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Forum: OpenFOAM Post-Processing

October 21, 2018, 13:51

Replies: 12

snGradCorrection

Views: 4,663

Posted By bigphil

Hi randolph, See my replies below. ...

Hi randolph,

See my replies below.

fvPatchField<Type>::snGrad() is executed for all derived boundary conditions classes that do not override it or explicitly call it. As you have seen,...

Forum: OpenFOAM Post-Processing

October 17, 2018, 07:05

Replies: 12

snGradCorrection

Views: 4,663

Posted By bigphil

Hi Rdf, I am not sure of the reason; for the...

Hi Rdf,

I am not sure of the reason; for the diffusion operator, it can make a big difference e.g. look at the gradT field with laplacianFoam on a mesh with non-orthogonal cells near the boundary....

Forum: OpenFOAM Post-Processing

September 17, 2012, 11:07

Replies: 12

snGradCorrection

Views: 4,663

Posted By bigphil

When you use fvc::snGrad it checks your fvScheme...

When you use fvc::snGrad it checks your fvScheme for what method to use. If it finds corrected then it will use non-orthogonal correction.

Each boundary patch can implement its own method to...

Forum: OpenFOAM Post-Processing

September 17, 2012, 09:30

Replies: 12

snGradCorrection

Views: 4,663

Posted By bigphil

Hi, there is no fvc::snGradCorrection, but...

Hi,

there is no fvc::snGradCorrection, but you can use fvc::snGrad and then set snGradSchemes to corrected in your fvSchemes. This will calculate the surface normal gradient with non-orthogonal...

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