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| Author(s) Ugo Piomelli, Carlo Scalo |
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| Title Large-eddy simulations of relaminarizing flows |
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| Publication Name 17th Annual Meeting of the CFD Society of Canada |
Publication Type Proceedings |
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Publication Year 2009 |
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| Abstract The reversion of a turbulent flow to a laminar or quasi-laminar state may take very different paths, depending on the cause of the relaminarization, and modelling these flows is quite difficult. Large-eddy simulations (LES) may be quite effective as the large, momentum carrying eddies are accurately resolved; the unresolved, subgrid-scale (SGS) stresses, however, may still play an important role. We report here the results of an a priori analysis of the behaviour of the SGS stresses in two relaminarizing flows: a plane channel subjected to spanwise rotation, and a boundary layer subjected to a strong favorable pressure gradient resulting in freestream acceleration. The a priori test results are accompanied by actual LES, which highlight the effect of grid resolution and modelling errors on the dynamics of the relaminarization. |
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| Website http:// |
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| Paper Status Published |
DOI / Publication ID hpcg1246 |
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