/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
     \\/     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 "Stockmayer.H"

#include "error.H"

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

/*
const Foam::scalarField Foam::Stockmayer::a(
        autoPtr<IStringStream>(
            new IStringStream(
                "6 (1.0548 0.15504 0.55909 2.1705 0.093193 1.5)"
                )
            )()
        );

const Foam::scalarField Foam::Stockmayer::b(
        autoPtr<IStringStream>(
            new IStringStream(
                "6 (1.0413 0.11930 0.43628 1.6041 0.095661 2.0)"
                )
            )()
        );
*/

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


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


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


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

Foam::Stockmayer::Stockmayer(const Neutral& a, const Neutral& b)
:
    a_(a.dipoleMoment() > 0.0 ? b : a),
    b_(a.dipoleMoment() > 0.0 ? a : b),
    eij_(Foam::sqrt(a_.wellDepth()*b_.wellDepth())),
    sigmaij_((a_.diameter()+b_.diameter())/2.0),
    piSigmaSqr_(Foam::Particle::pi * sqr(sigmaij_)),
    Wij_(1.0/(1.0/a_.W() + 1.0/b_.W())),
    deltaij_(a_.dipoleMoment()*b_.dipoleMoment()/2.0/(eij_*a_.k)/pow3(sigmaij_))
{
    if (b_.dipoleMoment() > 0.0 && deltaij_ > 0.0)
    {
        scalar alphaStar = a_.alpha() / a_.diameter() / a_.diameter() / a_.diameter();

        scalar muStar = b_.dipoleMoment() / Foam::sqrt(b_.wellDepth()*b_.diameter()*b_.diameter()*b_.diameter());

        scalar ksi = 1.0 + alphaStar * muStar * Foam::sqrt(b_.wellDepth()/a_.wellDepth());

        eij_ *= ksi * ksi;
        sigmaij_ *= Foam::pow(ksi, -1.0/6.0);
    }
}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

Foam::Stockmayer::~Stockmayer()
{}


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



// * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * * //

void Foam::Stockmayer::operator=(const Stockmayer& rhs)
{
    // Check for assignment to self
    if (this == &rhs)
    {
        FatalErrorInFunction
            << "Attempted assignment to self"
            << abort(FatalError);
    }
}

// * * * * * * * * * * * * * * Friend Functions  * * * * * * * * * * * * * * //


// * * * * * * * * * * * * * * Friend Operators * * * * * * * * * * * * * * //


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