# The difference between Laminar model and DNS at lo

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 March 11, 2005, 21:22 The difference between Laminar model and DNS at lo #1 fpz Guest   Posts: n/a 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!

 March 13, 2005, 18:57 Re: The difference between Laminar model and DNS a #2 dirk Guest   Posts: n/a You can say that.

 March 13, 2005, 23:55 Re: The difference between Laminar model and DNS a #3 fpz Guest   Posts: n/a 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?

 March 14, 2005, 07:33 Re: The difference between Laminar model and DNS a #4 mateus Guest   Posts: n/a 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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