# divSchemes, Tutorials\incompressible\pisoFoam\ras\cavityCouple dU

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 August 26, 2014, 10:33 divSchemes, Tutorials\incompressible\pisoFoam\ras\cavityCouple dU #1 Member   Pratik Nanavati Join Date: May 2014 Location: Munich, Germany Posts: 40 Rep Power: 4 Hello All, I was doing the below tutorial, \OpenFOAM_Tutorials\incompressible\pisoFoam\ras\ca vityCoupledU now the problem is, I dont understand at all why they have selected such schemes like Gauss limitedLinearV 1, Gauss limitedLinear 1, Gauss linear ? I have gone through the User Guide already but unfortunatelly there is no absolute answers/explanation availabale for it ! (they have just printed a Table thats it !) I tried searching back and fourth in the forums, but couldn't find it. divSchemes { default none; div(phi,U) Gauss limitedLinearV 1; div(phi,k) Gauss limitedLinear 1; div(phi,epsilon) Gauss limitedLinear 1; div(phi,R) Gauss limitedLinear 1; div(R) Gauss linear; div(phi,nuTilda) Gauss limitedLinear 1; div((nuEff*dev(T(grad(U))))) Gauss linear; } If I narrow down my question, Can anyone please help me understanding how these schemes are selected for perticular parameters ? It is driving me crazy as I don't know what they exactly mean and what they exactly makes difference. Last edited by nanavati; August 26, 2014 at 10:34. Reason: title change

 September 23, 2014, 04:41 #2 Senior Member   Joachim Herb Join Date: Sep 2010 Posts: 383 Rep Power: 11 nanavati likes this.

September 24, 2014, 07:48
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Pratik Nanavati
Join Date: May 2014
Location: Munich, Germany
Posts: 40
Rep Power: 4
Quote:
 Originally Posted by jherb
Many Thanks for the links. its quite useful.

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