f1ab9882c7
This is so that stitching is complete across all regions before any FV operations are attempted.
282 lines
7.8 KiB
C++
282 lines
7.8 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) 2022-2023 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::VoFSolver
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Description
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Base solver module base-class for the solution of immiscible fluids using
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a VOF (volume of fluid) phase-fraction based interface capturing approach,
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with optional mesh motion and mesh topology changes including adaptive
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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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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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VoFSolver.C
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See also
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Foam::solvers::fluidSolver
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\*---------------------------------------------------------------------------*/
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#ifndef VoFSolver_H
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#define VoFSolver_H
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#include "fluidSolver.H"
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#include "VoFMixture.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 VoFSolver Declaration
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\*---------------------------------------------------------------------------*/
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class VoFSolver
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:
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public fluidSolver
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{
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protected:
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// Phase properties
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//- The compressible two-phase mixture
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autoPtr<VoFMixture> mixturePtr_;
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VoFMixture& mixture_;
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//- Name of the alpha convection scheme
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const word divAlphaName;
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//- Phase-fraction flux Courant number
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scalar alphaCoNum;
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// Kinematic properties
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//- Velocity field
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volVectorField U_;
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//- Volumetric flux field
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surfaceScalarField phi_;
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// Thermophysical properties
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//- Buoyancy force
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solvers::buoyancy buoyancy;
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//- Reference to the buoyant pressure for buoyant cases
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// otherwise to the pressure
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volScalarField& p_rgh;
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//- Reference to the mixture continuity density field
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const volScalarField& rho;
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// Kinematic properties
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//- Mass flux field
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surfaceScalarField rhoPhi;
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// Optional models
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//- MRF zone list
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IOMRFZoneList MRF;
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// Cached temporary fields
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//- Inverse momentum equation diagonal
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// Used to correct phi following mesh changes
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autoPtr<volScalarField> rAU;
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//- Pointer to the surface momentum field
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// used to recreate the flux after mesh-change
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autoPtr<surfaceVectorField> Uf;
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//- Pointer to the momentum divergence field
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// used in correctPhi to ensure the corrected phi has the
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// same divergence
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autoPtr<volScalarField> divU;
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//- Optional LTS reciprocal time-step field
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tmp<volScalarField> trDeltaT;
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//- Cached momentum matrix
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// shared between the momentum predictor and pressure corrector
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tmp<fvVectorMatrix> tUEqn;
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private:
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// Private Member Functions
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//- Set rDeltaT for LTS
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void setRDeltaT();
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protected:
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// Protected Member Functions
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//- Set or update the cached rAU
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void setrAU(const fvVectorMatrix& UEqn);
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//- Clear the cached rAU is no longer needed
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void clearrAU();
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//- Correct the cached Courant numbers
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virtual void correctCoNum() = 0;
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//- Adjust the rDeltaT in the vicinity of the interface
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virtual void setInterfaceRDeltaT(volScalarField& rDeltaT) = 0;
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//- Calculate and print the continuity errors
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void continuityErrors();
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//- Return the pressure reference
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virtual const Foam::pressureReference& pressureReference() const = 0;
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//- Is the flow incompressible?
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virtual bool incompressible() const = 0;
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//- Is the flow divergent?
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// i.e. compressible or include phase-fraction sources
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virtual bool divergent() const = 0;
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//- Return the mixture compressibility/density
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// Used by CorrectPhi for compressible mixtures following mesh change
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virtual tmp<volScalarField> psiByRho() const = 0;
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//- Return the momentum equation stress term
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virtual tmp<fvVectorMatrix> divDevTau(volVectorField& U) = 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() = 0;
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//- Return the interface surface tension force for the momentum equation
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virtual tmp<surfaceScalarField> surfaceTensionForce() const = 0;
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public:
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// Public Data
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//- Reference to the VoF mixture
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const VoFMixture& mixture;
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//- Reference to the velocity field
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const volVectorField& U;
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//- Reference to the mass-flux field
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const surfaceScalarField& phi;
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//- Runtime type information
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TypeName("VoFSolver");
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// Constructors
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//- Construct from region mesh
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VoFSolver(fvMesh& mesh, autoPtr<VoFMixture>);
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//- Disallow default bitwise copy construction
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VoFSolver(const VoFSolver&) = delete;
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//- Destructor
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virtual ~VoFSolver();
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// Member Functions
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//- Return the current maximum time-step for stable solution
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virtual scalar maxDeltaT() const;
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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 to move the mesh
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virtual void moveMesh();
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//- Corrections that follow mesh motion
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virtual void motionCorrector();
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//- Called at the start of the PIMPLE loop
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virtual void prePredictor() = 0;
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//- Construct and optionally solve the momentum equation
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virtual void momentumPredictor();
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//- Construct and solve the energy equation,
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// convert to temperature
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// and update thermophysical and transport properties
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virtual void thermophysicalPredictor() = 0;
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//- Construct and solve the pressure equation in the PISO loop
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virtual void pressureCorrector() = 0;
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//- Called after the PIMPLE loop at the end of the time-step
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virtual void postSolve();
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// Member Operators
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//- Disallow default bitwise assignment
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void operator=(const VoFSolver&) = 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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