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Old   June 3, 2016, 05:14
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Prabul Chandran
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I am doing analysis of flow past a rotating cylinder with Reynolds number below 2000. What is the best suit model for this problem? Whether i should use laminar model or should go for any turbulent model?
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Old   June 3, 2016, 07:43
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Glenn Horrocks
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For a stationary cylinder the flow is laminar at Re=2000. So unless the rotation of your cylinder is extremely fast (enough to trip turbulence) you should be using a laminar model. Note that it will be shedding vorticies so you will need a transient model.
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Old   June 6, 2016, 05:36
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can you please suggest me the better turbulent model in case the flow becomes turbulent. Now i am using sst model. Whether i should try any other model?
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Old   June 6, 2016, 06:26
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I should put this up as an FAQ:

Unless you have a clear reason not to, you should use SST. You have not stated a clear reason to not use SST - so you should use SST.
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Old   June 7, 2016, 04:02
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thank you...
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