cloud.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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    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::cloud
 
Description
    Base class for clouds. Provides a basic evolution algorithm, models, and a
    database for caching derived and average fields to avoid unnecessary
    re-calculation.
 
SourceFiles
    cloud.C
    cloudTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef cloud_H
#define cloud_H
 
#include "LagrangianModels.H"
#include "CloudStateField.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
template<class Type>
class CloudDerivedField;
 
template<class Type>
class CloudAverageField;
 
/*---------------------------------------------------------------------------*\
                           Class cloud Declaration
\*---------------------------------------------------------------------------*/
 
class cloud
:
    public regIOobject
{
private:
 
    // Private Data
 
        //- Reference to the mesh
        LagrangianMesh& mesh_;
 
        //- The demand-driven Lagrangian models pointer
        mutable Foam::LagrangianModels* LagrangianModelsPtr_;
 
        //- Derived fields
        #define DECLARE_DERIVED_FIELDS(Type, nullArg)     \
            mutable PtrList<CloudDerivedField<Type>>      \
                CAT3(derived, CAPITALIZE(Type), Fields_);
        FOR_ALL_FIELD_TYPES(DECLARE_DERIVED_FIELDS);
        #undef DECLARE_DERIVED_FIELDS
 
        //- Average fields
        #define DECLARE_AVERAGE_FIELDS(Type, nullArg)     \
            mutable PtrList<CloudAverageField<Type>>      \
                CAT3(average, CAPITALIZE(Type), Fields_);
        FOR_ALL_FIELD_TYPES(DECLARE_AVERAGE_FIELDS);
        #undef DECLARE_AVERAGE_FIELDS
 
        //- Retained state labels
        autoPtr<LagrangianLabelDynamicField> statePtr_;
 
        //- Cell length scale
        scalarField cellLengthScaleVf_;
 
 
    // Private Member Functions
 
        //- Construct and store the Lagrangian mesh, and return a reference
        static LagrangianMesh& mesh
        (
            const polyMesh& pMesh,
            const word& name,
            const IOobject::readOption readOption=IOobject::READ_IF_PRESENT,
            const IOobject::writeOption writeOption=IOobject::AUTO_WRITE
        );
 
        //- Access the derived fields. Only specialisations are defined.
        template<class Type>
        PtrList<CloudDerivedField<Type>>& derivedFields() const;
 
        //- Clear the derived fields
        void clearDerivedFields(const bool final);
 
        //- Access the average fields. Only specialisations are defined.
        template<class Type>
        PtrList<CloudAverageField<Type>>& averageFields() const;
 
        //- Remove values from a sub mesh from the average fields
        void removeFromAverageFields(const LagrangianSubMesh&);
 
        //- Add values from a sub mesh into the average fields
        void addToAverageFields(const LagrangianSubMesh&, const bool final);
 
        //- Correct values from a sub mesh in the average fields
        void correctAverageFields(const LagrangianSubMesh&, const bool final);
 
        //- Clear the average fields
        void clearAverageFields();
 
        //- Reset the average fields
        void resetAverageFields();
 
        //- Return the IO for the retained state labels
        IOobject stateIo(const IOobject::readOption) const;
 
        //- Read and return the retained state labels, if the file exists,
        //  otherwise return an empty pointer
        autoPtr<LagrangianLabelDynamicField> readStates() const;
 
        //- Return the retained state enumerations, if they are available,
        //  otherwise return an empty pointer
        autoPtr<List<LagrangianState>> initialStates() const;
 
        //- Clear the retained state labels
        void clearStates();
 
        //- Store the retained state labels if necessary
        bool storeStates();
 
        //- Store the retained state labels for the given sub-mesh
        void storeStates(const LagrangianSubMesh& subMesh);
 
        //- Calculate the cell length scale for the given sub-mesh
        tmp<LagrangianSubScalarField> cellLengthScale
        (
            const LagrangianSubMesh& subMesh
        ) const;
 
        //- Track through the mesh
        void track
        (
            LagrangianSubScalarSubField& fraction,
            const scalar maxTimeStepFraction,
            const scalar maxCellLengthScaleFraction
        );
 
