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Forum: OpenFOAM Running, Solving & CFD

November 29, 2006, 09:48

Replies: 19

Gradient operator implicit discretization

Views: 7,991

Posted By hartinger

yes, it can you can't have

yes, it can

you can't have the term "s*grad(I)" implicitly, but you can replace that with the term you suggested "div(s*I)-I*div(s)", for which we gave the actual implementation.
The...

Forum: OpenFOAM Running, Solving & CFD

November 29, 2006, 09:24

Replies: 19

Gradient operator implicit discretization

Views: 7,991

Posted By hartinger

Hrv, thanks, does make sense.

Hrv, thanks, does make sense.

Diego, we decribed the implementation of "s*grad(I)" as "div(s*I)-I*div(s)", which would be one of the terms for the matrix setup (:= means defined as)
...

Forum: OpenFOAM Running, Solving & CFD

November 29, 2006, 07:34

Replies: 19

Gradient operator implicit discretization

Views: 7,991

Posted By hartinger

ignore second & mesh.Sf()

ignore second & mesh.Sf()

P & M

Forum: OpenFOAM Running, Solving & CFD

November 29, 2006, 07:32

Replies: 19

Gradient operator implicit discretization

Views: 7,991

Posted By hartinger

Yep, looks correct, should wor

Yep, looks correct, should work.

surfaceScalarField sf = fvc::surfaceInterpolate(s)& mesh.Sf();
& mesh.Sf()
s * grad(I) := fvm::div(sf, I) - fvm::Sp(fvc::div(fs), I);

the 'Sp' - thing...

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