distributionModel.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2021 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/>.
 
Namespace
    Foam::distributionModels
 
Description
    A namespace for various probability distribution model implementations.
 
Class
    Foam::distributionModel
 
Description
    A library of runtime-selectable doubly-truncated probability distribution
    models. Returns random samples based on given distribution parameters.
 
    Available distribution models include:
    - binned
    - exponential
    - fixedValue
    - general
    - multi-normal
    - normal
    - Rosin-Rammler
    - Mass-based Rosin-Rammler
    - uniform
 
SourceFiles
    distributionModel.C
    distributionModelNew.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef distributionModel_H
#define distributionModel_H
 
#include "IOdictionary.H"
#include "autoPtr.H"
#include "Random.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                     Class distributionModel Declaration
\*---------------------------------------------------------------------------*/
 
class distributionModel
{
protected:
 
    // Protected Data
 
        //- Coefficients dictionary
        const dictionary distributionModelDict_;
 
        //- Reference to the random number generator
        Random& rndGen_;
 
        //- Minimum of the distribution
        scalar minValue_;
 
        //- Maximum of the distribution
        scalar maxValue_;
 
 
    // Protected Member Functions
 
        //- Check that the distribution model is valid
        virtual void check() const;
 
 
public:
 
    //-Runtime type information
    TypeName("distributionModel");
 
 
    //- Declare runtime constructor selection table
    declareRunTimeSelectionTable
    (
        autoPtr,
        distributionModel,
        dictionary,
        (
            const dictionary& dict,
            Random& rndGen
        ),
        (dict, rndGen)
    );
 
 
    // Constructors
 
        //- Construct from dictionary
        distributionModel
        (
            const word& name,
            const dictionary& dict,
            Random& rndGen
        );
 
        //- Copy construct
        distributionModel(const distributionModel& p);
 
        //- Construct and return a clone
        virtual autoPtr<distributionModel> clone() const = 0;
 
 
    //- Selector
    static autoPtr<distributionModel> New
    (
        const dictionary& dict,
        Random& rndGen
    );
 
 
    //- Destructor
    virtual ~distributionModel() = default;
 
 
    // Member Functions
 
        //- Sample the distribution
        virtual scalar sample() const = 0;
 
        //- Return the minimum of the distribution
        virtual scalar minValue() const;
 
        //- Return the maximum of the distribution
        virtual scalar maxValue() const;
 
        //- Return the theoretical mean of the distribution, or
        //- the arithmetic mean of the distribution data
        virtual scalar meanValue() const = 0;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //