5fd30443f3
The momentum equation central coefficient and drag matrix is formulated, inverted and used to eliminate the drag terms from each of the phase momentum equations which are combined for formulate a drag-implicit pressure equation. This eliminates the lagged drag terms from the previous formulation which significantly improves convergence for small particle and Euler-VoF high-drag cases. It would also be possible to refactor the virtual-mass terms and include the central coefficients of the phase acceleration terms in the drag matrix before inversion to further improve the implicitness of the phase momentum-pressure coupling for bubbly flows. This work is pending funding.
125 lines
3.9 KiB
C++
125 lines
3.9 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration | Website: https://openfoam.org
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\\ / A nd | Copyright (C) 2017-2023 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::PopulationBalancePhaseSystem
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Description
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Class which provides population balance functionality. Stores the mass
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transfer rates resulting from coalescence, breakup or drift across
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representative phases that collectively define a dispersed phase.
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See also
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Foam::diameterModels::populationBalanceModel
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SourceFiles
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PopulationBalancePhaseSystem.C
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\*---------------------------------------------------------------------------*/
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#ifndef PopulationBalancePhaseSystem_H
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#define PopulationBalancePhaseSystem_H
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#include "phaseSystem.H"
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#include "populationBalanceModel.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class PopulationBalancePhaseSystem Declaration
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\*---------------------------------------------------------------------------*/
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template<class BasePhaseSystem>
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class PopulationBalancePhaseSystem
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:
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public BasePhaseSystem
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{
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// Private data
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//- Population balances
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PtrList<diameterModels::populationBalanceModel> populationBalances_;
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public:
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// Constructors
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//- Construct from fvMesh
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PopulationBalancePhaseSystem(const fvMesh&);
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//- Destructor
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virtual ~PopulationBalancePhaseSystem();
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// Member Functions
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//- Return the mass transfer rate for an interface
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virtual tmp<volScalarField> dmdtf(const phaseInterfaceKey& key) const;
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//- Return the mass transfer rates for each phase
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virtual PtrList<volScalarField> dmdts() const;
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//- Return the momentum transfer matrices for the cell-based algorithm
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virtual autoPtr<phaseSystem::momentumTransferTable> momentumTransfer();
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//- Return the momentum transfer matrices for the face-based algorithm
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virtual autoPtr<phaseSystem::momentumTransferTable> momentumTransferf();
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//- Return the heat transfer matrices
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virtual autoPtr<phaseSystem::heatTransferTable> heatTransfer() const;
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//- Return the specie transfer matrices
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virtual autoPtr<phaseSystem::specieTransferTable>
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specieTransfer() const;
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//- Solve all population balance equations
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virtual void solve(const PtrList<volScalarField>& rAs);
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//- Correct derived properties
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virtual void correct();
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//- Read base phaseProperties dictionary
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virtual bool read();
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#ifdef NoRepository
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#include "PopulationBalancePhaseSystem.C"
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#endif
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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