constraintProjection.H

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    Copyright (C) 2013-2021 FOSS GP
    Copyright (C) 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
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Class
    Foam::constraintProjection
 
Description
    Update design variables using Rosen's projection method.
 
    Can handle multiple constraints.
    Optionally includes a non-linearity correction
 
SourceFiles
    constraintProjection.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef constraintProjection_H
#define constraintProjection_H
 
#include "constrainedOptimisationMethod.H"
#include "updateMethod.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                     Class constraintProjection Declaration
\*---------------------------------------------------------------------------*/
 
class constraintProjection
:
    public constrainedOptimisationMethod,
    public updateMethod
{
protected:
 
    // Protected data
 
        //- Correct for non-linearities
        bool useCorrection_;
 
        //- Weight of the aggregated constraint values in the merit function
        scalar delta_;
 
 
private:
 
    // Private Member Functions
 
        //- No copy construct
        constraintProjection(const constraintProjection&) = delete;
 
        //- No copy assignment
        void operator=(const constraintProjection&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("constraintProjection");
 
 
    // Constructors
 
        //- Construct from components
        constraintProjection
        (
            const fvMesh& mesh,
            const dictionary& dict,
            autoPtr<designVariables>& designVars,
            const label nConstraints,
            const word& type
        );
 
 
    //- Destructor
    virtual ~constraintProjection() = default;
 
 
    // Member Functions
 
        //- Compute design variables correction
        void computeCorrection();
 
        //- Compute merit function. Could be different than the objective
        //- in the presence of constraints
        virtual scalar computeMeritFunction();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //