bound.C

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    Copyright (C) 2023 OpenCFD Ltd.
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    This file is part of OpenFOAM.

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#include "bound.H"
#include "volFields.H"
#include "fvc.H"

// * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * //

Foam::volScalarField&
Foam::bound(volScalarField& vsf, const dimensionedScalar& lowerBound)
{
    const scalar minVsf = min(vsf).value();

    if (minVsf < lowerBound.value())
    {
        Info<< "bounding " << vsf.name()
            << ", min: " << minVsf
            << " max: " << max(vsf).value()
            << " average: " << gAverage(vsf.primitiveField())
            << endl;

        vsf.primitiveFieldRef() = max
        (
            max
            (
                vsf.primitiveField(),
                fvc::average(max(vsf, lowerBound))().primitiveField()
              * pos0(-vsf.primitiveField())
            ),
            lowerBound.value()
        );

        vsf.boundaryFieldRef() = max(vsf.boundaryField(), lowerBound.value());

        // Give coupled bcs chance to update since cell values changed
        vsf.boundaryFieldRef().evaluateCoupled<coupledFvPatch>();
    }

    return vsf;
}


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