lduMatrixSolver.C

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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#include "lduMatrix.H"
#include <OpenFOAM/diagonalSolver.H>

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
    defineRunTimeSelectionTable(lduMatrix::solver, symMatrix);
    defineRunTimeSelectionTable(lduMatrix::solver, asymMatrix);
}


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

Foam::autoPtr<Foam::lduMatrix::solver> Foam::lduMatrix::solver::New
(
    const word& fieldName,
    const lduMatrix& matrix,
    const FieldField<Field, scalar>& interfaceBouCoeffs,
    const FieldField<Field, scalar>& interfaceIntCoeffs,
    const lduInterfaceFieldPtrsList& interfaces,
    const dictionary& solverControls
)
{
    word name(solverControls.lookup("solver"));

    if (matrix.diagonal())
    {
        return autoPtr<lduMatrix::solver>
        (
            new diagonalSolver
            (
                fieldName,
                matrix,
                interfaceBouCoeffs,
                interfaceIntCoeffs,
                interfaces,
                solverControls
            )
        );
    }
    else if (matrix.symmetric())
    {
        symMatrixConstructorTable::iterator constructorIter =
            symMatrixConstructorTablePtr_->find(name);

        if (constructorIter == symMatrixConstructorTablePtr_->end())
        {
            FatalIOErrorIn
            (
                "lduMatrix::solver::New", solverControls
            )   << "Unknown symmetric matrix solver " << name << nl << nl
                << "Valid symmetric matrix solvers are :" << endl
                << symMatrixConstructorTablePtr_->sortedToc()
                << exit(FatalIOError);
        }

        return autoPtr<lduMatrix::solver>
        (
            constructorIter()
            (
                fieldName,
                matrix,
                interfaceBouCoeffs,
                interfaceIntCoeffs,
                interfaces,
                solverControls
            )
        );
    }
    else if (matrix.asymmetric())
    {
        asymMatrixConstructorTable::iterator constructorIter =
            asymMatrixConstructorTablePtr_->find(name);

        if (constructorIter == asymMatrixConstructorTablePtr_->end())
        {
            FatalIOErrorIn
            (
                "lduMatrix::solver::New", solverControls
            )   << "Unknown asymmetric matrix solver " << name << nl << nl
                << "Valid asymmetric matrix solvers are :" << endl
                << asymMatrixConstructorTablePtr_->sortedToc()
                << exit(FatalIOError);
        }

        return autoPtr<lduMatrix::solver>
        (
            constructorIter()
            (
                fieldName,
                matrix,
                interfaceBouCoeffs,
                interfaceIntCoeffs,
                interfaces,
                solverControls
            )
        );
    }
    else
    {
        FatalIOErrorIn
        (
            "lduMatrix::solver::New", solverControls
        )   << "cannot solve incomplete matrix, "
               "no diagonal or off-diagonal coefficient"
            << exit(FatalIOError);

        return autoPtr<lduMatrix::solver>(NULL);
    }
}


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

Foam::lduMatrix::solver::solver
(
    const word& fieldName,
    const lduMatrix& matrix,
    const FieldField<Field, scalar>& interfaceBouCoeffs,
    const FieldField<Field, scalar>& interfaceIntCoeffs,
    const lduInterfaceFieldPtrsList& interfaces,
    const dictionary& solverControls
)
:
    fieldName_(fieldName),
    matrix_(matrix),
    interfaceBouCoeffs_(interfaceBouCoeffs),
    interfaceIntCoeffs_(interfaceIntCoeffs),
    interfaces_(interfaces),
    controlDict_(solverControls)
{
    readControls();
}


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

void Foam::lduMatrix::solver::readControls()
{
    maxIter_   = controlDict_.lookupOrDefault<label>("maxIter", 1000);
    tolerance_ = controlDict_.lookupOrDefault<scalar>("tolerance", 1e-6);
    relTol_    = controlDict_.lookupOrDefault<scalar>("relTol", 0);
}


void Foam::lduMatrix::solver::read(const dictionary& solverControls)
{
    controlDict_ = solverControls;
    readControls();
}


Foam::scalar Foam::lduMatrix::solver::normFactor
(
    const scalarField& psi,
    const scalarField& source,
    const scalarField& Apsi,
    scalarField& tmpField
) const
{
    // --- Calculate A dot reference value of psi
    matrix_.sumA(tmpField, interfaceBouCoeffs_, interfaces_);
    tmpField *= gAverage(psi);

    return gSum(mag(Apsi - tmpField) + mag(source - tmpField)) + matrix_.small_;

    // At convergence this simpler method is equivalent to the above
    // return 2*gSumMag(source) + matrix_.small_;
}


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