# what equation does fluent solve if the viscous model is laminar?

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 November 23, 2013, 10:57 what equation does fluent solve if the viscous model is laminar? #1 New Member   wang Join Date: Oct 2013 Posts: 5 Rep Power: 5 Sponsored Links If the viscous model is laminar, what equation does fluent solve? Thank you!

 November 23, 2013, 12:43 #2 Senior Member     Alex Join Date: Jun 2012 Location: Germany Posts: 1,505 Rep Power: 25 The Navier-Stokes equations discretized by the finite volume method...

 November 23, 2013, 14:15 #3 New Member   wang Join Date: Oct 2013 Posts: 5 Rep Power: 5 Thank you flotus1! But I don't know can I trust the result ? What is the difference between laminar model and turbulence model? Do you have some document about it ? If you have some, can you tell me ?

 November 23, 2013, 17:50 #4 Senior Member     Alex Join Date: Jun 2012 Location: Germany Posts: 1,505 Rep Power: 25 There is no turbulence model involved when the viscous "model" is set to laminar.

November 24, 2013, 08:39
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wang
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Quote:
 Originally Posted by flotus1 There is no turbulence model involved when the viscous "model" is set to laminar.

Thank you .
I got clear about it . Does it like a DNS simulation? But because of the mesh size , it can't get the turbulence.

 November 24, 2013, 10:30 #6 Senior Member     Alex Join Date: Jun 2012 Location: Germany Posts: 1,505 Rep Power: 25 With the viscous model set to laminar in Fluent, you are performing a DNS. But as you already noticed, the results are affected by the discretization so you have to be very careful when trying to simulate turbulent flows. I wonder if anyone has ever successfully conducted a DNS of a 3-dimensional turbulent flow with Fluent. rajasekar0007 and BlnPhoenix like this.

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