volFieldValue.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2016-2021 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 \c 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
    Minimal example by using \c system/controlDict.functions:
    \verbatim
    volFieldValue1
    {
        // Mandatory entries (unmodifiable)
        type            volFieldValue;
        libs            (fieldFunctionObjects);
 
        // Mandatory entries (runtime modifiable)
        fields          (<field1> <field2> ... <fieldN>);
        operation       <operationType>;
        regionType      <volRegion>;
 
        // Optional entries (runtime modifiable)
        postOperation   none;
        weightField     alpha1;
 
        // Optional (inherited) entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property     | Description                        | Type | Req'd | Dflt
      type         | Type name: volFieldValue           | word |  yes  | -
      libs         | Library name: fieldFunctionObjects | word |  yes  | -
      fields       | Names of operand fields            | wordList | yes | -
      regionType   | Face regionType: see below         | word |  yes  | -
      name         | Name for regionType                | word |  yes  | -
      operation    | Operation type: see below          | word |  yes  | -
      postOperation | Post-operation type: see below    | word |  no   | none
      weightField   | Name of field to apply weighting   | word |  maybe |
      weightFields  | Names of fields to apply weighting | wordList | maybe |
    \endtable
 
    The inherited entries are elaborated in:
     - \link fieldValue.H \endlink
     - \link volRegion.H \endlink
 
    Options for the \c regionType entry:
    \plaintable
      cellZone     | requires a 'name' entry to specify the cellZone
      all          | all cells
    \endplaintable
 
    Options for the \c operation entry:
    \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
 
    Options for the \c postOperation entry:
    \plaintable
      none          | No additional operation after calculation
      mag           | Component-wise \c mag() after normal operation
      sqrt          | Component-wise \c sqrt() after normal operation
    \endplaintable
 
    Usage by the \c postProcess utility is not available.
 
See also
    - Foam::functionObject
    - Foam::functionObjects::fieldValues::fieldValue
    - Foam::functionObjects::volRegion
 
SourceFiles
    volFieldValue.C
    volFieldValueTemplates.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,         
            typeScalar = 0x100,   
            typeWeighted = 0x200, 
            typeAbsolute = 0x400, 
        };
 
        //- 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),
 
            // Variants using absolute weighting
        };
 
        //- Operation type names
        static const Enum<operationType> operationTypeNames_;
 
 
        //- Post-operation type enumeration
        enum postOperationType
        {
            postOpNone,   
            postOpMag,    
            postOpSqrt    
        };
 
        //- Operation type names
        static const Enum<postOperationType> postOperationTypeNames_;
 
 
protected:
 
    // Protected Data
 
        //- Operation to apply to values
        operationType operation_;
 
        //- Optional post-evaluation operation
        postOperationType postOperation_;
 
        //- Weight field name(s) - optional
        wordList weightFieldNames_;
 
 
    // Protected Member Functions
 
        //- True if the operation needs the cell-volume
        bool usesVol() const noexcept;
 
        //- True if the operation variant uses mag
        inline bool is_magOp() const noexcept;
 
        //- True if the operation variant uses a weight-field
        inline bool is_weightedOp() const noexcept;
 
        //- True if field is non-empty on any processor.
        inline bool canWeight(const scalarField& fld) const;
 
        //- 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 mandatory = 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:
 
    //- Declare type-name, virtual type (with debug switch)
    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
        );
 
        //- No copy construct
        volFieldValue(const volFieldValue&) = delete;
 
        //- No copy assignment
        void operator=(const volFieldValue&) = delete;
 
 
    //- Destructor
    virtual ~volFieldValue() = default;
 
 
    // 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
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "volFieldValueI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "volFieldValueTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //