patchInjectionBase.H

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    Copyright (C) 2013-2016 OpenFOAM Foundation
    Copyright (C) 2024 OpenCFD Ltd.
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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.
 
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    You should have received a copy of the GNU General Public License
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Class
    Foam::PatchInjectionBase
 
Description
    Base class for patch-based injection models.
 
    Class handles injecting at a random point adjacent to the patch faces to
    provide a more stochastic view of the injection process.  Patch faces are
    triangulated, and area fractions accumulated.  The fractional areas are
    then applied to determine across which face a parcel is to be injected.
 
SourceFiles
    PatchInjectionBase.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_patchInjectionBase_H
#define Foam_patchInjectionBase_H
 
#include "word.H"
#include "labelList.H"
#include "scalarList.H"
#include "vectorList.H"
#include "faceList.H"
#include "labelledTri.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward Declarations
class polyMesh;
class fvMesh;
class Random;
 
/*---------------------------------------------------------------------------*\
                     Class patchInjectionBase Declaration
\*---------------------------------------------------------------------------*/
 
class patchInjectionBase
{
protected:
 
    // Protected Data
 
        //- Patch name
        const word patchName_;
 
        //- Patch ID
        const label patchId_;
 
        //- Patch area - total across all processors
        scalar patchArea_;
 
        //- Patch face normal directions
        vectorList patchNormal_;
 
        //- List of cell labels corresponding to injector positions
        labelList cellOwners_;
 
        //- The polyPatch faces as triangles, the index of each corresponds
        //- to the undecomposed patch face index.
        List<labelledTri> triFace_;
 
        //- Cumulative triangle area per triangle face (processor-local)
        scalarList triCumulativeMagSf_;
 
        //- Cumulative area fractions per processor
        scalarList sumTriMagSf_;
 
 
public:
 
    // Constructors
 
        //- Construct from mesh and patch name
        patchInjectionBase(const polyMesh& mesh, const word& patchName);
 
        //- Copy constructor
        patchInjectionBase(const patchInjectionBase& pib);
 
 
    //- Destructor
    virtual ~patchInjectionBase() = default;
 
 
    // Member Functions
 
        //- Update patch geometry and derived info for injection locations
        virtual void updateMesh(const polyMesh& mesh);
 
        //- Set the injection position and owner cell, tetFace and tetPt
        //  Supply the fraction used to determine the location on the patch
        //  Returns the seed patch face index
        label setPositionAndCell
        (
            const fvMesh& mesh,
            const scalar fraction01,
            Random& rnd,
            vector& position,
            label& cellOwner,
            label& tetFacei,
            label& tetPti
        );
 
        //- Set the injection position and owner cell, tetFace and tetPt
        //  Returns the seed patch face index
        virtual label setPositionAndCell
        (
            const fvMesh& mesh,
            Random& rnd,
            vector& position,
            label& cellOwner,
            label& tetFacei,
            label& tetPti
        );
 
        //- Return the processor that has the location specified by the fraction
        label whichProc(const scalar fraction01) const;
};
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //