06893a0bc6
Much of the VoF functionality, particularly relating to momentum solution, is independent of the number of phases and it is useful to hold this generic VoF data and functionality in an abstract base-class and derive twoPhaseVoFSolver and multiphaseVoFSolver from it, adding two-phase and multiphase functionality respectively.
196 lines
5.5 KiB
C++
196 lines
5.5 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) 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::solvers::twoPhaseVoFSolver
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Description
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Solver module base-class for for 2 immiscible fluids using a VOF (volume
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of fluid) phase-fraction based interface capturing approach, with optional
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mesh motion and mesh topology changes including adaptive re-meshing.
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The momentum and other fluid properties are of the "mixture" and a single
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momentum equation is solved.
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Either mixture or two-phase transport modelling may be selected. In the
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mixture approach a single laminar, RAS or LES model is selected to model the
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momentum stress. In the Euler-Euler two-phase approach separate laminar,
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RAS or LES selected models are selected for each of the phases.
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Uses the flexible PIMPLE (PISO-SIMPLE) solution for time-resolved and
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pseudo-transient and steady simulations.
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Optional fvModels and fvConstraints are provided to enhance the simulation
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in many ways including adding various sources, Lagrangian
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particles, surface film etc. and constraining or limiting the solution.
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SourceFiles
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twoPhaseVoFSolver.C
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See also
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Foam::solvers::fluidSolver
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\*---------------------------------------------------------------------------*/
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#ifndef twoPhaseVoFSolver_H
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#define twoPhaseVoFSolver_H
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#include "VoFSolver.H"
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#include "twoPhaseVoFMixture.H"
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#include "interfaceProperties.H"
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#include "buoyancy.H"
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#include "pressureReference.H"
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#include "IOMRFZoneList.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace solvers
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{
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/*---------------------------------------------------------------------------*\
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Class twoPhaseVoFSolver Declaration
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\*---------------------------------------------------------------------------*/
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class twoPhaseVoFSolver
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:
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public VoFSolver
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{
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protected:
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// Phase properties
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//- Reference to the twoPhaseVoFMixture
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twoPhaseVoFMixture& mixture;
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//- Reference to the phase1-fraction
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volScalarField& alpha1;
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//- Reference to the phase2-fraction
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volScalarField& alpha2;
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//- Switch indicating if this is a restart
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bool alphaRestart;
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// Interface properties
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interfaceProperties interface;
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// Kinematic properties
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// Phase-1 volumetric flux
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surfaceScalarField alphaPhi1;
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// Cached temporary fields
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//- MULES Correction
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tmp<surfaceScalarField> talphaPhi1Corr0;
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private:
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// Private Member Functions
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//- Correct the cached Courant numbers
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void correctCoNum();
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//- Solve for the phase-fractions
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void alphaSolve(const dictionary& alphaControls);
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//- Solve for the phase-fractions
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void alphaPredictor();
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protected:
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// Protected Member Functions
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//- Adjust the rDeltaT in the vicinity of the interface
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virtual void setInterfaceRDeltaT(volScalarField& rDeltaT);
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//- Calculate the alpha equation sources
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virtual void alphaSuSp
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(
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tmp<volScalarField::Internal>& Su,
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tmp<volScalarField::Internal>& Sp
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) = 0;
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//- Correct the interface properties following mesh-change
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// and phase-fraction update
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virtual void correctInterface();
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//- Return the interface surface tension force for the momentum equation
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virtual tmp<surfaceScalarField> surfaceTensionForce() const;
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public:
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//- Runtime type information
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TypeName("twoPhaseVoFSolver");
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// Constructors
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//- Construct from region mesh
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twoPhaseVoFSolver(fvMesh& mesh, autoPtr<twoPhaseVoFMixture>);
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//- Disallow default bitwise copy construction
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twoPhaseVoFSolver(const twoPhaseVoFSolver&) = delete;
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//- Destructor
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virtual ~twoPhaseVoFSolver();
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// Member Functions
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//- Called at the start of the time-step, before the PIMPLE loop
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virtual void preSolve();
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//- Called at the start of the PIMPLE loop
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virtual void prePredictor();
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// Member Operators
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//- Disallow default bitwise assignment
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void operator=(const twoPhaseVoFSolver&) = delete;
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace solvers
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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