extractEulerianParticles.H

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/*---------------------------------------------------------------------------*\
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-------------------------------------------------------------------------------
    Copyright (C) 2015-2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
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
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    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::functionObjects::extractEulerianParticles
 
Group
    grpFieldFunctionObjects
 
Description
    Generates particle size information from Eulerian calculations, e.g. \c VoF.
 
    Operands:
    \table
      Operand           | Type        | Location
      input             | -           | -
      output file       | -           | -
      output field 1    | scalarField | $OUTPUT/d
      output field 2    | scalarField | $OUTPUT/soi
      output field 3    | labelField  | $OUTPUT/tag
      output field 4    | vectorField | $OUTPUT/U
    \endtable
 
    where \c $OUTPUT=<time>/lagrangian/eulerianParticleCloud
 
Usage
    Minimal example by using \c system/controlDict.functions:
    \verbatim
    extractEulerianParticlesFO
    {
        // Mandatory entries
        type            extractEulerianParticles;
        libs            (fieldFunctionObjects);
        faceZone        <word>;  // f0;
        alpha           <word>;  // alpha.water;
 
        // Optional entries
        alphaThreshold  <scalar>;
        nLocations      <label>;
        U               <word>;
        rho             <word>;
        phi             <word>;
        minDiameter     <scalar>;
        maxDiameter     <scalar>;
 
        // Inherited entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property   | Description                          | Type | Reqd  | Deflt
      type       | Type name: extractEulerianParticles  | word |  yes  | -
      libs       | Library name: fieldFunctionObjects   | word |  yes  | -
      faceZone   | Name of faceZone used as collection surface | word  | yes | -
      alpha      | Name of phase indicator field        | word |  yes  | -
      alphaThreshold | Threshold for alpha field        | scalar | no  | 0.1
      nLocations | Number of injection bins to generate | label  | no  | 0
      U          | Name of velocity field               | word   | no  | U
      rho        | Name of density field                | word   | no  | rho
      phi        | Name of flux field                   | word   | no  | phi
      minDiameter | Minimum diameter                    | scalar | no  | SMALL
      maxDiameter | Maximum diameter                    | scalar | no  | GREAT
    \endtable
 
    The inherited entries are elaborated in:
      - \link functionObject.H \endlink
      - \link writeFile.H \endlink
 
SourceFiles
    extractEulerianParticles.C
    extractEulerianParticlesTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_functionObjects_extractEulerianParticles_H
#define Foam_functionObjects_extractEulerianParticles_H
 
#include "fvMeshFunctionObject.H"
#include "writeFile.H"
#include "runTimeSelectionTables.H"
#include "polyMesh.H"
#include "surfaceFieldsFwd.H"
#include "globalIndex.H"
#include "eulerianParticle.H"
#include "injectedParticleCloud.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
/*---------------------------------------------------------------------------*\
           Class extractEulerianParticlesFunctionObject Declaration
\*---------------------------------------------------------------------------*/
 
class extractEulerianParticles
:
    public fvMeshFunctionObject,
    public writeFile
{
protected:
 
    // Protected Data
 
        //- Storage for collected particles
        injectedParticleCloud cloud_;
 
 
        // Face-zone data
 
            //- Name of faceZone to sample
            word faceZoneName_;
 
            //- Index of the faceZone
            label zoneID_;
 
            //- Patch indices where faceZone face intersect patch
            labelList patchIDs_;
 
            //- Patch face indices where faceZone face intersect patch
            labelList patchFaceIDs_;
 
 
        // Field names
 
            //- Name of phase fraction field
            word alphaName_;
 
            //- Value of phase fraction used to identify particle boundaries
            scalar alphaThreshold_;
 
            //- Name of the velocity field, default = U
            word UName_;
 
            //- Name of the density field, default = rho
            word rhoName_;
 
            //- Name of the flux field, default ="rho"
            word phiName_;
 
 
        // Agglomeration
 
            //- Number of sample locations to generate
            label nInjectorLocations_;
 
            //- Agglomeration addressing from fine to coarse (local proc only)
            labelList fineToCoarseAddr_;
 
            //- Global coarse face addressing
            globalIndex globalCoarseFaces_;
 
 
        // Particle collection info
 
            //- Region indices in faceZone faces from last iteration
            labelList regions0_;
 
            //- Particle properties (partial, being accumulated)
            List<eulerianParticle> particles_;
 
            //- Map from region to index in particles_ list
            Map<label> regionToParticleMap_;
 
            //- Minimum diameter (optional)
            //  Can be used to filter out 'small' particles
            scalar minDiameter_;
 
            //- Maximum diameter (optional)
            //  Can be used to filter out 'large' particles
            scalar maxDiameter_;
 
 
        // Statistics
 
            //- Total number of collected particles
            label nCollectedParticles_;
 
            //- Total collected volume [m3]
            scalar collectedVolume_;
 
            //- Total number of discarded particles
            label nDiscardedParticles_;
 
            //- Total discarded volume [m3]
            scalar discardedVolume_;
 
 
    // Protected Member Functions
 
        //- Check that the faceZone is valid
        virtual void checkFaceZone();
 
        //- Initialise the particle collection bins
        virtual void initialiseBins();
 
        //- Return the volumetric flux
        virtual tmp<surfaceScalarField> phiU() const;
 
        //- Set the blocked faces, i.e. where alpha > alpha threshold value
        virtual void setBlockedFaces
        (
            const surfaceScalarField& alphaf,
            const faceZone& fz,
            boolList& blockedFaces
        );
 
        //- Calculate the addressing between regions between iterations
        //- Returns the number of active regions (particles)
        virtual void calculateAddressing
        (
            const label nRegionsNew,
            const scalar time,
            labelList& regionFaceIDs
        );
 
        //- Collect particles that have passed through the faceZone
        virtual void collectParticle
        (
            const scalar time,
            const label regioni
        );
 
        //- Process latest region information
        virtual void accumulateParticleInfo
        (
            const surfaceScalarField& alphaf,
            const surfaceScalarField& phi,
            const labelList& regionFaceIDs,
            const faceZone& fz
        );
 
        template<class Type>
        inline Type faceValue
        (
            const GeometricField<Type, fvsPatchField, surfaceMesh>& field,
            const label localFaceI,
            const label globalFaceI
        ) const;
 
 
public:
 
    //- Runtime type information
    TypeName("extractEulerianParticles");
 
 
    // Constructors
 
        //- Construct from components
        extractEulerianParticles
        (
            const word& name,
            const Time& runTime,
            const dictionary& dict
        );
 
        //- No copy construct
        extractEulerianParticles(const extractEulerianParticles&) = delete;
 
        //- No copy assignment
        void operator=(const extractEulerianParticles&) = delete;
 
 
    //- Destructor
    virtual ~extractEulerianParticles() = default;
 
 
    // Member Functions
 
        //- Read the function-object dictionary
        virtual bool read(const dictionary& dict);
 
        //- Execute the function-object operations
        virtual bool execute();
 
        //- Write the function-object results
        virtual bool write();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace functionObjects
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "extractEulerianParticlesTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //