lduMatrixPreconditioner.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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     \\/     M anipulation  |
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    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2019-2021 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
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    (at your option) any later version.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "lduMatrix.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
    defineRunTimeSelectionTable(lduMatrix::preconditioner, symMatrix);
    defineRunTimeSelectionTable(lduMatrix::preconditioner, asymMatrix);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
Foam::word Foam::lduMatrix::preconditioner::getName
(
    const dictionary& solverControls
)
{
    word name;
 
    // Handle primitive or dictionary entry
    const entry& e =
        solverControls.lookupEntry("preconditioner", keyType::LITERAL);
 
    if (e.isDict())
    {
        e.dict().readEntry("preconditioner", name);
    }
    else
    {
        e.stream() >> name;
    }
 
    return name;
}
 
 
Foam::autoPtr<Foam::lduMatrix::preconditioner>
Foam::lduMatrix::preconditioner::New
(
    const solver& sol,
    const dictionary& solverControls
)
{
    word name;
 
    // Handle primitive or dictionary entry
 
    const entry& e =
        solverControls.lookupEntry("preconditioner", keyType::LITERAL);
 
    if (e.isDict())
    {
        e.dict().readEntry("preconditioner", name);
    }
    else
    {
        e.stream() >> name;
    }
 
    const dictionary& controls = e.isDict() ? e.dict() : dictionary::null;
 
    if (sol.matrix().symmetric())
    {
        auto* ctorPtr = symMatrixConstructorTable(name);
 
        if (!ctorPtr)
        {
            FatalIOErrorInLookup
            (
                controls,
                "symmetric matrix preconditioner",
                name,
                *symMatrixConstructorTablePtr_
            ) << exit(FatalIOError);
        }
 
        return autoPtr<lduMatrix::preconditioner>
        (
            ctorPtr
            (
                sol,
                controls
            )
        );
    }
    else if (sol.matrix().asymmetric())
    {
        auto* ctorPtr = asymMatrixConstructorTable(name);
 
        if (!ctorPtr)
        {
            FatalIOErrorInLookup
            (
                controls,
                "asymmetric matrix preconditioner",
                name,
                *asymMatrixConstructorTablePtr_
            ) << exit(FatalIOError);
        }
 
        return autoPtr<lduMatrix::preconditioner>
        (
            ctorPtr
            (
                sol,
                controls
            )
        );
    }
 
    FatalIOErrorInFunction(controls)
        << "cannot solve incomplete matrix, "
           "no diagonal or off-diagonal coefficient"
        << exit(FatalIOError);
 
    return nullptr;
}
 
 
// ************************************************************************* //