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Forum: OpenFOAM Programming & Development

March 10, 2011, 04:07

Replies: 9

surface gradient

Views: 6,318

Posted By Martin80

Hi Gijs, I think in your example snGrad()...

Hi Gijs,

I think in your example snGrad() will also be used as a member function of the boundary field (patchfield). I think I have found the calculation in
...

Forum: OpenFOAM Programming & Development

March 9, 2011, 10:53

Replies: 9

surface gradient

Views: 6,318

Posted By Martin80

Hi Gijs, Thanks for your reply, fvc::grad...

Hi Gijs,

Thanks for your reply, fvc::grad is using the Gauss integral theory to calculate the gradient at the cell center – so it's not what I was seeking for.

As I can see now, the...

Forum: OpenFOAM Programming & Development

February 14, 2011, 10:11

Replies: 9

surface gradient

Views: 6,318

Posted By Martin80

surface gradient

Hi,

in the openFoam programmer's guide on P-40 there is an explanation for the
surface normal gradient:

surfaceScalarField gradnq=fvc::snGrad(q);

which gives (grad(q))_f*n_f.

I want to...

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