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Old   October 7, 2005, 03:11
Default Laminar To Turbulent
  #1
Swarup
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Hi Again,

Is it possible to use low Re k-e model to model laminar to turbulent transition of fluid flow? that is, the flow initially started as laminar at inlet & then somewhere in the domain, it became tubulent.

Any advice is highly appreciated.

Swarup.
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Old   October 7, 2005, 09:45
Default Re: Laminar To Turbulent
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Arunvel
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In my experience RNG in Fluent is the best; you may want to use SST that CFX recommends. but neither of them is accurate if the fluid is in its SCNB/Film boiling state, I mean the results!
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Old   October 7, 2005, 12:38
Default Re: Laminar To Turbulent
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Evan Rosenbaum
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In short, no you cannot. The low Re k-e model is still a turbulent model, but more accurate at the low end of the turbulent range. The transitional k-w model will do OK for part of the transition region, but will not go down into laminar.
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Old   October 8, 2005, 00:21
Default Thanx A Lot
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Swarup
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Thanx Evan & Arunvel for the direct answers & quick response to my question, thanx a lot.

Swarup.
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