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The difference between Laminar model and DNS at lo

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Old   March 11, 2005, 21:22
Default The difference between Laminar model and DNS at lo
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fpz
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Hi,all, I am newer in CFD. Laminar model is preferable when I choose a mathematical model for low Re problem in Fluent(for example, channel flow less than 2000). But I cannot make a differnce betwwen laminar model and DNS at low Re because here laminar model solves the N-S equation directly. Can I say that Laminar model equals to DNS at low Re given that the mesh resolution is suffcient small? Many thanks!
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Old   March 13, 2005, 18:57
Default Re: The difference between Laminar model and DNS a
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dirk
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You can say that.
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Old   March 13, 2005, 23:55
Default Re: The difference between Laminar model and DNS a
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fpz
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Thanks. However, if Re is greater than 2000, how about the difference given the mesh resolution is sufficent small? If it is okay, can we say that laminar model equals to DNS?
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Old   March 14, 2005, 07:33
Default Re: The difference between Laminar model and DNS a
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mateus
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Hi!

Be carefull with the phrase suficient resolution when talking about DNS...That means about 10^10 nodes for Re=2000 (Re^3)...

Otherwise you can say that...

MATEUS
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