incompressibleFluid.H

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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
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Class
    Foam::solvers::incompressibleFluid
 
Description
    Solver module for steady or transient turbulent flow of incompressible
    isothermal fluids with optional mesh motion and change.
 
    Uses the flexible PIMPLE (PISO-SIMPLE) solution for time-resolved and
    pseudo-transient and steady simulations.
 
    Optional fvModels and fvConstraints are provided to enhance the simulation
    in many ways including adding various sources, constraining or limiting
    the solution.
 
    Reference:
    \verbatim
        Greenshields, C. J., & Weller, H. G. (2022).
        Notes on Computational Fluid Dynamics: General Principles.
        CFD Direct Ltd.: Reading, UK.
    \endverbatim
 
SourceFiles
    incompressibleFluid.C
 
See also
    Foam::solvers::fluidSolver
    Foam::solvers::isothermalFluid
 
\*---------------------------------------------------------------------------*/
 
#ifndef incompressibleFluid_H
#define incompressibleFluid_H
 
#include "fluidSolver.H"
#include "viscosityModel.H"
#include "incompressibleMomentumTransportModel.H"
#include "pressureReference.H"
#include "IOMRFZoneList.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace solvers
{
 
/*---------------------------------------------------------------------------*\
                          Class incompressibleFluid Declaration
\*---------------------------------------------------------------------------*/
 
class incompressibleFluid
:
    public fluidSolver
{
 
protected:
 
    // Pressure
 
        //- Pressure field
        volScalarField p_;
 
        //- Pressure reference
        Foam::pressureReference pressureReference;
 
 
    // Kinematic properties
 
        //- Velocity field
        volVectorField U_;
 
        //- Volumetric-flux field
        surfaceScalarField phi_;
 
 
    // Momentum transport
 
        //- Kinematic viscosity model
        autoPtr<viscosityModel> viscosity;
 
        //- Pointer to the momentum transport model
        autoPtr<incompressible::momentumTransportModel> momentumTransport;
 
 
    // Optional models
 
        //- MRF zone list
        IOMRFZoneList MRF;
 
 
    // Cached temporary fields
 
        //- Pointer to the surface momentum field
        //  used to recreate the flux after mesh-change
        autoPtr<surfaceVectorField> Uf;
 
        //- Optional LTS reciprocal time-step field
        tmp<volScalarField> trDeltaT;
 
        //- Cached momentum matrix
        //  shared between the momentum predictor and pressure corrector
        tmp<fvVectorMatrix> tUEqn;
 
 
    // Protected Member Functions
 
        //- Set rDeltaT for LTS
        void setRDeltaT();
 
        //- Correct the cached Courant numbers
        void correctCoNum();
 
        //- Calculate and print the continuity errors
        void continuityErrors();
 
        //- Construct the pressure equation
        //  and correct the pressure and velocity
        virtual void correctPressure();
 
 
public:
 
    // Public Data
 
        //- Reference to the pressure field
        const volScalarField& p;
 
        //- Reference to the velocity field
        const volVectorField& U;
 
        //- Reference to the volumetric-flux field
        const surfaceScalarField& phi;
 
 
    //- Runtime type information
    TypeName("incompressibleFluid");
 
 
    // Constructors
 
        //- Construct from region mesh
        incompressibleFluid(fvMesh& mesh);
 
        //- Disallow default bitwise copy construction
        incompressibleFluid(const incompressibleFluid&) = delete;
 
 
    //- Destructor
    virtual ~incompressibleFluid();
 
 
    // Member Functions
 
        //- Called at the start of the time-step, before the PIMPLE loop
        virtual void preSolve();
 
        //- Called at the start of the PIMPLE loop to move the mesh
        virtual void moveMesh();
 
        //- Called at the start of the PIMPLE loop
        virtual void prePredictor();
 
        //- Construct and optionally solve the momentum equation
        virtual void momentumPredictor();
 
        //- Construct and solve the energy equation,
        //  convert to temperature
        //  and update thermophysical and transport properties
        virtual void thermophysicalPredictor();
 
        //- Construct and solve the pressure equation in the PISO loop
        virtual void pressureCorrector();
 
        //- Correct the momentum and thermophysical transport modelling
        virtual void postCorrector();
 
        //- Called after the PIMPLE loop at the end of the time-step
        virtual void postSolve();
 
 
    // Member Operators
 
        //- Disallow default bitwise assignment
        void operator=(const incompressibleFluid&) = delete;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace solvers
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //