/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  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/>.

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

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

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

inline Foam::scalar Foam::Interaction::power(const scalar a, const scalar b)
    const
{
    return pow(a, b);
}


inline Foam::scalar Foam::Interaction::expon(const scalar a)
    const
{
    return exp(a);
}


inline Foam::scalar Foam::Interaction::loge(const scalar a)
    const
{
    return log(a);
}


inline Foam::scalar Foam::Interaction::D(const scalar mij, const scalar p, const scalar T, const scalar OmegaD)
    const
{
    return (3.0/16.0) * sqrt(2.0*Foam::Particle::pi*Foam::Particle::NA*pow3(Foam::Particle::k*T)/mij) / (p * OmegaD);
}


inline Foam::scalar Foam::Interaction::mu(const scalar mk, const scalar T, const scalar OmegaD)
    const
{
    return (5.0/16.0) * sqrt(Foam::Particle::pi*mk*Foam::Particle::k*T/Foam::Particle::NA) / OmegaD;
}

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


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


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


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


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


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


// * * * * * * * * * * * * * * IOstream Operators  * * * * * * * * * * * * * //


// * * * * * * * * * * * * * * * Ostream Operator  * * * * * * * * * * * * * //


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


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