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low reynolds number turbulence model in FLUENT |
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March 1, 2014, 08:21 |
low reynolds number turbulence model in FLUENT
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#1 |
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shubham jain
Join Date: Dec 2013
Posts: 25
Rep Power: 12 |
i have done analysis on naca0012 with Re=3e6 using k-e RNG.
But i want to know best turbulence model for low reynold number analysis (well below critical reynolds number). should i use spalart allmaras or some other model?? and upto which reynolds number should i use k-e RNG and then shift to Low Re model?? |
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March 1, 2014, 08:49 |
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#2 | |
Senior Member
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Quote:
Low reynolds number turbulence models are intended to resolve the viscous sub layer which is also present at high reynolds number. See description of boundary layer in Frank M white's book If you are concerned with the laminar-turbulent mix flow then you should consider the transition models like SST gamma theta or K-Kl-Kw model. SST, K-omega and SA model are by default low-reynolds-number turbulence models. K-epsilon models are added with damping functions to predict the laminar sublayer. |
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