fixedMeanFvPatchField.C

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    Copyright (C) 2017-2021 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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#include "fixedMeanFvPatchField.H"
#include "volFields.H"

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

template<class Type>
Foam::fixedMeanFvPatchField<Type>::fixedMeanFvPatchField
(
    const fvPatch& p,
    const DimensionedField<Type, volMesh>& iF
)
:
    fixedValueFvPatchField<Type>(p, iF),
    meanValue_()
{}


template<class Type>
Foam::fixedMeanFvPatchField<Type>::fixedMeanFvPatchField
(
    const fvPatch& p,
    const DimensionedField<Type, volMesh>& iF,
    const dictionary& dict
)
:
    fixedValueFvPatchField<Type>(p, iF, dict),
    meanValue_(Function1<Type>::New("meanValue", dict, &this->db()))
{}


template<class Type>
Foam::fixedMeanFvPatchField<Type>::fixedMeanFvPatchField
(
    const fixedMeanFvPatchField<Type>& ptf,
    const fvPatch& p,
    const DimensionedField<Type, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    fixedValueFvPatchField<Type>(ptf, p, iF, mapper),
    meanValue_(ptf.meanValue_.clone())
{}


template<class Type>
Foam::fixedMeanFvPatchField<Type>::fixedMeanFvPatchField
(
    const fixedMeanFvPatchField<Type>& ptf
)
:
    fixedValueFvPatchField<Type>(ptf),
    meanValue_(ptf.meanValue_.clone())
{}


template<class Type>
Foam::fixedMeanFvPatchField<Type>::fixedMeanFvPatchField
(
    const fixedMeanFvPatchField<Type>& ptf,
    const DimensionedField<Type, volMesh>& iF
)
:
    fixedValueFvPatchField<Type>(ptf, iF),
    meanValue_(ptf.meanValue_.clone())
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class Type>
void Foam::fixedMeanFvPatchField<Type>::updateCoeffs()
{
    if (this->updated())
    {
        return;
    }

    const scalar t = this->db().time().timeOutputValue();
    Type meanValue = meanValue_->value(t);

    Field<Type> newValues(this->patchInternalField());

    Type meanValuePsi =
        gSum(this->patch().magSf()*newValues)
       /gSum(this->patch().magSf());

    if (mag(meanValue) > SMALL && mag(meanValuePsi) > 0.5*mag(meanValue))
    {
        newValues *= mag(meanValue)/mag(meanValuePsi);
    }
    else
    {
        newValues += (meanValue - meanValuePsi);
    }

    this->operator==(newValues);

    fixedValueFvPatchField<Type>::updateCoeffs();
}


template<class Type>
void Foam::fixedMeanFvPatchField<Type>::write(Ostream& os) const
{
    fvPatchField<Type>::write(os);
    meanValue_->writeData(os);
    fvPatchField<Type>::writeValueEntry(os);
}


// ************************************************************************* //