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Wind and Structures Volume 9, Number 5, September 2006 , pages 357-367 DOI: https://doi.org/10.12989/was.2006.9.5.357 |
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Mean pressure prediction for the case of 3D unsteadyrnturbulent flow past isolated prismatic cylinder |
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V. Ramesh, S. Vengadesan and J.L. Narasimhan
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| Abstract | ||
| Unsteady 3D Reynolds Averaged Navier-Stokes (URANS) solver is used to simulate the turbulent flow past an isolated prismatic cylinder at Re = 37,400. The aspect ratio of height to base width of the body is 5. The turbulence closure is achieved through a non-linear k - e model. The applicability of this model to predict unsteady forces associated with this flow is examined. The study shows that the present URANS solver with standard wall functions predicts all the major unsteady phenomena showing closer agreement with experiment. This investigation concludes that URANS simulations with the non-linear k - e model as a turbulence closure provides a promising alternative to LES with view to study flows having complex features. | ||
| Key Words | ||
| bluff body; non-linear turbulence model; URANS. | ||
| Address | ||
| Department of Applied Mechanics, IIT Madras, Chennai-36, India | ||