src/thermophysicalModels/radiationModels/derivedFvPatchFields/wideBandDiffusiveRadiation/wideBandDiffusiveRadiationMixedFvPatchScalarField.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
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   8 License
   9     This file is part of OpenFOAM.
  10
  11     OpenFOAM is free software: you can redistribute it and/or modify it
  12     under the terms of the GNU General Public License as published by
  13     the Free Software Foundation, either version 3 of the License, or
  14     (at your option) any later version.
  15
  16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19     for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 \*---------------------------------------------------------------------------*/
  25
  26 #include "wideBandDiffusiveRadiationMixedFvPatchScalarField.H"
  27 #include "addToRunTimeSelectionTable.H"
  28 #include "fvPatchFieldMapper.H"
  29 #include "volFields.H"
  30
  31 #include "fvDOM.H"
  32 #include "wideBandAbsorptionEmission.H"
  33 #include "constants.H"
  34
  35 using namespace Foam::constant;
  36 using namespace Foam::constant::mathematical;
  37
  38 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  39
  40 Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
  41 wideBandDiffusiveRadiationMixedFvPatchScalarField
  42 (
  43     const fvPatch& p,
  44     const DimensionedField<scalar, volMesh>& iF
  45 )
  46 :
  47     mixedFvPatchScalarField(p, iF),
  48     radiationCoupledBase(p, "undefined", scalarField::null()),
  49     TName_("undefinedT")
  50 {
  51     refValue() = 0.0;
  52     refGrad() = 0.0;
  53     valueFraction() = 1.0;
  54 }
  55
  56
  57 Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
  58 wideBandDiffusiveRadiationMixedFvPatchScalarField
  59 (
  60     const wideBandDiffusiveRadiationMixedFvPatchScalarField& ptf,
  61     const fvPatch& p,
  62     const DimensionedField<scalar, volMesh>& iF,
  63     const fvPatchFieldMapper& mapper
  64 )
  65 :
  66     mixedFvPatchScalarField(ptf, p, iF, mapper),
  67     radiationCoupledBase
  68     (
  69         p,
  70         ptf.emissivityMethod(),
  71         ptf.emissivity_
  72     ),
  73     TName_(ptf.TName_)
  74 {}
  75
  76
  77 Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
  78 wideBandDiffusiveRadiationMixedFvPatchScalarField
  79 (
  80     const fvPatch& p,
  81     const DimensionedField<scalar, volMesh>& iF,
  82     const dictionary& dict
  83 )
  84 :
  85     mixedFvPatchScalarField(p, iF),
  86     radiationCoupledBase(p, dict),
  87     TName_(dict.lookup("T"))
  88 {
  89     if (dict.found("value"))
  90     {
  91         fvPatchScalarField::operator=
  92         (
  93             scalarField("value", dict, p.size())
  94         );
  95         refValue() = scalarField("refValue", dict, p.size());
  96         refGrad() = scalarField("refGradient", dict, p.size());
  97         valueFraction() = scalarField("valueFraction", dict, p.size());
  98     }
  99     else
 100     {
 101         const scalarField& Tp =
 102             patch().lookupPatchField<volScalarField, scalar>(TName_);
 103
 104         refValue() =
 105             4.0*physicoChemical::sigma.value()*pow4(Tp)*emissivity()/pi;
 106         refGrad() = 0.0;
 107
 108         fvPatchScalarField::operator=(refValue());
 109     }
 110 }
 111
 112
 113 Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
 114 wideBandDiffusiveRadiationMixedFvPatchScalarField
 115 (
 116     const wideBandDiffusiveRadiationMixedFvPatchScalarField& ptf
 117 )
 118 :
 119     mixedFvPatchScalarField(ptf),
 120     radiationCoupledBase
 121     (
 122         ptf.patch(),
 123         ptf.emissivityMethod(),
 124         ptf.emissivity_
 125     ),
 126     TName_(ptf.TName_)
 127 {}
 128
 129
 130 Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
 131 wideBandDiffusiveRadiationMixedFvPatchScalarField
 132 (
 133     const wideBandDiffusiveRadiationMixedFvPatchScalarField& ptf,
 134     const DimensionedField<scalar, volMesh>& iF
 135 )
 136 :
 137     mixedFvPatchScalarField(ptf, iF),
 138     radiationCoupledBase
 139     (
 140         ptf.patch(),
 141         ptf.emissivityMethod(),
 142         ptf.emissivity_
 143     ),
 144     TName_(ptf.TName_)
 145 {}
 146
 147
 148 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 149
 150 void Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
 151 updateCoeffs()
 152 {
 153     if (this->updated())
 154     {
 155         return;
 156     }
 157
 158     // Since we're inside initEvaluate/evaluate there might be processor
 159     // comms underway. Change the tag we use.
