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

May 17, 2020, 02:01	Difference between Gauss upwind and Gauss upwind grad (U)	#1
chandra shekhar pant Senior Member chandra shekhar pant Join Date: Oct 2010 Posts: 220 Rep Power: 16	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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