adjointSimple.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
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Class
    Foam::adjointSimple
 
Description
    Solution of the adjoint PDEs for incompressible, steady-state flows
 
    Reference:
    \verbatim
        For the development of the adjoint PDEs
 
            Papoutsis-Kiachagias, E. M., & Giannakoglou, K. C. (2014).
            Continuous Adjoint Methods for Turbulent Flows, Applied to Shape
            and Topology Optimization: Industrial Applications.
            Archives of Computational Methods in Engineering, 23(2), 255-299.
            http://doi.org/10.1007/s11831-014-9141-9
    \endverbatim
 
\*---------------------------------------------------------------------------*/
 
#ifndef adjointSimple_H
#define adjointSimple_H
 
#include "incompressibleAdjointSolver.H"
#include "SIMPLEControl.H"
#include "incompressibleVars.H"
#include "incompressibleAdjointVars.H"
#include "adjointSensitivityIncompressible.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                        Class adjointSimple Declaration
\*---------------------------------------------------------------------------*/
 
class adjointSimple
:
    public incompressibleAdjointSolver
{
 
private:
 
    // Private Member Functions
 
        //- No copy construct
        adjointSimple(const adjointSimple&) = delete;
 
        //- No copy assignment
        void operator=(const adjointSimple&) = delete;
 
 
protected:
 
    // Protected data
 
        //- Solver control
        autoPtr<SIMPLEControl> solverControl_;
 
        //- Reference to incompressibleAdjointVars
        //  Used for convenience and to avoid repetitive dynamic_casts
        //  Same as getAdjointVars()
        incompressibleAdjointVars& adjointVars_;
 
        //- Cumulative continuity error
        scalar cumulativeContErr_;
 
        //- Sensitivity Derivatives engine
        autoPtr<incompressible::adjointSensitivity> adjointSensitivity_;
 
 
    // Protected Member Functions
 
        //- Allocate incompressibleAdjointVars and return reference to be used
        //- for convenience in the rest of the class.
        incompressibleAdjointVars& allocateVars();
 
        //- In case variable names are different than the base ones,
        //- add extra schemes and relaxation factors to the appropriate dicts
        //  Note: 160813: Changes in the baseline solution and fvSchemes classes
        //  have to be made in order to add schemes in the dict at run time.
        //  Not supported for now
        void addExtraSchemes();
 
        //- Compute continuity errors
        void continuityErrors();
 
 
public:
 
    // Static Data Members
 
        //- Run-time type information
        TypeName("adjointSimple");
 
 
    // Constructors
 
        //- Construct from mesh and dictionary
        adjointSimple
        (
            fvMesh& mesh,
            const word& managerType,
            const dictionary& dict,
            const word& primalSolverName
        );
 
 
    //- Destructor
    virtual ~adjointSimple() = default;
 
 
    // Member Functions
 
        //- Read dict if updated
        virtual bool readDict(const dictionary& dict);
 
 
        // Evolution
 
            //- Execute one iteration of the solution algorithm
            virtual void solveIter();
 
            //- Steps to be executed before each main SIMPLE iteration
            virtual void preIter();
 
            //- The main SIMPLE iter
            virtual void mainIter();
 
            //- Steps to be executed before each main SIMPLE iteration
            virtual void postIter();
 
            //- Main control loop
            virtual void solve();
 
            //- Looper (advances iters, time step)
            virtual bool loop();
 
            //- Functions to be called before loop
            virtual void preLoop();
 
            //- Compute sensitivities of the underlaying objectives
            virtual void computeObjectiveSensitivities();
 
            //- Grab a reference to the computed sensitivities
            virtual const scalarField& getObjectiveSensitivities();
 
            //- Clears the sensitivity field known by the adjoint solver
            //- and zeros sensitivities constituents
            virtual void clearSensitivities();
 
            //- Return the base sensitivity object
            virtual sensitivity& getSensitivityBase();
 
 
            // Source terms to be added to the adjoint equations
 
                //- Source terms for the momentum equations
                virtual void addMomentumSource(fvVectorMatrix& matrix);
 
                //- Source terms for the continuity equation
                virtual void addPressureSource(fvScalarMatrix& matrix);
 
            //- Update primal based quantities
            //- related to the objective functions.
            //  Also writes the objective function values to files.
            //  Written here and not in the postLoop function of the primal
            //  to make sure we don't pollute the objective files with
            //  objectives of non-converged linearSearch iterations
            virtual void updatePrimalBasedQuantities();
 
            //- Write average iteration
            virtual bool writeData(Ostream& os) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //