limitFields.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2019-2023 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::limitFields
 
Group
    grpFieldFunctionObjects
 
Description
    Limits input fields to user-specified min and max bounds.
 
    Operands:
    \table
      Operand          | Type             | Location
      input            | vol<Type>Field   | <time>/inputField
      output file      | -                | -
      output field     | vol<Type>Field   | <time>/outputField
    \endtable
 
    where \c Type can be one of:
        \c Scalar, \c Vector, \c SphericalTensor, \c SymmTensor, or \c Tensor.
 
Usage
    Minimal example by using \c system/controlDict.functions:
    \verbatim
    limitFieldsFO
    {
        // Mandatory entries
        type            limitFields;
        libs            (fieldFunctionObjects);
        fields          <wordList>;       // (field1 field2 ... fieldN)
        limit           <word>;
 
        // Conditional entries
 
            // when limit = min or both
            min             <scalar>;
 
            // when limit = max or both
            max             <scalar>;
 
        // Inherited entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property     | Description                        | Type | Reqd  | Deflt
      type         | Type name: limitFields             | word |  yes  | -
      libs         | Library name: fieldFunctionObjects | word |  yes  | -
      fields       | List of fields to process          | wordList | yes | -
      limit        | Bound to limit - see below         | word |  yes  | -
      min          | Min limit value                  | scalar | conditional | -
      max          | Max limit value                  | scalar | conditional | -
    \endtable
 
    The inherited entries are elaborated in:
      - \link functionObject.H \endlink
 
    Options for the \c limit entry:
    \verbatim
        min  | specify a minimum value
        max  | specify a maximum value
        both | specify a minimum value and a maximum value
    \endverbatim
 
Note
    For non-scalar types of input field, the user limit is used to create a
    scaling factor using the field magnitudes.
 
SourceFiles
    limitFields.C
    limitFieldsTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_functionObjects_limitFields_H
#define Foam_functionObjects_limitFields_H
 
#include "Enum.H"
#include "fvMeshFunctionObject.H"
#include "volFieldSelection.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
 
/*---------------------------------------------------------------------------*\
                         Class limitFields Declaration
\*---------------------------------------------------------------------------*/
 
class limitFields
:
    public fvMeshFunctionObject
{
public:
 
    // Public Enumerations
 
        enum limitType : unsigned
        {
            CLAMP_NONE = 0,     
            CLAMP_MIN = 0x1,    
            CLAMP_MAX = 0x2,    
            CLAMP_RANGE = (CLAMP_MIN | CLAMP_MAX)  
        };
 
 
protected:
 
    // Protected Data
 
        //- Limit type names
        static const Enum<limitType> limitTypeNames_;
 
        //- Fields to limit
        volFieldSelection fieldSet_;
 
        //- Limiting type
        limitType withBounds_;
 
        //- Minimum limit
        scalar min_;
 
        //- Maximum limit
        scalar max_;
 
 
    // Protected Member Functions
 
        //- Limit a scalar field.
        //  \return true if field of this type was found.
        bool limitScalarField(const word& fieldName);
 
        //- Limit a field.
        //  \return true if field of this type was found.
        template<class Type>
        bool limitField(const word& fieldName);
 
 
public:
 
    //- Runtime type information
    TypeName("limitFields");
 
 
    // Constructors
 
        //- Construct from name, Time and dictionary
        limitFields
        (
            const word& name,
            const Time& runTime,
            const dictionary& dict
        );
 
        //- No copy construct
        limitFields(const limitFields&) = delete;
 
        //- No copy assignment
        void operator=(const limitFields&) = delete;
 
 
    //- Destructor
    virtual ~limitFields() = 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 "limitFieldsTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //