shockFluid.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::solvers::shockFluid
 
Description
    Solver module for density-based solution of compressible flow
 
    Based on central-upwind schemes of Kurganov and Tadmor with support for
    mesh-motion and topology change.
 
    Reference:
    \verbatim
        Greenshields, C. J., Weller, H. G., Gasparini, L.,
        & Reese, J. M. (2010).
        Implementation of semi‐discrete, non‐staggered central schemes
        in a colocated, polyhedral, finite volume framework,
        for high‐speed viscous flows.
        International journal for numerical methods in fluids, 63(1), 1-21.
    \endverbatim
 
SourceFiles
    shockFluid.C
 
See also
    Foam::solvers::fluidSolver
    Foam::solvers::incompressibleFluid
 
\*---------------------------------------------------------------------------*/
 
#ifndef shockFluid_H
#define shockFluid_H
 
#include "fluidSolver.H"
#include "psiThermo.H"
#include "compressibleMomentumTransportModel.H"
#include "fluidThermoThermophysicalTransportModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace solvers
{
 
/*---------------------------------------------------------------------------*\
                          Class shockFluid Declaration
\*---------------------------------------------------------------------------*/
 
class shockFluid
:
    public fluidSolver
{
 
protected:
 
    // Thermophysical properties
 
        //- Pointer to the fluid thermophysical properties
        autoPtr<psiThermo> thermoPtr_;
 
        //- Reference to the fluid thermophysical properties
        psiThermo& thermo_;
 
        //- Reference to the pressure field
        volScalarField& p_;
 
        //- The continuity density field
        volScalarField rho_;
 
 
    // Kinematic properties
 
        //- Velocity field
        volVectorField U_;
 
        //- Mass-flux field
        surfaceScalarField phi_;
 
        //- Kinetic energy field
        //  Used in the energy equation
        volScalarField K;
 
 
    // Momentum transport
 
        bool inviscid;
 
        //- Pointer to the momentum transport model
        autoPtr<compressible::momentumTransportModel> momentumTransport;
 
 
    // Thermophysical transport
 
        autoPtr<fluidThermoThermophysicalTransportModel>
            thermophysicalTransport;
 
 
    // Controls
 
        word fluxScheme;
 
 
    // Cached temporary fields
 
        tmp<surfaceScalarField> pos;
        tmp<surfaceScalarField> neg;
 
        tmp<surfaceScalarField> rho_pos;
        tmp<surfaceScalarField> rho_neg;
 
        tmp<surfaceVectorField> rhoU_pos;
        tmp<surfaceVectorField> rhoU_neg;
 
        tmp<surfaceVectorField> U_pos;
        tmp<surfaceVectorField> U_neg;
 
        tmp<surfaceScalarField> p_pos;
        tmp<surfaceScalarField> p_neg;
 
        tmp<surfaceScalarField> a_pos;
        tmp<surfaceScalarField> a_neg;
 
        tmp<surfaceScalarField> aSf;
 
        tmp<surfaceScalarField> aphiv_pos;
        tmp<surfaceScalarField> aphiv_neg;
 
        tmp<surfaceVectorField> devTau;
 
        //- Optional LTS reciprocal time-step field
        tmp<volScalarField> trDeltaT;
 
 
private:
 
    // Private Member Functions
 
        //- Set rDeltaT for LTS
        void setRDeltaT(const surfaceScalarField& amaxSf);
 
        //- Correct the cached Courant numbers
        void correctCoNum(const surfaceScalarField& amaxSf);
 
        //- Construct the continuity equation and correct the density
        void correctDensity();
 
        //- Interpolate field vf according to direction dir
        template<class Type>
        inline tmp<SurfaceField<Type>> interpolate
        (
            const VolField<Type>& vf,
            const surfaceScalarField& dir,
            const word& reconFieldName = word::null
        )
        {
            tmp<SurfaceField<Type>> tsf
            (
                fvc::interpolate
                (
                    vf,
                    dir,
                    "reconstruct("
                  + (reconFieldName != word::null ? reconFieldName : vf.name())
                  + ')'
                )
            );
 
            SurfaceField<Type>& sf = tsf.ref();
 
            sf.rename(vf.name() + '_' + dir.name());
 
            return tsf;
        }
 
        void fluxPredictor();
 
        void clearTemporaryFields();
 
 
public:
 
    // Public Data
 
        //- Reference to the fluid thermophysical properties
        const psiThermo& thermo;
 
        //- Reference to the pressure field
        const volScalarField& p;
 
        //- Reference to the continuity density field
        const volScalarField& rho;
 
        //- Reference to the velocity field
        const volVectorField& U;
 
        //- Reference to the mass-flux field
        const surfaceScalarField& phi;
 
 
    //- Runtime type information
    TypeName("shockFluid");
 
 
    // Constructors
 
        //- Construct from region mesh
        shockFluid(fvMesh& mesh);
 
        //- Disallow default bitwise copy construction
        shockFluid(const shockFluid&) = delete;
 
 
    //- Destructor
    virtual ~shockFluid();
 
 
    // 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();
 
        //- Corrections that follow mesh motion
        virtual void motionCorrector();
 
        //- 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 shockFluid&) = delete;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace solvers
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //