/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
     \\/     M anipulation  |
-------------------------------------------------------------------------------
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
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.

\*---------------------------------------------------------------------------*/

#include "phaseChangeTwoPhaseMixture.H"

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

namespace Foam
{
    defineTypeNameAndDebug(phaseChangeTwoPhaseMixture, 0);
    defineRunTimeSelectionTable(phaseChangeTwoPhaseMixture, components);
}

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

Foam::phaseChangeTwoPhaseMixture::phaseChangeTwoPhaseMixture
(
    const word& type,
    const volVectorField& U,
    const surfaceScalarField& phi,
    const word& alpha1Name
)
:
    twoPhaseMixture(U, phi, alpha1Name),
    phaseChangeTwoPhaseMixtureCoeffs_(subDict(type + "Coeffs")),
    pSat_(lookup("pSat"))
{}


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

Foam::Pair<Foam::tmp<Foam::volScalarField> >
Foam::phaseChangeTwoPhaseMixture::vDotAlphal() const
{
    volScalarField alphalCoeff = 1.0/rho1() - alpha1_*(1.0/rho1() - 1.0/rho2());
    Pair<tmp<volScalarField> > mDotAlphal = this->mDotAlphal();

    return Pair<tmp<volScalarField> >
    (
        alphalCoeff*mDotAlphal[0],
        alphalCoeff*mDotAlphal[1]
    );
}

Foam::Pair<Foam::tmp<Foam::volScalarField> >
Foam::phaseChangeTwoPhaseMixture::vDotP() const
{
    dimensionedScalar pCoeff(1.0/rho1() - 1.0/rho2());
    Pair<tmp<volScalarField> > mDotP = this->mDotP();

    return Pair<tmp<volScalarField> >(pCoeff*mDotP[0], pCoeff*mDotP[1]);
}


bool Foam::phaseChangeTwoPhaseMixture::read()
{
    if (twoPhaseMixture::read())
    {
        phaseChangeTwoPhaseMixtureCoeffs_ = subDict(type() + "Coeffs");
        lookup("pSat") >> pSat_;

        return true;
    }
    else
    {
        return false;
    }
}


// ************************ vim: set sw=4 sts=4 et: ************************ //
