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Critical flow characteristic such as velocity is the focus of simulations.
The CFD enables the engineer to better, improved and faster design. 2.
The sketch of CFD model is shown in the Fig 1(a, b, c).
For the simulation of dynamics of flow the RSM-7 Equation model was applied.
The sketch of boundaries of the CFD model is shown in Fig. 2.

Numerical simulation of blade channel vortex in a low head Francis turbine Hongming ZHANG 1, a, Lixiang ZHANG 1,b 1 Department of Engineering Mechanics, Kunming University of Science and Technology, Kunming 650500,P.R.China ahmzhang8888@126.com, bzlxzcc@126.com Keywords: CFD; channel vortex; Francis turbine; OpenFOAM Abstract.
OpenFOAM is an object-oriented C++ library of classes and routines of use for writing CFD codes.
It has a set of basic features similar to any commercial CFD solver, such as turbulence models and discretization schemes.
It is increasingly being used in the numerical simulation of hydraulic machinery.
SIMULATING CAVITATING FLOWS WITH LES IN OPENFOAM, V European Conference on Computational Fluid Dynamics, ECCOMAS CFD 2010, J.

Numerical Simulation of Muzzle Flow Field of Gun Based on CFD Zhangxia Guo1, a, Yutian Pan1,b,Yongcun Wang2,c and Haiyan Zhang3,d 1 College Of Mechatronic Engineering North University Of China,Taiyuan,China 2 Northwest Institute of Mechanical & Electrical Engineering,Xianyang,China 3 China North Vehicle Research Institute,Beijing,China a guozhangxianuc@163.com, bpanyutiannuc@163.com, c401713043@qq.com, d bysyzhy@hotmail.com Keywords: numerical simulation; muzzle flow field; CFD Abstract.
The numerical simulation result was identical with the experimental.
With the development of CFD and computer technology, the method of numerical calculation can more accurately simulate the development process of the muzzle flow field.
Numerical simulation of wave system . [ Ph D Thesis ].
Numerical simulation of muzzle blast flow field of large caliber guns.

With the rapid development of computer technology and numerical method, computational fluid dynamics (CFD) has gradually become a main tool to research the inner flow in fluid machinery[2].People began to use CFD to study the flow field distribution and flow pattern in centrifugal pump [3] [4].
Finally, through PIV test to validate CFD simulation in strive for accurate quantitative flow descriptions, simulation and test results are compared, initially reveal the pump flow field distribution, and the in-depth study on the centrifugal pump has a certain reference value.
CFD results In order to discover the inner flow of centrifugal pump under different working conditions of 0.6Q, 0.8Q, Q and 1.2Q, unsteady numerical simulation is carried out by CFX code.
The calculated results are imported into CFD-POST for further analysis.
PIV measurements and CFD computations of secondary flow in a centrifugal pump impeller.

Using ANSYS-FLOTRAN CFD program, the finite element simulation is conducted by a series of procedures, such as three-dimensional model building of airflow inclination sensor, network modifying, loads applying and equation solving.
Solution of finite element method FLOTRAN CFD analysis function of ANSYS software is used for analysis 2d and 3d fluid flow of advanced tools.
(1)Selection of analyzing types: the choice of FLOTRAN CFD analysis capabilities of ANSYS software
With the slice observation function of FLOTRAN CFD observation of inside the temperature and velocity field distribution can be seen.
[3] Guoqiang.Wang, “Numerical simulation and practice on ANSYS,” [M].

For this purpose, a simulation setup consisting of a stationary 3D CFD simulation and a transient 1D simulation is developed.
In [15] the cooling of a vane type brake disc is optimised using transient 3D CFD simulation by Dalal.
In [17] the heat generation during drive cycles is evaluated by a 1D simulation and the airflow velocity around the brake disc by a 3D CFD simulation by Aramburu and Calvo.
On the other hand, the stationary 3D simulation using the CFD simulation software STAR-CCM+, which simulates the wheel assembly, including the braking system, in detail.
The aim of the 3D CFD simulation is a detailed study of the heat outflows from the brake disc in order to derive the transfer parameters for the 1D simulation.

Fig. 3(b) shows the CFD simulation result from the current study and Fig. 3(c) shows the experimental result of the water model using the LDA measurement.
The flow structure of the two counter-rotating toroidal vortices can be captured from the CFD simulation.
The comparison of the flow pattern between the CFD simulation and the experiment results shows good agreement with minor difference.
The CFD simulation and the experiment results of 1-strand tundish model shows good agreement with minor difference.
Sukam, CFD Simulation of Molten Steel Flow with Isothermal Condition in the Continuous Casting Tundish, KMUTNB Int J Appl Sci Technol, 9 (2016) 71-77

Keywords: Vertical-Axis Water Turbine, hydrokinetic technology, CFD, NACA 0025.
In this paper, two-dimensional, time-accurate, parallel CFD simulations of the flow field around a small Darrieus-type VAWaterT operating in an open flow-field are presented, as a part of a research work involving both the University of Padua (Italy) and Vortex Energy S.r.l.
An unstructured mesh was chosen for the Wind Tunnel sub-grid, in order to reduce engineering time to prepare the CFD simulations.
Temporal Discretization and Convergence Criteria The commercial CFD package adopted for the proposed numerical simulations was ANSYS FLUENT 12.1 ®, that implements 2-D Reynolds-averaged Navier-Stokes equations using a finite volume-finite element based solver.
An improved temporal-discretization simulation did not show any significant variation.

Introduction CFD analysis is widely used to determine lift and drag coefficients of airfoils.
However, modelling drag coefficients through CFD analysis has remained a key challenge over the years.
Results from the CFD analysis has also been compared with experimental and XFOIL [5] results.
Cokljat, “A Three-Equation Eddy-Viscosity Model for Reynolds-Averaged Navier–Stokes Simulations of Transitional Flow,” Journal of Fluids Engineering, vol. 130. p. 121401, 2008
Fürst, “Numerical simulation of transitional flows with laminar kinetic energy,” in Engineering MECHANICS, 2012, vol. 20, no. 5, pp. 309–315

CFD model Computational fluid dynamics (CFD) was considered as the numerical simulations on the flow field which was controlled by three basic equations, namely the mass conservation equation, momentum conservation equation, and energy conservation equations.
The CFD software “Fluent v6.3” that solves the Reynolds-Averaged Navier-Stokes equations with finite volume scheme was used for the following numerical simulations in this paper, and the numerical results were analyzed in the Ansys Workbench post-processing module.
Table 1 show the comparisons of three component coefficients obtained from the numerical simulations and wind tunnel tests, respectively.
CFD analysis of wind environment around a human body[J].
Numerical Wind Tunnel Technique for The Wind Resistance Analysis of Long Span Structures.Engineering Mechanics,2007,7 [5] QU Weilian, LIU Linna.CFD-based Numerical Research in the Identifying of Tr-icomponent Force Coefficient of Bridge.Jorunal of Wuhan University of Technology,2007,7 [6] Zhiwen Zhu.CFD Simulation of Wind Field at Bridge Site on Gorge Terrain.Journal of Hunan University(Natural Sciences),2001,10 [7] Haifan Xiang.