        //- Dummy write for regIOobject
        virtual bool writeData(Ostream&) const;
 
 
protected:
 
    // Protected Member Functions
 
        //- Return the acceleration with which to do second-order tracking
        virtual tmp<LagrangianSubVectorField> dUdt
        (
            const LagrangianSubMesh&
        ) const = 0;
 
        //- Do we need to re-calculate particles that are modified?
        virtual bool reCalculateModified() = 0;
 
        //- Update the cloud properties
        virtual void calculate
        (
            const LagrangianSubScalarField& deltaT,
            const bool final
        ) = 0;
 
        //- Partition hook
        virtual void partition();
 
 
public:
 
    // Public Static Data
 
        //- Run-time type information
        TypeName("cloud");
 
 
    // Public Data
 
        //- Context in which this cloud is used
        const enum contextType { unknown, functionObject, fvModel } context;
 
        //- Tracking method
        const enum trackingType { linear, parabolic } tracking;
 
        //- Velocity
        CloudStateField<vector> U;
 
 
    //- Declare run-time constructor selection table
    declareRunTimeSelectionTable
    (
        autoPtr,
        cloud,
        LagrangianMesh,
        (
            LagrangianMesh& mesh,
            const contextType context,
            const dictionary& dict
        ),
        (mesh, context, dict)
    );
 
 
    // Constructors
 
        //- Construct from a mesh and context. Reads the velocity field.
        cloud(LagrangianMesh& mesh, const contextType context);
 
        //- Construct from a mesh, context and a specified velocity field
        cloud
        (
            LagrangianMesh& mesh,
            const contextType context,
            const tmp<LagrangianVectorDynamicField>& tU
        );
 
        //- Disallow default bitwise copy construction
        cloud(const cloud&) = delete;
 
 
    //- Selectors
 
        //- Select given the type name
        static autoPtr<cloud> New
        (
            const polyMesh& mesh,
            const word& name,
            const contextType context,
            const dictionary& dict,
            const word& type,
            const IOobject::readOption readOption=IOobject::READ_IF_PRESENT,
            const IOobject::writeOption writeOption=IOobject::AUTO_WRITE
        );
 
        //- Select given the type class
        template<class Type>
        static autoPtr<Type> New
        (
            const polyMesh& pMesh,
            const word& name,
            const contextType context,
            const dictionary& dict,
            const IOobject::readOption readOption=IOobject::READ_IF_PRESENT,
            const IOobject::writeOption writeOption=IOobject::AUTO_WRITE
        );
 
 
    //- Destructor
    virtual ~cloud();
 
 
    // Member Functions
 
        // Access
 
            //- Access the mesh
            inline const LagrangianMesh& mesh() const
            {
                return mesh_;
            }
 
            //- Lookup the cloud associated with a mesh
            static const Foam::cloud& lookup(const LagrangianMesh& mesh);
 
            //- Access the models
            Foam::LagrangianModels& LagrangianModels() const;
 
 
        // Fields
 
            //- Add/get a derived field to/from the cache
            template<class Type, class ... Args>
            const CloudDerivedField<Type>& derivedField
            (
                const Args& ... args
            ) const;
 
            //- Add/get an average field to/from the cache
            template<class Type, class ... Args>
            const CloudAverageField<Type>& averageField
            (
                const Args& ... args
            ) const;
 
 
        // Evolution
 
            //- Solve the cloud's evolution over the current time-step
            virtual void solve(const bool initial, const bool final);
 
 
        // Mesh changes
 
            //- Store the positions for use during mapping
            virtual void storePosition();
 
            //- Update for mesh motion
            virtual void movePoints(const polyMesh&);
 
            //- Update topology using the given map
            virtual void topoChange(const polyTopoChangeMap&);
 
            //- Update from another mesh using the given map
            virtual void mapMesh(const polyMeshMap&);
 
            //- Redistribute or update using the given distribution map
            virtual void distribute(const polyDistributionMap&);
 
 
    // Member Operators
 
        //- Disallow default bitwise assignment
        void operator=(const LagrangianMesh&) = delete;
};
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "cloudTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //