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Flow Pattern and Efficiency Changes of Squirrel Cage Fans due to Inlet Diffuser Diameter Changes - Using CFD Method and Experimental Validation Mojtaba Gholamiana, Gurram Krishna Mohan Rao and Panitapu Bhramara Department of Mechanical Engineering JNTUH, College of Engineering, Hyderabad, India agholamian.mojtaba@yahoo.com, bkmrgurram@jntuh.ac.in, c bhramara74@yahoo.com Key Words: Squirrel Cage Fan, Forward Blade, Diffuser Inlet, Flow pattern and Efficiency, Numerical Simulation Abstract.
Recently using the CFD calculation methods with sufficient related tools for finding the flow pattern and related parameters, applying modifications and representing proper solutions, has being increased.
A modern approach for finding out the flow pattern and properties, that recently has got a popular method, is use of CFD method with appropriate tools.
Simulation Fan Geometry and Mesh Generation.
[8] Bhzadmehr, A., Mercadier, Y., Galanis, N., Sensitivity Analysis of Entrance Design Parameters of a Backward-Inclined Centrifugal Fan Using DOE Method and CFD Calculations, J.

Numerical simulation results indicate that using RANS equations can better forecast hydrodynamic performance of catamaran planing vessel at high speed, which provides a practicable numerical method for optimization design of the catamaran planing vessel’s hull.
Introduction Numerical simulation is becoming a common way for assessment of ship performance in the early design stages,especially in the case of high—speed vessels .Restrictions in simulation and data probing, expenses and scale effects of experimental analysis are good reasons to employ a numerical tool as a part of ship design procedure.In 2003 Azcueta etc [1] numerically simulate a high speed planing vessel (Fn = 4).
In this paper, a numerical prediction method of resistance performance of catamaran planing vessels is discussed based on the CFD technology.
Steady and Unsteady RANSE Simulations For Planing Rafts.2003
Practical CFD Simulations for Planing Hulls .2007

Numerical Simulation and Analysis of Low Hysteresis Brush Seals Jiadong Chi1, a, Zhili Wang1,a and Like Li1,a 1School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, China ajarod_chi@163.com Keywords: brush seal; CFD; aerodynamic force; contact force; bristle deflection; size parameter Abstract.
Lelli and Chew [8.9] combined the CFD model with a mechanical model and obtained bristle deflections in the axial-radial plane.
In this paper,used the anisotropic porous medium model, computed by CFD soft FLUENT,the velocity field and the real aerodynamic loads on each node of the bristles are available.
CFD Model The bristles are regarded as porous medium.
Huang: Low Hysteresis brush seal numerical simulations, Journal of Beijing University of Aeronautics and Astronautics, 34(9), (2008), pp. 1080-1083

The crystallization process of potassium chloride was simulated by CFD and MATLAB.
The fluid dynamics information of multi-phase flow are usually obtained by CFD simulation, so the fluid dynamics model are usually solved on the basis of finite volumes (CFD grids) [7].
The fluid dynamics information can be obtained by CFD simulation.
Simulation results The simulation is carried out in the multi-phase model to obtain the fluid dynamics information by CFX software.
The results of CFD simulation showing the distribution of the suspended crystal volume fraction are based on certain average crystal volume faction of the crystallizer.

In recent years, computational fluid dynamics (CFD) simulation have become popular in membrane separation simulation.
A CFD study of unsteady flow in narrow spacer-filled channels for spiral-wound membrane modules.
CFD simulation of fluid flow through spacer-filled membrane Module: selecting suitable cell types for periodic boundary conditions.
And a three-dimensional CFD simulation was performed to study the velocity distribution in flow channel of the membrane module, and the effect of face permeability, porous medium thickness, and pressure-jump coefficient of porous-jump model on membrane flux.
Membrane parameters setting Fluent software was used to CFD for the simulation of the velocity distribution in flow channel of the membrane module, and the effect of face permeability, porous medium thickness, and pressure-jump coefficient of porous-jump model on membrane flux were investigated.

The flow characteristics in mini/micro sonic nozzles have been studied in this paper using the computational fluid dynamics (CFD) method.
Using the CFD method to simulation the flow field parameters and flow rate in nozzles.
Simulation and Discussion Nozzle Geometries and Computational Method.
Simulation model of nozzles(3-D) Numerical simulation used k-e turbulence model in software fluent 6.1.
Conclusions Nine group simulation experiments have been studied in this paper using the computational fluid dynamics(CFD)method.

Focus of the investigation was on an ammonia-water absorption chiller for medium temperature food refrigeration with cooling capacity 12.8 kW involving simulation on the modification of test facility using CFD-Fluent software (CFD = Computational Fluid Dynamics), numerical simulation of solar energy applied on the system, environmental impact and economical aspect analyses.
Simulation of a parabolic trough collector, only direct radiation was considered.
The value of this parameter was obtained from the CFD simulation of 1.81 GJ/day.
Another parameter is average daily amount of heat transfer fluid circulated to the chiller which has been calculated by using the optimum mass flow rate from CFD simulation of 0.9 kg/s (77,760 kg/day).
This temperature, simulated in CFD, was found to be 180oC.

Computational fluid dynamics (CFD) is presented as an important tool in solving problems involving the dispersion of chemicals into the atmosphere.
This study was conducted by means of numerical simulations using the commercial package ANSYS CFX®.
Geometry and mesh For the generation of the structured mesh, or computational domain, representing the physical domain of study, the ICEM-CFD software was used.
Figure 3: Mesh used in the simulations, highlighting the input area and the chimney.
The structured mesh was made using the ICEM CFD software, which consists of 228,000 control volumes.

Seal System Optimization Study of an On-off Valve based on CFD Hu Xiaodong, Gong Quanshuai, Gong Lixiao, LvJiantao College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266510 huxdd@sohu.com Keywords: out-off valve; seal plate; computational fluid dynamics Abstract.
The dynamical performances of mixed gas in the out-off valve which is used in the PSA have been studied in this paper to explore the reasons of irrational failure of seal gasket with the material of Teflon and the method of CFD.
This simplification would make the actual flow rate higher than the simulation.
Fluid Dynamics Analysis The distribution rules of fluid dynamics performances in Out-off valves have been obtained with the procedure of modeling, meshing, boundary conditions simplification, mathematical model chosen, simulation computation and date post-processing.
CFD analysis and optimization of automotive air-conditioning duct system.

Non-Newtonian Computational Fluid Dynamics (CFD) Modelling on Left Coronary Artery with Multiple Blockages K.M.
This paper provides an analytical study on the variation of static pressure with multiple blockages in the artery implementing the conventional simulation software.
Introduction The objective of this paper is to analyse the various parameters indispensable to the proper functioning of the heart using CFD analysis.
Ganesh Kamath, “FSI Simulation of Common Carotid under Normal and High Blood Pressures”.2012 [6] Barbara M.
Johnston, Stuart Corney, David Kilpatrick, “Non-Newtonian blood flow in human right coronary arteries: Transient simulations”.