reactingOneDim.H

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    Copyright (C) 2016 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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    the Free Software Foundation, either version 3 of the License, or
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Class
    Foam::regionModels::pyrolysisModels::reactingOneDim
 
Description
    Reacting, 1-D pyrolysis model
    NOTE: The moveMesh option can only be applied to solid reaction such as:
          PMMA -> gas at the moment.
 
SourceFiles
    reactingOneDim.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef reactingOneDim_H
#define reactingOneDim_H
 
#include "pyrolysisModel.H"
#include "basicSolidChemistryModel.H"
#include "radiationModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace regionModels
{
namespace pyrolysisModels
{
 
 
/*---------------------------------------------------------------------------*\
                      Class reactingOneDim Declaration
\*---------------------------------------------------------------------------*/
 
class reactingOneDim
:
    public pyrolysisModel
{
private:
 
    // Private member functions
 
        //- No copy construct
        reactingOneDim(const reactingOneDim&) = delete;
 
        //- No copy assignment
        void operator=(const reactingOneDim&) = delete;
 
        //- Read model controls
        void readReactingOneDimControls();
 
 
protected:
 
    // Protected data
 
        //- Reference to solid thermo
        autoPtr<solidReactionThermo> solidThermo_;
 
        //- Reference to the solid chemistry model
        autoPtr<basicSolidChemistryModel> solidChemistry_;
 
        //- Pointer to radiation model
        autoPtr<radiation::radiationModel> radiation_;
 
 
        // Reference to solid thermo properties
 
            //- Density [kg/m3]
            volScalarField rho_;
 
            //- List of solid components
            PtrList<volScalarField>& Ys_;
 
            // Non-const access to enthalpy
            volScalarField& h_;
 
 
        // Solution parameters
 
            //- Number of non-orthogonal correctors
            label nNonOrthCorr_;
 
            //- Maximum diffusivity
            scalar maxDiff_;
 
            //- Minimum delta for combustion
            scalar minimumDelta_;
 
 
        // Fields
 
            //- Total gas mass flux to the primary region [kg/m2/s]
            surfaceScalarField phiGas_;
 
            //- Sensible enthalpy gas flux [J/m2/s]
            volScalarField phiHsGas_;
 
            //- Heat release rate [J/s/m3]
            volScalarField chemistryQdot_;
 
 
        // Source term fields
 
            //- Coupled region radiative heat flux [W/m2]
            //  Requires user to input mapping info for coupled patches
            //volScalarField qrCoupled_;
 
            //- In depth radiative heat flux [W/m2]
            volScalarField qr_;
 
 
        // Checks
 
            //- Cumulative lost mass of the condensed phase [kg]
            dimensionedScalar lostSolidMass_;
 
            //- Cumulative mass generation of the gas phase [kg]
            dimensionedScalar addedGasMass_;
 
            //- Total mass gas flux at the pyrolysing walls [kg/s]
            scalar totalGasMassFlux_;
 
            //- Total heat release rate [J/s]
            dimensionedScalar totalHeatRR_;
 
 
        // Options
 
            //- Add gas enthalpy source term
            bool  gasHSource_;
 
            //- Add in depth radiation source term
            bool  qrHSource_;
 
            //- Use chemistry solvers (ode or sequential)
            bool useChemistrySolvers_;
 
 
    // Protected member functions
 
        //- Read control parameters from dictionary
        bool read();
 
        //- Read control parameters from dict
        bool read(const dictionary& dict);
 
        //- Update submodels
        void updateFields();
 
        //- Update/move mesh based on change in mass
        void updateMesh(const scalarField& mass0);
 
        //- Update radiative flux in pyrolysis region
        void updateqr();
 
        //- Update enthalpy flux for pyrolysis gases
        void updatePhiGas();
 
        //- Mass check
        void calculateMassTransfer();
 
 
        // Equations
 
            //- Solve continuity equation
            void solveContinuity();
 
            //- Solve energy
            void solveEnergy();
 
            //- Solve solid species mass conservation
            void solveSpeciesMass();
 
 
public:
 
    //- Runtime type information
    TypeName("reactingOneDim");
 
 
    // Constructors
 
        //- Construct from type name and mesh
        reactingOneDim
        (
            const word& modelType,
            const fvMesh& mesh,
            const word& regionType
        );
 
        //- Construct from type name, mesh and dictionary
        reactingOneDim
        (
            const word& modelType,
            const fvMesh& mesh,
            const dictionary& dict,
            const word& regionType
        );
 
 
 
 
    //- Destructor
    virtual ~reactingOneDim();
 
 
    // Member Functions
 
        // Access
 
            //- Fields
 
                //- Return const density [Kg/m3]
                const volScalarField& rho() const;
 
                //- Return const temperature [K]
                virtual const volScalarField& T() const;
 
                //- Return specific heat capacity [J/kg/K]
                virtual const tmp<volScalarField> Cp() const;
 
                //- Return the region absorptivity [1/m]
                virtual tmp<volScalarField> kappaRad() const;
 
                //- Return the region thermal conductivity [W/m/k]
                virtual tmp<volScalarField> kappa() const;
 
                //- Return the total gas mass flux to primary region [kg/m2/s]
                virtual const surfaceScalarField& phiGas() const;
 
 
        // Solution parameters
 
            //- Return the number of non-orthogonal correctors
            inline label nNonOrthCorr() const;
 
            //- Return max diffusivity allowed in the solid
            virtual scalar maxDiff() const;
 
 
        // Helper functions
 
            //- External hook to add mass to the primary region
            virtual scalar addMassSources
            (
                const label patchi,            // patchi on primary region
                const label facei              // facei of patchi
            );
 
            //- Mean diffusion number of the solid region
            virtual scalar solidRegionDiffNo() const;
 
 
       // Evolution
 
            //- Pre-evolve region
            virtual void preEvolveRegion();
 
            //- Evolve the pyrolysis equations
            virtual void evolveRegion();
 
 
       // I-O
 
            //- Provide some feedback
            virtual void info();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace pyrolysisModels
} // End namespace regionModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "reactingOneDimI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //