/*---------------------------------------------------------------------------*\ ========= | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / O peration | \\ / A nd | Copyright (C) 2015-2017 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/>. Class Foam::compressible::alphatWallBoilingWallFunctionFvPatchScalarField Group grpCmpWallFunctions Description A thermal wall function for simulation of subcooled nucleate wall boiling with runtime selctable submodels for: - wall heat flux partitioning model - nucleation site density - bubble departure frequency - bubble departure diameter Implements a version of the well-known RPI wall boiling model (Kurul & Podowski, 1991). The model implementation is similar to the model described by Peltola & Pättikangas (2012) but has been extended with the wall heat flux partitioning models. References: \verbatim "On the modeling of multidimensional effects in boiling channels" Kurul, N., Podowski, M.Z., ANS Proceedings, National Heat Transfer Conference, Minneapolis, Minnesota, USA, July 28-31, 1991, ISBN: 0-89448-162-1, pp. 30-40 \endverbatim \verbatim "Development and validation of a boiling model for OpenFOAM multiphase solver" Peltola, J., Pättikangas, T.J.H., CFD4NRS-4 Conference Proceedings, paper 59, Daejeon, Korea, September 10-12 2012 \endverbatim Usage \table Property | Description | Required | Default value phaseType | 'vapor' or 'liquid' | yes | relax |wall boiling model relaxation| yes | Prt | inherited from alphatPhaseChangeJayatillekeWallFunction Cmu | inherited from alphatPhaseChangeJayatillekeWallFunction kappa | inherited from alphatPhaseChangeJayatillekeWallFunction E | inherited from alphatPhaseChangeJayatillekeWallFunction dmdt | phase change mass flux | yes | value | initial alphat value | yes | if phaseType 'vapor': partitioningModel| | yes | if phaseType 'liquid': partitioningModel| | yes | nucleationSiteModel| | yes | departureDiamModel| | yes | departureFreqModel| | yes | \endtable NOTE: Runtime selectabale submodels may require model specific entries Example usage: \verbatim hotWall { type compressible::alphatWallBoiling2WallFunction; phaseType liquid; Prt 0.85; Cmu 0.09; kappa 0.41; E 9.8; relax 0.001; dmdt uniform 0; partitioningModel { type Lavieville; alphaCrit 0.2; } nucleationSiteModel { type LemmertChawla; } departureDiamModel { type TolubinskiKostanchuk; } departureFreqModel { type Cole; } value uniform 0.01; \endverbatim See also Foam::alphatPhaseChangeJayatillekeWallFunctionFvPatchField SourceFiles alphatWallBoilingWallFunctionFvPatchScalarField.C \*---------------------------------------------------------------------------*/ #ifndef compressiblealphatWallBoilingWallFunctionFvPatchScalarField_H #define compressiblealphatWallBoilingWallFunctionFvPatchScalarField_H #include "alphatPhaseChangeJayatillekeWallFunctionFvPatchScalarField.H" #include "partitioningModel.H" #include "nucleationSiteModel.H" #include "departureDiameterModel.H" #include "departureFrequencyModel.H" // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // namespace Foam { namespace compressible { /*---------------------------------------------------------------------------*\ Class alphatWallBoilingWallFunctionFvPatchScalarField Declaration \*---------------------------------------------------------------------------*/ class alphatWallBoilingWallFunctionFvPatchScalarField : public alphatPhaseChangeJayatillekeWallFunctionFvPatchScalarField { public: // Data types //- Enumeration listing the possible operational modes enum phaseType { vaporPhase, liquidPhase }; private: // Private data //- Heat source type names static const NamedEnum<phaseType, 2> phaseTypeNames_; //- Heat source type phaseType phaseType_; //- dmdt relaxationFactor scalar relax_; //- Patch face area by cell volume scalarField AbyV_; //- Convective turbulent thermal diffusivity scalarField alphatConv_; //- Departure diameter field scalarField dDep_; //- Quenching surface heat flux scalarField qq_; //- Run-time selected heat flux partitioning model autoPtr<wallBoilingModels::partitioningModel> partitioningModel_; //- Run-time selected nucleation site density model autoPtr<wallBoilingModels::nucleationSiteModel> nucleationSiteModel_; //- Run-time selected bubble departure diameter model autoPtr<wallBoilingModels::departureDiameterModel> departureDiamModel_; //- Run-time selected bubble departure frequency model autoPtr<wallBoilingModels::departureFrequencyModel> departureFreqModel_; public: //- Runtime type information TypeName("compressible::alphatWallBoilingWallFunction"); // Constructors //- Construct from patch and internal field alphatWallBoilingWallFunctionFvPatchScalarField ( const fvPatch&, const DimensionedField<scalar, volMesh>& ); //- Construct from patch, internal field and dictionary alphatWallBoilingWallFunctionFvPatchScalarField ( const fvPatch&, const DimensionedField<scalar, volMesh>&, const dictionary& ); //- Construct by mapping given // alphatWallBoilingWallFunctionFvPatchScalarField // onto a new patch alphatWallBoilingWallFunctionFvPatchScalarField ( const alphatWallBoilingWallFunctionFvPatchScalarField&, const fvPatch&, const DimensionedField<scalar, volMesh>&, const fvPatchFieldMapper& ); //- Construct as copy alphatWallBoilingWallFunctionFvPatchScalarField ( const alphatWallBoilingWallFunctionFvPatchScalarField& ); //- Construct and return a clone virtual tmp<fvPatchScalarField> clone() const { return tmp<fvPatchScalarField> ( new alphatWallBoilingWallFunctionFvPatchScalarField(*this) ); } //- Construct as copy setting internal field reference alphatWallBoilingWallFunctionFvPatchScalarField ( const alphatWallBoilingWallFunctionFvPatchScalarField&, const DimensionedField<scalar, volMesh>& ); //- Construct and return a clone setting internal field reference virtual tmp<fvPatchScalarField> clone ( const DimensionedField<scalar, volMesh>& iF ) const { return tmp<fvPatchScalarField> ( new alphatWallBoilingWallFunctionFvPatchScalarField(*this, iF) ); } // Member functions //- Return the departure diameter field const scalarField& dDeparture() const { return dDep_; } //- Return the quenching surface heat flux [W/m2] const scalarField& qq() const { return qq_; } //- Return the evaporation surface heat flux [W/m2] tmp<scalarField> qe() const { return mDotL_/AbyV_; } // Evaluation functions //- Update the coefficients associated with the patch field virtual void updateCoeffs(); // I-O //- Write virtual void write(Ostream&) const; }; // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // } // End namespace compressible } // End namespace Foam // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // #endif // ************************************************************************* //