 160     int oldTag = UPstream::msgType();
 161     UPstream::msgType() = oldTag+1;
 162
 163     const radiationModel& radiation =
 164         db().lookupObject<radiationModel>("radiationProperties");
 165
 166     const fvDOM& dom(refCast<const fvDOM>(radiation));
 167
 168     label rayId = -1;
 169     label lambdaId = -1;
 170     dom.setRayIdLambdaId(dimensionedInternalField().name(), rayId, lambdaId);
 171
 172     const label patchI = patch().index();
 173
 174     if (dom.nLambda() == 0)
 175     {
 176         FatalErrorIn
 177         (
 178             "Foam::radiation::"
 179             "wideBandDiffusiveRadiationMixedFvPatchScalarField::updateCoeffs"
 180         )   << " a non-grey boundary condition is used with a grey "
 181             << "absorption model" << nl << exit(FatalError);
 182     }
 183
 184     scalarField& Iw = *this;
 185     const vectorField n(patch().Sf()/patch().magSf());
 186
 187     radiativeIntensityRay& ray =
 188         const_cast<radiativeIntensityRay&>(dom.IRay(rayId));
 189
 190     ray.Qr().boundaryField()[patchI] += Iw*(n & ray.dAve());
 191
 192     const scalarField Eb
 193     (
 194         dom.blackBody().bLambda(lambdaId).boundaryField()[patchI]
 195     );
 196
 197     scalarField temissivity = emissivity();
 198
 199     forAll(Iw, faceI)
 200     {
 201         scalar Ir = 0.0;
 202         for (label rayI=0; rayI < dom.nRay(); rayI++)
 203         {
 204             const vector& d = dom.IRay(rayI).d();
 205
 206             const scalarField& IFace =
 207                 dom.IRay(rayI).ILambda(lambdaId).boundaryField()[patchI];
 208
 209             if ((-n[faceI] & d) < 0.0) // qin into the wall
 210             {
 211                 const vector& dAve = dom.IRay(rayI).dAve();
 212                 Ir = Ir + IFace[faceI]*mag(n[faceI] & dAve);
 213             }
 214         }
 215
 216         const vector& d = dom.IRay(rayId).d();
 217
 218         if ((-n[faceI] & d) > 0.0)
 219         {
 220             // direction out of the wall
 221             refGrad()[faceI] = 0.0;
 222             valueFraction()[faceI] = 1.0;
 223             refValue()[faceI] =
 224                 (
 225                     Ir*(1.0 - temissivity[faceI])
 226                   + temissivity[faceI]*Eb[faceI]
 227                 )/pi;
 228         }
 229         else
 230         {
 231             // direction into the wall
 232             valueFraction()[faceI] = 0.0;
 233             refGrad()[faceI] = 0.0;
 234             refValue()[faceI] = 0.0; //not used
 235         }
 236     }
 237
 238     // Restore tag
 239     UPstream::msgType() = oldTag;
 240
 241     mixedFvPatchScalarField::updateCoeffs();
 242 }
 243
 244
 245 void Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::write
 246 (
 247     Ostream& os
 248 ) const
 249 {
 250     mixedFvPatchScalarField::write(os);
 251     radiationCoupledBase::write(os);
 252     os.writeKeyword("T") << TName_ << token::END_STATEMENT << nl;
 253
 254 }
 255
 256
 257 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 258
 259 namespace Foam
 260 {
 261 namespace radiation
 262 {
 263     makePatchTypeField
 264     (
 265         fvPatchScalarField,
 266         wideBandDiffusiveRadiationMixedFvPatchScalarField
 267     );
 268 }
 269 }
 270
 271
 272 // ************************************************************************* //