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Computational Fluid Dynamics CFD, based on a finite volume method, is completed by utilizing the standard k-ε turbulence model.
In the present research, the simulations are performed using the commercial software ANSYS version 16.1.
It is found that the 126561-grid element is convenient for the CFD (less deviation).
The simulations are conducted to study the velocity and pressure distribution using three different twist ratios (y\w = 0.6, 0.7, and 1).
"Simulation of heat transfer in a tubular pipe using different twisted tape inserts".

This paper used different rotational speeds of the rotor and outlet pressure for the simulation of twin screw pump to predict the internal flow.
The model consists of 194655 two-dimensional grids and 1325919 three-dimensional grids with the maximum skewness of 0.88993, and FLUENT was used for the CFD solver.
References [1] M. van Beijnum, “CFD simulations of multiphase twin screw pump”, MSc Report, University of Eindhoven, Report No.WPC 2007.08, August 2007, Netherland
Wang, “CFD Numerical Simulation and Experimental Study of Effects of Screw-Sleeve Fitting Clearance upon Triangular Thread Labyrinth Screw Pump (LSP) Performance,” Journal of Applied Fluid Mechanics, Vol. 3, No. 1, pp. 75-81, 2010
[5] Wu Yulin, et al, “Numerical Simulation on the Steady and Unsteady Internal Flows of a Centrifugal Pump” Tsinghua University, China

Exploring the Effect of Length and Angle on NACA 0010 for Diffuser Design in Tidal Current Turbines Nasir Mehmooda, Zhang Liangb and Jawad Khanc College of Ship Building Engineering, Harbin Engineering University, Harbin, Heilongjiang, China athatsnasir@live.com, bzhangliang@hrbeu.edu.cn, cjawadkhan2008@hotmail.com Keywords: Diffuser augmented tidal turbine; Ducted turbine; Shrouded turbine; Numerical simulation of diffuser; CFD simulation of diffuser Abstract.
Numerical simulation of velocity profile at the throat is presented in detail.
This research serves as foundation for using CFD tools for diffuser design for tidal current turbines.
The simulation is carried out using commercially available software Ansys CFX.
Liang: CFD Study of 2D Model of Diffuser for Harnessing Tidal Energy, Advanced Materials Research Vol. 482-484, p. 2270-2274.

Nowadays, numerIcal sImulatIon (often called computatIonal fluId dynamIcs, CFD) has been wIdely accepted owIng to Its advantage of the tremendous progress of computer capabIlItIes In recent years, and the advances In numerIcal modelIng.
Some of problems related to CFD In wInd engIneerIng are governIng equatIon dIscretIzatIon, turbulence model selectIon, numerIcal scheme, and the InItIal and boundary condItIons.
Developments In CFD for IndustrIal and envIronmental applIcatIons In wInd engIneerIng.
Urban wInd flows: wInd tunnel and numerIcal sImulatIons — a prelImInary comparIson.
NumerIcal sImulatIon of atmospherIc flow over complex terraIn.

Using ANSYS-FLOTRAN CFD software, the finite element simulation is conducted by a series of procedures, such as two-dimensional model building of fluidic gyroscope, mesh, load applying and equation solving.
In this paper, we use the FLOTRAN CFD analysis of ANSYS software to establish two-dimensional according to the actual size of fluidic gyroscope.
Fig. 3 Two-dimensional simplified models of sensitive cavity Solve with Finite Element Method The FLOTRAN CFD analysis of ANSYS software is an advanced tools used to study two dimensional and three dimensional flow fields, the simulation typically comprises modeling, loading and solving [3-4].
Select FLOTRAN CFD analysis of ANSYS software.
Wang: Numerical simulation of practical engineering in ANSYS (Northwestern Polytechnical University Press, China 1999)

Steady CFD analysis on gas turbine stage cascade based on mixing plane model G.
With the development of computational fluid dynamics (CFD) and the increasing improvement of computer performance, numerical simulation techniques have been widely used in gas turbine design and flow field analysis[3-5].
“Numerical Simulation of Gas-particle Flows in the Gas Turbine of Turbocharged Set,”Journal of Naval University of Engineering.Wuhan, Vol.23, pp.80-86,April 2011, China
“The computational fluid dynamics analysis-CFD Software Theory and Application.”Beijing:Tsinghua University Press,March 2004, China
Cai, “Dynamic Simulation Analysis in Marine Turbo-charger Set of Supercharged boiler,” Master Thesis, Harbin, Harbin Engineering University, March 2007, China

The issue was solved by computational fluid dynamics simulation.
This case study aims at application of CFD (computational fluid dynamics) simulation method in software ANSYS Fluent to determine optimal air distribution in the social hall of a restaurant facility.
Numerical simulations represent efficient tool for prediction of air flow.
Tab. 1: Heat and moisture gains of the social hall Heat gains – summer season 17.8kW Heat loss – winter season 6.2kW Moisture gains – summer season 31.6kg/h CFD model CFD simulations were carried out in software ANSYS Fluent.
Fifty years of CFD for room air distribution.

Velocity and Sludge Distribution Simulation of the Aerobic Tank of Step-Feed A/O Process Shen Zhao1, a, Xue-yi You1, b , Sheng-jun Liu 2, c , Yu Huang2, d , Feng Shi2, e and Hong-bo Lu2,f 1School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China 2Municipal Engineering Design Institute Co., Ltd. of Northwest China, Lanzhou 730000, China atowntoonzhaoshen@hotmail.com, bxyyou@tju.edu.cn, cxbylsj@163.com, dxbyhuangyu@163.com, exbysf@163.com, fxbylhb@163.com Keywords: CFD; aerobic tank; velocity distribution; sludge distribution Abstract.
Introduction The Computational Fluid Dynamics (CFD), an important branch of fluid mechanics, obtains the flow field information by solving the continuous and momentum equations of fluid.
In this study, based on the CFD technology, the model of the aerobic tank of the step-feed A/O process was built.
Gambit software was applied to the meshing of the models and the grid independence was tested before the simulation.
Influence of the aeration on the sludge distribution at horizonal planes (a) surface layer; (b) middle layer; (c) bottom layer (Left for the simulation without aeration and right for the simulation with aeration) Conclusions The wastewater-sludge flow and the aeration process were simulated by the two-phase model and the discrete phase model.

Advanced CFD technique is able to simulate the movement of particles in rotating machinery[6~7], then experimental data can prove the reliability of CFD methods[8~9].
Meanwhile the CFD methods associated with erosion model can successfully predict the fluid mechanical wear and tear.
This means that the computational model geometry during simulation was invariable.
Geometric model and meshes division of impeller Computational domain of three-dimensional geometric model is build by software ICEM CFD, as shown in Fig. 1.
In all simulations, computations were performed until the residuals of mean velocities, pressure and turbulence quantities were less than 1 × 10−3.

For an axial flow maglev blood pump, based on CFD, using k-ε model, unstructured mesh, establishing the whole flow channel model, a three-dimensional numerical simulation of axial flow maglev blood pump was carried.
Simulation results show that: the port clearance ratio δ=0.75, the flow channel gap h = 2.5mm, blade height b = 1.8mm, the optimal performance was attained.
Three-dimensional numerical analysis was performed by commercial CFD software ANSYS FLUENT.
(3) Though analyzing CFD results, the structure of blood pump was designed.
Numerical simulation and comparative analysis of flow field in axial blood pumps.