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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2012-2026 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 "ParticleTrap.H"
#include "fvcGrad.H"
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
template<class CloudType>
Foam::ParticleTrap<CloudType>::ParticleTrap
(
const dictionary& dict,
CloudType& owner,
const word& modelName
)
:
CloudFunctionObject<CloudType>(dict, owner, modelName, typeName),
alphaName_
(
this->typeDict().template lookupOrDefault<word>("alpha", "alpha")
),
alphaPtr_(nullptr),
gradAlphaPtr_(nullptr),
threshold_(this->typeDict().template lookup<scalar>("threshold"))
{}
template<class CloudType>
Foam::ParticleTrap<CloudType>::ParticleTrap
(
const ParticleTrap<CloudType>& pt
)
:
CloudFunctionObject<CloudType>(pt),
alphaName_(pt.alphaName_),
alphaPtr_(pt.alphaPtr_),
gradAlphaPtr_(nullptr),
threshold_(pt.threshold_)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
template<class CloudType>
Foam::ParticleTrap<CloudType>::~ParticleTrap()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
template<class CloudType>
void Foam::ParticleTrap<CloudType>::preEvolve()
{
if (alphaPtr_ == nullptr)
{
const fvMesh& mesh = this->owner().mesh();
const volScalarField& alpha =
mesh.lookupObject<volScalarField>(alphaName_);
alphaPtr_ = α
}
if (gradAlphaPtr_.valid())
{
gradAlphaPtr_() == fvc::grad(*alphaPtr_);
}
else
{
gradAlphaPtr_.reset(new volVectorField(fvc::grad(*alphaPtr_)));
}
}
template<class CloudType>
void Foam::ParticleTrap<CloudType>::postEvolve()
{
gradAlphaPtr_.clear();
}
template<class CloudType>
void Foam::ParticleTrap<CloudType>::postMove
(
parcelType& p,
const scalar,
const point&,
bool&
)
{
if (alphaPtr_->primitiveField()[p.cell()] < threshold_)
{
const vector& gradAlpha = gradAlphaPtr_()[p.cell()];
vector nHat = gradAlpha/mag(gradAlpha);
scalar nHatU = nHat & p.U();
if (nHatU < 0)
{
p.U() -= 2*nHat*nHatU;
}
}
}
// ************************************************************************* //
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