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Setting patch field values equal to internal field values

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Old   October 21, 2014, 15:38
Default Setting patch field values equal to internal field values
Vincent Leroy
Join Date: Jul 2012
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Dear foamers,

I am trying to set patch values of a given field equal to the corresponding internal field values. This shouldn't be too complicated, but it seems to be not as trivial as I would have expected.

Here is what I wrote (let's name our volScalarField 'myField'):

const fvPatchList & patches = mesh.boundary();
forAll(patches, iPatch)
    UList<scalar> myList(myField.boundaryField()[iPatch].patchInternalField());

    forAll(myField.boundaryField()[iPatch], iCell)
        myField.boundaryField()[iPatch][iCell] = myList[iCell];
I end up with all patch values set as expected, except a few ones. I guess I must have done something wrong. Any ideas?
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Old   October 21, 2014, 15:49
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Alexey Matveichev
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what's wrong with fixedInternalValue patch type? It does the thing this way:

template<class Type>
void Foam::fixedInternalValueFvPatchField<Type>::manipulateMatrix
    fvMatrix<Type>& matrix
    // Apply the patch internal field as a constraint in the matrix
    matrix.setValues(this->patch().faceCells(), this->patchInternalField());
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boundary, internal field, patch field

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