fixedHeatFluxTemperature boundary condition
The boundary condition uses a specified heat flux and kappe effective to calculate the temperature gradient. It is a part of LES library in order to allow both RAS and LES models to use the BC.
This commit is contained in:
Vuko Vukcevic
parent
2874c5e775
commit
c681206a94
3 changed files with 402 additions and 0 deletions
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@ -33,6 +33,7 @@ wallFunctions=derivedFvPatchFields/wallFunctions
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derivedFvPatchFields/decayingTurbulence/decayingVorton.C
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derivedFvPatchFields/decayingTurbulence/decayingVorton.C
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derivedFvPatchFields/decayingTurbulence/decayingTurbulenceFvPatchVectorField.C
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derivedFvPatchFields/decayingTurbulence/decayingTurbulenceFvPatchVectorField.C
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derivedFvPatchFields/fixedHeatFluxTemperature/fixedHeatFluxTemperatureFvPatchScalarField.C
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nuSgsWallFunctions=$(wallFunctions)/nuSgsWallFunctions
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nuSgsWallFunctions=$(wallFunctions)/nuSgsWallFunctions
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$(nuSgsWallFunctions)/nuSgsWallFunction/nuSgsWallFunctionFvPatchScalarField.C
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$(nuSgsWallFunctions)/nuSgsWallFunction/nuSgsWallFunctionFvPatchScalarField.C
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@ -0,0 +1,234 @@
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 4.0
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\\ / A nd | Web: http://www.foam-extend.org
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\\/ M anipulation | For copyright notice see file Copyright
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend 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 the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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|
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You should have received a copy of the GNU General Public License
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along with foam-extend. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "fixedHeatFluxTemperatureFvPatchScalarField.H"
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#include "incompressible/RAS/RASModel/RASModel.H"
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#include "incompressible/LES/LESModel/LESModel.H"
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#include "addToRunTimeSelectionTable.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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fixedHeatFluxTemperatureFvPatchScalarField::
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fixedHeatFluxTemperatureFvPatchScalarField
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(
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const fvPatch& p,
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const DimensionedField<scalar, volMesh>& iF
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)
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:
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fixedGradientFvPatchScalarField(p, iF),
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heatFlux_(p.size(), 0.0),
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Pr_(0.0),
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Prt_(0.0)
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{
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this->gradient() = 0.0;
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}
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fixedHeatFluxTemperatureFvPatchScalarField::
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fixedHeatFluxTemperatureFvPatchScalarField
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(
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const fvPatch& p,
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const DimensionedField<scalar, volMesh>& iF,
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const dictionary& dict
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)
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:
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fixedGradientFvPatchScalarField(p, iF),
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heatFlux_("heatFlux", dict, p.size()),
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Pr_(0.0), // Initialized in constructor body
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Prt_(0.0) // Initialized in constructor body
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{
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// Set dummy gradient
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this->gradient() = 0.0;
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// Read the value entry from the dictionary
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if (dict.found("value"))
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{
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fvPatchScalarField::operator=
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(
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scalarField("value", dict, p.size())
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);
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}
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else
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{
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FatalIOErrorIn
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(
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"fixedHeatFluxTemperatureFvPatchScalarField::"
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"fixedHeatFluxTemperatureFvPatchScalarField"
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"("
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"const fvPatch& p,"
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"const DimensionedField<scalar, volMesh>& iF,"
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"const dictionary& dict,"
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"const bool valueRequired"
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")",
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dict
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) << "Essential entry 'value' missing"
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<< exit(FatalIOError);
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}
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// Get mesh
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const fvMesh& mesh = this->dimensionedInternalField().mesh();
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// Create transportProperties dictionary
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IOdictionary transportProperties
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(
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IOobject
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(
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"transportProperties",
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mesh.time().constant(),
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mesh,
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IOobject::MUST_READ,
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IOobject::NO_WRITE,
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false // do not register in the database
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)
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);
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// Read in Prandtl numbers
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Pr_ = dimensionedScalar(transportProperties.lookup("Pr")).value();
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Prt_ = dimensionedScalar(transportProperties.lookup("Prt")).value();
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}
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fixedHeatFluxTemperatureFvPatchScalarField::
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fixedHeatFluxTemperatureFvPatchScalarField
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(
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const fixedHeatFluxTemperatureFvPatchScalarField& ptf,
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const fvPatch& p,
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const DimensionedField<scalar, volMesh>& iF,
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const fvPatchFieldMapper& mapper
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)
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:
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fixedGradientFvPatchScalarField(ptf, p, iF, mapper),
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heatFlux_(ptf.heatFlux_),
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Pr_(ptf.Pr_),
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Prt_(ptf.Prt_)
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{}
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fixedHeatFluxTemperatureFvPatchScalarField::
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fixedHeatFluxTemperatureFvPatchScalarField
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(
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const fixedHeatFluxTemperatureFvPatchScalarField& ptf
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)
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:
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fixedGradientFvPatchScalarField(ptf),
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heatFlux_(ptf.heatFlux_),
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Pr_(ptf.Pr_),
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Prt_(ptf.Prt_)
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{}
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fixedHeatFluxTemperatureFvPatchScalarField::
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fixedHeatFluxTemperatureFvPatchScalarField
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(
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const fixedHeatFluxTemperatureFvPatchScalarField& ptf,
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const DimensionedField<scalar, volMesh>& iF
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)
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:
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fixedGradientFvPatchScalarField(ptf, iF),
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heatFlux_(ptf.heatFlux_),
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Pr_(ptf.Pr_),
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Prt_(ptf.Prt_)
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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void fixedHeatFluxTemperatureFvPatchScalarField::updateCoeffs()
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{
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if (this->updated())
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{
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return;
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}
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// Calculate the gradient depending on the turbulence model
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const fvMesh& mesh = this->dimensionedInternalField().mesh();
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// Get this patch index
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const label patchID = this->patch().index();
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if (mesh.foundObject<incompressible::RASModel>("RASProperties"))
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{
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const incompressible::RASModel& ras =
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mesh.lookupObject<incompressible::RASModel>("RASProperties");
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// Calculate effective kappa at the patch
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const scalarField kappaEffp =
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ras.nu().boundaryField()[patchID]/Pr_
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+ ras.nut()().boundaryField()[patchID]/Prt_;
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this->gradient() = heatFlux_/kappaEffp;
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}
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else if (mesh.foundObject<incompressible::LESModel>("LESProperties"))
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{
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const incompressible::LESModel& les =
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mesh.lookupObject<incompressible::LESModel>("LESProperties");
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// Calculate effective kappa at the patch
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const scalarField kappaEffp =
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les.nu().boundaryField()[patchID]/Pr_
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+ les.nut()().boundaryField()[patchID]/Prt_;
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this->gradient() = heatFlux_/kappaEffp;
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}
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else
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{
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FatalErrorIn
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(
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"fixedHeatFluxTemperatureFvPatchScalarField::updateCoeffs()"
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) << " No valid model for effective kappa calculations."
