to solve the FSI problems by coupling computational fluid dynamics (CFD) and computational structural dynamics (CSD).
Murakami[4] extended large eddy simulation to conduct the cases of the flow past out an oscillating 2D square cylinder at cross-flow.
Conclusions In this paper, the vortex-induced vibration of a single and two cylinders separated by 5.5D in tandem arrangement is studied numerically by using CFD and CSD together.

The simulation results suggest that the maximal value of electric current density lies in the neck of droplets, and the electromagnetic force has great effects of accelerating droplets' contraction and shortening their falling time.
In the 90's, the VOF (volume of fraction) theory [7-12], which was based on CFD, was put forward to illustrate droplet's kinetic behaviors.
VOF model was established on basis of CFD theory, which could be easily merged into solving the heat and flow equations.
The simulation was performed by solving a set of CFD and Electromagnetic equations with FEM method.
Mathematical Modeling CFD and Electromagnetic equations are the foundations of simulating the droplet dynamics, including Continuity equation, Momentum equations, Energy Equations, VOF and CSF Equations and Electromagnetic Equations.

In order to improve the life of tuyere, the flow fleld and temperature field of tuyere were simulated by using computational fluid dynamics (CFD).
Simulation results show that the maximum temperature appears at the front margin of tuyere outlet side.
This text employs CFD to describe flow field and temperature field of water-cooling BF tuyere, and analysises temperature distribution in different water-presure.
Simulation results and analysis Field and temperature field of water cooling tuyere BF tuyere velocity vector and the temperature field were calculated with changing inlet pressure from 0.1 to 1.0 MPa.
Numerieal Simulation of Temperature Field and Stress Field in the Tuyere[D].