conjugateGradient.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
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Class
    Foam::conjugateGradient
 
Description
    The Conjugate Gradient formula.
 
    Beta computed from Fletcher-Reeves or Polak-Ribiere approaches.
    Polak-Ribiere seems to misbehave.
    Not tested with line search.
 
SourceFiles
    conjugateGradient.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef conjugateGradient_H
#define conjugateGradient_H
 
#include "updateMethod.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                      Class conjugateGradient Declaration
\*---------------------------------------------------------------------------*/
 
class conjugateGradient
:
    public updateMethod
{
protected:
 
    // Protected data
 
        scalarField dxOld_;
        scalarField sOld_;
        word betaType_;
 
 
private:
 
    // Private Member Functions
 
        //- No copy construct
        conjugateGradient(const conjugateGradient&) = delete;
 
        //- No copy assignment
        void operator=(const conjugateGradient&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("conjugateGradient");
 
 
    // Constructors
 
        //- Construct from components
        conjugateGradient
        (
            const fvMesh& mesh,
            const dictionary& dict,
            autoPtr<designVariables>& designVars,
            const label nConstraints,
            const word& type
        );
 
 
    //- Destructor
    virtual ~conjugateGradient() = default;
 
 
    // Member Functions
 
        //- Compute design variables correction
        void computeCorrection();
 
        //- Update old correction. For use when eta has been changed externally
        virtual void updateOldCorrection(const scalarField& oldCorrection);
 
        //- Write useful quantities to files
        virtual bool writeData(Ostream& os) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //