CFD Online Discussion Forums - Difference between Gauss upwind and Gauss upwind grad (U)

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chandra shekhar pant

May 17, 2020 02:01

Difference between Gauss upwind and Gauss upwind grad (U)

Dear Foamers,

I was looking at my fvSchemes directory and found that for the divSchemes, some time I am using

Code:

div(rhoPhi,U)       Gauss upwind;

    div(phi,k)          Gauss upwind;

and some times I am using

Code:

div(rhoPhi,U)       Gauss upwind grad(U);

    div(phi,k)          Gauss upwind grad(k);

Is there any difference between these two or both are same?

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