scholarly journals Aerodynamic Flow Visualisation Over Surfaces Using Smoke Separation Method from Ansys Fluent

2020 ◽  
Vol 5 (7) ◽  
pp. 32-35
Author(s):  
Virendra Talele ◽  
Niranjan Sonawane ◽  
Omkar Chavan ◽  
Akash Divate ◽  
Niraj Badhe ◽  
...  
Keyword(s):  
Reynolds Number ◽  
Fluid Flow ◽  
High Reynolds Number ◽  
Turbulence Modeling ◽  
Tracking System ◽  
Adverse Pressure Gradient ◽  
Point Particle ◽  
Flow Visualisation ◽  
Ansys Fluent ◽  
High Reynolds

In the present study, three workbench problem for turbulence modeling with high Reynolds number is used to determine the behavior of fluid flow around the surfaces. The cases for simulation is developed using Ansys workbench CFD fluent module. The computational results are obtained using solution sets of high Reynolds number with the LagrangianEulerian (LE) approach of point particle tracking system in Nevers stoke RANS Equation. The effect of flow pattern around the surface and its kinetic behavior of fluid is evaluated in post-process method of results. By observation, it has been tabulated that fluid flow separation is arousal at the corner end of all surfaces which happens due to evoking of a large adverse pressure gradient.

scholarly journals Stable simulation of fluid flow with high-Reynolds number using Ehrenfests’ steps

2007 ◽  
Vol 45 (1-4) ◽  
pp. 389-408 ◽  
Author(s):  
R. Brownlee ◽  
A. N. Gorban ◽  
J. Levesley
Keyword(s):  
Reynolds Number ◽  
Fluid Flow ◽  
High Reynolds Number ◽  
High Reynolds

Assessment of a Second-Moment Closure Model for Strongly Heated Internal Gas Flows

2007 ◽  
Vol 129 (12) ◽  
pp. 1719-1722 ◽  
Author(s):  
Robert E. Spall ◽  
Eugen Nisipeanu ◽  
Adam Richards
Keyword(s):  
Heat Transfer ◽  
Reynolds Number ◽  
High Reynolds Number ◽  
Turbulence Modeling ◽  
Cylindrical Tube ◽  
High Heat ◽  
Moment Closure ◽  
High Heat Flux ◽  
Second Moment Closure ◽  
High Reynolds

Both low- and high-Reynolds-number versions of the stress-ω model of Wilcox (Turbulence Modeling for CFD, 2nd ed., DCW Industries, Inc.) were used to predict velocity and heat transfer data in a high-heat-flux cylindrical tube for which fluid properties varied strongly with temperature. The results indicate that for accurate heat transfer calculations under the conditions considered in this study, inclusion of low-Reynolds-number viscous corrections to the model are essential. The failure of the high-Reynolds-number model to accurately predict the wall temperature was attributed to an overprediction of the near-wall velocity.

NUMERICAL SIMULATION OF HIGH REYNOLDS NUMBER TURBULENT FLOW IN A VANE PASSAGE

2012 ◽  
Vol 19 ◽  
pp. 83-89
Author(s):  
J. F. HUANG ◽  
L. X. ZHANG ◽  
Y. K. GUO
Keyword(s):  
Reynolds Number ◽  
Turbulent Flow ◽  
High Reynolds Number ◽  
Moving Boundary ◽  
Guide Vane ◽  
Turbulent Viscosity ◽  
Ansys Fluent ◽  
Mesh Model ◽  
Simplec Algorithm ◽  
High Reynolds

The numerical simulations of two-dimensional high Reynolds number turbulent flow in a guide vane passage of a Francis hydro turbine are performed successfully by using the unstructured dynamic mesh model for moving body. The standard K – ε turbulence model is employed for the simulation of turbulence. The pressure-velocity coupling method is realized with the SIMPLEC algorithm. The temporal distributions of the pressure and turbulent viscosity in a passage were obtained in the closing of wicket gate on a platform of the software ANSYS FLUENT. The results show that the evolution of the flow field is unsteady with decrease of the geometrical opening of the gate. The details of the flow changes are obtained in the moving rigid body domain. The method can be used to simulate the high Reynolds number incompressible turbulent flow with moving boundary. The calculation provides some references for vortex-induced vibration of the structure in a complex turbulent flow.

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