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<< abort(FatalError);
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}
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fixedGradientFvPatchScalarField::updateCoeffs();
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}
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void fixedHeatFluxTemperatureFvPatchScalarField::write(Ostream& os) const
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{
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fixedGradientFvPatchScalarField::write(os);
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heatFlux_.writeEntry("heatFlux", os);
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this->writeEntry("value", os);
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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makePatchTypeField
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(
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fvPatchScalarField,
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fixedHeatFluxTemperatureFvPatchScalarField
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);
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// ************************************************************************* //
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@ -0,0 +1,167 @@
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 4.0
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\\ / A nd | Web: http://www.foam-extend.org
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\\/ M anipulation | For copyright notice see file Copyright
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend 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 the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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|
WITHOUT ANY WARRANTY; without even the implied warranty of
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|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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|
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You should have received a copy of the GNU General Public License
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|
along with foam-extend. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::fixedHeatFluxTemperatureFvPatchScalarField
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Description
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Fixed temperature flux boundary condition. Assumes incompressible turbulent
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flow. The normal temperature gradient is calculated as:
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snGrad(T) = q/kappaEff
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where:
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- q is the prescribed heat flux [W/m^2],
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- kappaEff is the effective diffusivity field: nu/Pr + nu_t/Pr_t,
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- Pr and Prt are laminar and turbulent Prandtl number read from
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transportProperties dictionary
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Designed to be used alongside solvers with Boussinesq buoyancy
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approximation (e.g. buoyantBoussinesqSimpleFoam).
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Author
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Vuko Vukcevic, Wikki Ltd. All rights reserved
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SourceFiles
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fixedHeatFluxTemperatureFvPatchScalarField.C
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\*---------------------------------------------------------------------------*/
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#ifndef fixedHeatFluxTemperatureFvPatchScalarField_H
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#define fixedHeatFluxTemperatureFvPatchScalarField_H
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#include "fixedGradientFvPatchFields.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class fixedHeatFluxTemperatureFvPatchScalarField Declaration
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\*---------------------------------------------------------------------------*/
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class fixedHeatFluxTemperatureFvPatchScalarField
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:
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public fixedGradientFvPatchScalarField
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{
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// Private data
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//- Fixed heat flux
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scalarField heatFlux_;
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//- Laminar Prandtl number
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scalar Pr_;
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//- Turbulent Prandtl number
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scalar Prt_;
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public:
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//- Runtime type information
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TypeName("fixedHeatFluxTemperature");
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// Constructors
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//- Construct from patch and internal field
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fixedHeatFluxTemperatureFvPatchScalarField
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(
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const fvPatch&,
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const DimensionedField<scalar, volMesh>&
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);
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//- Construct from patch, internal field and dictionary
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fixedHeatFluxTemperatureFvPatchScalarField
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(
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const fvPatch&,
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const DimensionedField<scalar, volMesh>&,
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const dictionary&
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);
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//- Construct by mapping given
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// fixedHeatFluxTemperatureFvPatchScalarField onto a new patch
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fixedHeatFluxTemperatureFvPatchScalarField
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(
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const fixedHeatFluxTemperatureFvPatchScalarField&,
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const fvPatch&,
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const DimensionedField<scalar, volMesh>&,
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const fvPatchFieldMapper&
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);
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//- Construct as copy
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fixedHeatFluxTemperatureFvPatchScalarField
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(
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const fixedHeatFluxTemperatureFvPatchScalarField&
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);
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//- Construct and return a clone
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virtual tmp<fvPatchScalarField> clone() const
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{
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return tmp<fvPatchScalarField>
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(
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new fixedHeatFluxTemperatureFvPatchScalarField(*this)
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);
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}
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//- Construct as copy setting internal field reference
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fixedHeatFluxTemperatureFvPatchScalarField
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(
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const fixedHeatFluxTemperatureFvPatchScalarField&,
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const DimensionedField<scalar, volMesh>&
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);
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//- Construct and return a clone setting internal field reference
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virtual tmp<fvPatchScalarField> clone
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(
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const DimensionedField<scalar, volMesh>& iF
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) const
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{
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return tmp<fvPatchScalarField>
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(
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new fixedHeatFluxTemperatureFvPatchScalarField(*this, iF)
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);
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}
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// Member functions
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//- Update the coefficients associated with the patch field
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virtual void updateCoeffs();
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//- Write
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virtual void write(Ostream&) const;
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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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