surfaceFilmModels::BrunDrippingInjection: New dripping model based on the Rayleigh-Taylor stability analysis
of film flow on an inclined plane by Brun et.al.
Brun, P. T., Damiano, A., Rieu, P., Balestra, G., & Gallaire, F. (2015).
Rayleigh-Taylor instability under an inclined plane.
Physics of Fluids (1994-present), 27(8), 084107.
This commit is contained in:
Henry Weller
parent
1467bf2428
commit
1d4bedae68
4 changed files with 335 additions and 1 deletions
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@ -20,6 +20,7 @@ $(KINEMATICMODELS)/injectionModel/injectionModel/injectionModel.C
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$(KINEMATICMODELS)/injectionModel/injectionModel/injectionModelNew.C
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$(KINEMATICMODELS)/injectionModel/injectionModelList/injectionModelList.C
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$(KINEMATICMODELS)/injectionModel/drippingInjection/drippingInjection.C
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$(KINEMATICMODELS)/injectionModel/BrunDrippingInjection/BrunDrippingInjection.C
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$(KINEMATICMODELS)/injectionModel/patchInjection/patchInjection.C
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$(KINEMATICMODELS)/injectionModel/curvatureSeparation/curvatureSeparation.C
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@ -340,7 +340,7 @@ public:
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//- Return const access to the dynamic viscosity / [Pa.s]
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inline const volScalarField& mu() const;
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//- Return const access to the surface tension / [m/s2]
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//- Return const access to the surface tension / [kg/s2]
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inline const volScalarField& sigma() const;
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@ -0,0 +1,182 @@
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2016 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "BrunDrippingInjection.H"
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#include "addToRunTimeSelectionTable.H"
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#include "fvMesh.H"
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#include "Time.H"
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#include "mathematicalConstants.H"
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#include "Random.H"
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#include "volFields.H"
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#include "kinematicSingleLayer.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace regionModels
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{
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namespace surfaceFilmModels
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{
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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defineTypeNameAndDebug(BrunDrippingInjection, 0);
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addToRunTimeSelectionTable(injectionModel, BrunDrippingInjection, dictionary);
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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BrunDrippingInjection::BrunDrippingInjection
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(
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surfaceFilmModel& owner,
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const dictionary& dict
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)
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:
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injectionModel(type(), owner, dict),
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ubarStar_(coeffDict_.lookupOrDefault("ubarStar", 1.62208)),
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deltaStable_(readScalar(coeffDict_.lookup("deltaStable"))),
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particlesPerParcel_(readScalar(coeffDict_.lookup("particlesPerParcel"))),
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rndGen_(label(0), -1),
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parcelDistribution_
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(
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distributionModels::distributionModel::New
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(
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coeffDict_.subDict("parcelDistribution"),
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rndGen_
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)
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),
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diameter_(owner.regionMesh().nCells(), -1.0)
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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BrunDrippingInjection::~BrunDrippingInjection()
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{}
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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void BrunDrippingInjection::correct
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(
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scalarField& availableMass,
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scalarField& massToInject,
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scalarField& diameterToInject
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)
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{
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const kinematicSingleLayer& film =
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refCast<const kinematicSingleLayer>(this->owner());
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const scalar pi = constant::mathematical::pi;
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// Calculate available dripping mass
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tmp<volScalarField> tsinAlpha(film.gNorm()/mag(film.g()));
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const scalarField& sinAlpha = tsinAlpha();
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const scalarField& magSf = film.magSf();
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const scalarField& delta = film.delta();
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const scalarField& rho = film.rho();
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const scalarField& sigma = film.sigma();
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const scalar magg = mag(film.g().value());
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scalarField massDrip(film.regionMesh().nCells(), 0.0);
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forAll(delta, i)
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{
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if (sinAlpha[i] > SMALL && delta[i] > deltaStable_)
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{
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scalar lc = sqrt(sigma[i]/(rho[i]*magg));
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scalar deltaStable = max
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(
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3*lc*sqrt(1 - sqr(sinAlpha[i]))
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/(ubarStar_*sqrt(sinAlpha[i])*sinAlpha[i]),
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deltaStable_
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);
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Info<< delta[i] << " " << deltaStable << endl;
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if (delta[i] > deltaStable)
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{
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const scalar ddelta = max(0.0, delta[i] - deltaStable);
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massDrip[i] +=
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min(availableMass[i], max(0.0, ddelta*rho[i]*magSf[i]));
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}
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}
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}
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// Collect the data to be transferred
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forAll(massDrip, celli)
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{
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if (massDrip[celli] > 0)
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{
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// Set new particle diameter if not already set
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if (diameter_[celli] < 0)
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{
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diameter_[celli] = parcelDistribution_->sample();
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}
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scalar& diam = diameter_[celli];
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scalar rhoc = rho[celli];
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scalar minMass = particlesPerParcel_*rhoc*pi/6*pow3(diam);
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if (massDrip[celli] > minMass)
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{
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// All drip mass can be injected
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massToInject[celli] += massDrip[celli];
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availableMass[celli] -= massDrip[celli];
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// Set particle diameter
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diameterToInject[celli] = diam;
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// Retrieve new particle diameter sample
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diam = parcelDistribution_->sample();
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addToInjectedMass(massDrip[celli]);
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}
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else
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{
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// Particle mass below minimum threshold - cannot be injected
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massToInject[celli] = 0;
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diameterToInject[celli] = 0;
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}
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}
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else
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{
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massToInject[celli] = 0;
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diameterToInject[celli] = 0;
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}
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}
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injectionModel::correct();
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace surfaceFilmModels
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} // End namespace regionModels
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} // End namespace Foam
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// ************************************************************************* //
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@ -0,0 +1,151 @@
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2016 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::BrunDrippingInjection
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Description
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Film Dripping mass transfer model.
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If the film thickness exceeds the critical value needed to generate a valid
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parcel, the equivalent mass is removed from the film. The critical film
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thickness is calculated from the Rayleigh-Taylor stability analysis
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of film flow on an inclined plane by Brun et.al.
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Reference:
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\verbatim
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Brun, P. T., Damiano, A., Rieu, P., Balestra, G., & Gallaire, F. (2015).
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Rayleigh-Taylor instability under an inclined plane.
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Physics of Fluids (1994-present), 27(8), 084107.
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\endverbatim
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New parcel diameters are sampled from a PDF.
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SourceFiles
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BrunDrippingInjection.C
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\*---------------------------------------------------------------------------*/
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#ifndef BrunDrippingInjection_H
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#define BrunDrippingInjection_H
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#include "injectionModel.H"
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#include "distributionModel.H"
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#include "cachedRandom.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace regionModels
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{
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namespace surfaceFilmModels
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{
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/*---------------------------------------------------------------------------*\
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Class BrunDrippingInjection Declaration
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\*---------------------------------------------------------------------------*/
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class BrunDrippingInjection
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:
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public injectionModel
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{
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// Private member functions
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//- Disallow default bitwise copy construct
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BrunDrippingInjection(const BrunDrippingInjection&);
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//- Disallow default bitwise assignment
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void operator=(const BrunDrippingInjection&);
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protected:
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// Protected data
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//- Critical non-dimensional interface velocity
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// Coefficient in the film angle stability function
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// defaults to 1.62208
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scalar ubarStar_;
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//- Stable film thickness - drips only formed if thickness
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// execeeds this threhold value
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scalar deltaStable_;
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//- Number of particles per parcel
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scalar particlesPerParcel_;
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//- Random number generator
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cachedRandom rndGen_;
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//- Parcel size PDF model
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const autoPtr<distributionModels::distributionModel>
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parcelDistribution_;
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//- Diameters of particles to inject into the dripping
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scalarList diameter_;
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public:
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//- Runtime type information
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TypeName("BrunDrippingInjection");
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// Constructors
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//- Construct from surface film model
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BrunDrippingInjection
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(
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surfaceFilmModel& owner,
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const dictionary& dict
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);
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//- Destructor
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virtual ~BrunDrippingInjection();
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// Member Functions
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//- Correct
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virtual void correct
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(
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scalarField& availableMass,
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scalarField& massToInject,
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scalarField& diameterToInject
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);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace surfaceFilmModels
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} // End namespace regionModels
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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Reference in a new issue