OpenFOAM-dev / data /src /lagrangian /parcel /submodels /CloudFunctionObjects /ParticleTrap /ParticleTrap.C
| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / 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. | |
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| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| for more details. | |
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| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * 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; | |
| } | |
| } | |
| } | |
| // ************************************************************************* // | |