perturbedTemperatureDependentContactAngleForce.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
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    Copyright (C) 2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
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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#include "perturbedTemperatureDependentContactAngleForce.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace regionModels
{
namespace areaSurfaceFilmModels
{
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
defineTypeNameAndDebug(perturbedTemperatureDependentContactAngleForce, 0);
addToRunTimeSelectionTable
(
    force,
    perturbedTemperatureDependentContactAngleForce,
    dictionary
);
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
perturbedTemperatureDependentContactAngleForce::
perturbedTemperatureDependentContactAngleForce
(
    liquidFilmBase& film,
    const dictionary& dict
)
:
    contactAngleForce(typeName, film, dict),
    thetaPtr_(Function1<scalar>::New("theta", coeffDict_, &film.primaryMesh())),
    rndGen_(label(0)),
    distribution_
    (
        distributionModel::New
        (
            coeffDict_.subDict("distribution"),
            rndGen_
        )
    )
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
perturbedTemperatureDependentContactAngleForce::
~perturbedTemperatureDependentContactAngleForce()
{}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
tmp<areaScalarField> perturbedTemperatureDependentContactAngleForce::
theta() const
{
    tmp<areaScalarField> ttheta
    (
        new areaScalarField
        (
            IOobject
            (
                typeName + ":theta",
                film().primaryMesh().time().timeName(),
                film().primaryMesh()
            ),
            film().regionMesh(),
            dimensionedScalar(dimless, Zero)
        )
    );
 
    areaScalarField& theta = ttheta.ref();
    scalarField& thetai = theta.ref();
 
    const areaScalarField& T = film().Tf();
 
    // Initialize with the function of temperature
    thetai = thetaPtr_->value(T());
 
    // Add the stochastic perturbation
    forAll(thetai, facei)
    {
        thetai[facei] += distribution_->sample();
    }
 
    return ttheta;
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace surfaceFilmModels
} // End namespace regionModels
} // End namespace Foam
 
// ************************************************************************* //