volFieldValue.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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    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
 
Description
    Provides a 'fvCellSet' specialisation of the fieldValue function object.
 
    Given a list of user-specified fields and a 'fvCellSet', a number of
    operations can be performed, such as sums, averages and integrations.
 
    Example of function object specification:
    \verbatim
    volFieldValue1
    {
        type            volFieldValue;
        libs            ("libfieldFunctionObjects.so");
 
        log             true;
        writeControl    writeTime;
        writeFields     true;
 
        select          cellZone;
        cellZone        c0;
        operation       volAverage;
 
        weightField     alpha1;
 
        fields
        (
            p
            U
        );
    }
    \endverbatim
 
Usage
    \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   |
        writeLocation| Write the location (if available)   | no    | no
        select       | fvCellSet type: see below           | yes   |
        name         | Name of fvCellSet if required       | no    |
        operation    | Operation to perform                | yes   |
        weightField  | Name of field to apply weighting    | no    |
        weightFields | Names of fields to apply weighting  | no    |
        fields       | List of fields to operate on        | yes   |
    \endtable
 
    Where \c select options are:
    \plaintable
        cellZone     | requires a 'name' entry to specify the cellZone
        all          | all cells
    \endplaintable
 
    The \c operation is one of:
    \plaintable
       none                 | No operation
       sum                  | Sum
       sumMag               | Sum of component magnitudes
       average              | Ensemble average
       volAverage           | Volume weighted average
       volIntegrate         | Volume integral
       min                  | Minimum
       max                  | Maximum
       minMag               | Minimum magnitude
       maxMag               | Maximum magnitude
       CoV                  | Coefficient of variation: standard deviation/mean
    \endplaintable
 
See also
    Foam::functionObjects::fieldValues::fieldValue
    Foam::Foam::fvCellSet
    Foam::functionObject
 
SourceFiles
    volFieldValue.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef functionObjects_volFieldValue_H
#define functionObjects_volFieldValue_H
 
#include "fieldValue.H"
#include "fvCellSet.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
namespace fieldValues
{
 
/*---------------------------------------------------------------------------*\
                        Class volFieldValue Declaration
\*---------------------------------------------------------------------------*/
 
class volFieldValue
:
    public fieldValue,
    public fvCellSet
{
 
public:
 
    // Public data types
 
        //- Operation type enumeration
        enum class operationType
        {
            none,
            sum,
            sumMag,
            average,
            volAverage,
            volIntegrate,
            min,
            max,
            minMag,
            maxMag,
            CoV
        };
 
        //- Operation type names
        static const NamedEnum<operationType, 11> operationTypeNames_;
 
 
    // Public classes
 
        //- Forward declare the result structure
        template<class Type>
        struct Result;
 
 
protected:
 
    // Protected data
 
        //- Write the location if available for this operation - optional
        Switch writeLocation_;
 
        //- Operation to apply to values
        operationType operation_;
 
        //- Weight field names
        wordList weightFieldNames_;
 
        //- Scale factor - optional
        scalar scaleFactor_;
 
 
    // Protected Member Functions
 
        //- 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;
 
        //- Apply a comparison operation to the values, returning the limiting
        //  value, its index and processor index
        template<class Op>
        void compareScalars
        (
            const scalarField& values,
            const scalar emptyVal,
            Result<scalar>& result,
            const Op& op
        ) const;
 
        //- Apply the operation to the values, and return true if successful.
        //  Does nothing unless overloaded below.
        template<class Type, class ResultType>
        bool processValues
        (
            const Field<Type>& values,
            const scalarField& weights,
            const scalarField& V,
            Result<ResultType>& result
        ) const;
 
        //- Apply Type -> Type operation to the values. Calls
        //  processValuesTypeType.
        template<class Type>
        bool processValues
        (
            const Field<Type>& values,
            const scalarField& weights,
            const scalarField& V,
            Result<Type>& result
        ) const;
 
        //- Apply Type -> scalar operation to the values
        template<class Type>
        bool processValues
        (
            const Field<Type>& values,
            const scalarField& weights,
            const scalarField& V,
            Result<scalar>& result
        ) const;
 
        //- Apply scalar -> scalar operation to the values. Calls
        //  processValuesTypeType.
        bool processValues
        (
            const Field<scalar>& values,
            const scalarField& weights,
            const scalarField& V,
            Result<scalar>& result
        ) const;
 
        //- Apply a Type -> Type operation to the values
        template<class Type>
        bool processValuesTypeType
        (
            const Field<Type>& values,
            const scalarField& weights,
            const scalarField& V,
            Result<Type>& result
        ) const;
 
        //- Output file header location information for a given type
        template<class Type>
        void writeFileHeaderLocation();
 
        //- Output file header information
        virtual void writeFileHeader(const label i);
 
 
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();
 
 
    // Public Member Functions
 
        //- Templated helper function to output field values
        template<class Type>
        bool writeValues
        (
            const word& fieldName,
            const scalarField& weights,
            const scalarField& V
        );
 
        //- Templated helper function to output field values
        template<class Type, class ResultType>
        bool writeValues
        (
            const word& fieldName,
            const Field<Type>& values,
            const scalarField& weights,
            const scalarField& V
        );
 
        //- Filter a field according to cellIds
        template<class Type>
        tmp<Field<Type>> filterField(const Field<Type>& field) const;
 
        //- Read from dictionary
        virtual bool read(const dictionary&);
 
        //- Calculate and write
        virtual bool write();
};
 
 
template<>
void volFieldValue::writeFileHeaderLocation<scalar>();
 
 
/*---------------------------------------------------------------------------*\
                      Class volFieldValue::Result Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type>
struct volFieldValue::Result
{
    Type value;
    label celli;
    label proci;
    point cc;
};
 
 
template<class Type>
inline Istream& operator>>
(
    Istream& is,
    volFieldValue::Result<Type>& result
)
{
    return is >> result.value >> result.celli >> result.proci >> result.cc;
}
 
 
template<class Type>
inline Ostream& operator<<
(
    Ostream& os,
    const volFieldValue::Result<Type>& result
)
{
    return os << result.value << result.celli << result.proci << result.cc;
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fieldValues
} // End namespace functionObjects
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "volFieldValueTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //