volFieldValue.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2016-2019 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.
 
    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::fieldValues::volFieldValue
 
Group
    grpFieldFunctionObjects
 
Description
    Provides a 'volRegion' specialization of the fieldValue function object.
 
    Given a list of user-specified fields and a 'volRegion', a number of
    operations can be performed, such as sums, averages and integrations.
 
Usage
    Example of function object specification:
    \verbatim
    volFieldValue1
    {
        type            volFieldValue;
        libs            ("libfieldFunctionObjects.so");
 
        log             true;
        writeControl    writeTime;
        writeFields     true;
 
        regionType      cellZone;
        name            c0;
        operation       volAverage;
 
        weightField     alpha1;
 
        fields
        (
            p
            U
        );
    }
    \endverbatim
 
    Where the entries comprise:
    \table
        Property     | Description              | Required    | Default value
        type         | Type name: volFieldValue            | yes   |
        log          | Write data to standard output       | no    | no
        writeFields  | Write the region field values       | yes   |
        regionType   | volRegion type: see below           | yes   |
        name         | Name of volRegion if required       | no    |
        operation    | Operation to perform                | yes   |
        weightField  | Name of field to apply weighting    | no    |
        fields       | List of fields to operate on        | yes   |
    \endtable
 
    Where \c regionType is defined by
    \plaintable
        cellZone     | requires a 'name' entry to specify the cellZone
        all          | all cells
    \endplaintable
 
    The \c operation is one of:
    \plaintable
       none                 | No operation
       min                  | Minimum
       max                  | Maximum
       sum                  | Sum
       sumMag               | Sum of component magnitudes
       average              | Ensemble average
       volAverage           | Volume weighted average
       volIntegrate         | Volume integral
       CoV                  | Coefficient of variation: standard deviation/mean
       weightedSum          | Weighted sum
       weightedAverage      | Weighted average
       weightedVolAverage   | Weighted volume average
       weightedVolIntegrate | Weighted volume integral
    \endplaintable
 
See also
    Foam::functionObjects::fieldValues::fieldValue
    Foam::functionObjects::volRegion
    Foam::functionObject
 
SourceFiles
    volFieldValue.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef functionObjects_volFieldValue_H
#define functionObjects_volFieldValue_H
 
#include "fieldValue.H"
#include "volRegion.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
namespace fieldValues
{
 
/*---------------------------------------------------------------------------*\
                        Class volFieldValue Declaration
\*---------------------------------------------------------------------------*/
 
class volFieldValue
:
    public fieldValue,
    public volRegion
{
 
public:
 
    // Public data types
 
        //- Bitmask values for operation variants
        enum operationVariant
        {
            typeBase = 0,         
            typeWeighted = 0x200, 
        };
 
        //- Operation type enumeration
        enum operationType
        {
            // Normal operations
 
            opNone = 0,             
            opMin,                  
            opMax,                  
            opSum,                  
            opSumMag,               
            opAverage,              
            opVolAverage,           
            opVolIntegrate,         
            opCoV,                  
 
            // Weighted variants
 
            opWeightedSum = (opSum | typeWeighted),
 
            opWeightedAverage = (opAverage | typeWeighted),
 
            opWeightedVolAverage = (opVolAverage | typeWeighted),
 
            opWeightedVolIntegrate = (opVolIntegrate | typeWeighted),
        };
 
        //- Operation type names
        static const Enum<operationType> operationTypeNames_;
 
 
protected:
 
    // Protected data
 
        //- Operation to apply to values
        operationType operation_;
 
        //- Weight field name - only used for weighted modes
        word weightFieldName_;
 
 
    // Protected Member Functions
 
        //- True if the operation needs the cell-volume
        bool usesVol() const;
 
        //- True if the operation variant uses a weight-field
        bool usesWeight() const;
 
        //- True if operation variant uses a weight-field that is available.
        //  Checks for availability on any processor.
        inline bool canWeight(const scalarField& weightField) const;
 
        //- Initialise, e.g. cell addressing
        void initialise(const dictionary& dict);
 
        //- Return true if the field name is valid
        template<class Type>
        bool validField(const word& fieldName) const;
 
        //- Insert field values into values list
        template<class Type>
        tmp<Field<Type>> getFieldValues
        (
            const word& fieldName,
            const bool mustGet = false
        ) const;
 
        //- Apply the 'operation' to the values
        template<class Type>
        Type processValues
        (
            const Field<Type>& values,
            const scalarField& V,
            const scalarField& weightField
        ) const;
 
        //- Helper function to output field values
        label writeAll
        (
            const scalarField& V,
            const scalarField& weightField
        );
 
        //- Templated helper function to output field values
        template<class Type>
        bool writeValues
        (
            const word& fieldName,
            const scalarField& V,
            const scalarField& weightField
        );
 
        //- Filter a field according to cellIds
        template<class Type>
        tmp<Field<Type>> filterField(const Field<Type>& field) const;
 
 
        //- Output file header information
        virtual void writeFileHeader(Ostream& os) const;
 
public:
 
    //- Run-time type information
    TypeName("volFieldValue");
 
 
    // Constructors
 
        //- Construct from name, Time and dictionary
        volFieldValue
        (
            const word& name,
            const Time& runTime,
            const dictionary& dict
        );
 
        //- Construct from name, objectRegistry and dictionary
        volFieldValue
        (
            const word& name,
            const objectRegistry& obr,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~volFieldValue() = default;
 
 
    // Public Member Functions
 
        //- Read from dictionary
        virtual bool read(const dictionary& dict);
 
        //- Calculate and write
        virtual bool write();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fieldValues
} // End namespace functionObjects
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "volFieldValueTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //