fluidSolver.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
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::solvers::fluidSolver
 
Description
    Base solver module for fluid solvers.
 
    Provides Courant number time-step control and continuity checking.
 
    Reference:
    \verbatim
        Greenshields, C. J., & Weller, H. G. (2022).
        Notes on Computational Fluid Dynamics: General Principles.
        CFD Direct Ltd.: Reading, UK.
    \endverbatim
 
SourceFiles
    fluidSolver.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef fluidSolver_H
#define fluidSolver_H
 
#include "solver.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace solvers
{
 
/*---------------------------------------------------------------------------*\
                          Class fluidSolver Declaration
\*---------------------------------------------------------------------------*/
 
class fluidSolver
:
    public solver
{
    // Control parameters
 
        //- Maximum allowed Courant number
        scalar maxCo;
 
        //- Maximum time-step
        scalar maxDeltaT_;
 
        //- Switch to check the mesh Courant number after mesh change
        bool checkMeshCourantNo;
 
 
    // Continuity properties
 
        //- Current cumulative continuity error
        scalar cumulativeContErr;
 
 
    // Private Member Functions
 
        //- Correct the cached Courant numbers
        template<class RhoType>
        inline void correctCoNum
        (
            const RhoType& rho,
            const surfaceScalarField& phi
        );
 
 
protected:
 
        //- Switch to correct the flux after mesh change
        bool correctPhi;
 
        //- Current maximum Courant number for time-step control
        scalar CoNum;
 
        //- Read controls
        void readControls();
 
        //- Check mesh Courant numbers for moving mesh cases
        void meshCourantNo() const;
 
        //- Correct the cached Courant numbers
        void correctCoNum(const surfaceScalarField& phi);
 
        //- Correct the cached Courant numbers
        void correctCoNum
        (
            const volScalarField& rho,
            const surfaceScalarField& phi
        );
 
        //- Calculate and print the continuity errors
        void continuityErrors
        (
            const surfaceScalarField& phi
        );
 
        //- Calculate and print the continuity errors
        void continuityErrors
        (
            const volScalarField& rho,
            const volScalarField& thermoRho,
            const surfaceScalarField& phi
        );
 
 
public:
 
    //- Runtime type information
    TypeName("fluidSolver");
 
 
    // Constructors
 
        //- Construct from region mesh
        fluidSolver(fvMesh& mesh);
 
        //- Disallow default bitwise copy construction
        fluidSolver(const fluidSolver&) = delete;
 
 
    //- Destructor
    virtual ~fluidSolver();
 
 
    // Member Functions
 
        //- Return the current maximum time-step for stable solution
        virtual scalar maxDeltaT() const;
 
 
    // Member Operators
 
        //- Disallow default bitwise assignment
        void operator=(const fluidSolver&) = delete;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace solvers
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //