ReducedUnsteadyBB.H

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/*---------------------------------------------------------------------------*\
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 * In real Time Highly Advanced Computational Applications for Finite Volumes
 * Copyright (C) 2017 by the ITHACA-FV authors
-------------------------------------------------------------------------------
License
    This file is part of ITHACA-FV
    ITHACA-FV is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    ITHACA-FV 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 Lesser General Public License for more details.
    You should have received a copy of the GNU Lesser General Public License
    along with ITHACA-FV. If not, see <http://www.gnu.org/licenses/>.
Class
    ReducedUnsteadyBB
Description
    A reduced problem for the unsteady Boussinesq equations
SourceFiles
    ReducedUnsteadyBB.C
\*---------------------------------------------------------------------------*/

 
#ifndef ReducedUnsteadyBB_H
#define ReducedUnsteadyBB_H
 
#include "fvCFD.H"
#include "IOmanip.H"
#include "ReducedUnsteadyNS.H"
#include "UnsteadyBB.H"
#include <Eigen/Dense>
#include <unsupported/Eigen/NonLinearOptimization>
#include <unsupported/Eigen/NumericalDiff>

struct newton_unsteadyBB_sup: public newton_argument<double>
{
    public:
        newton_unsteadyBB_sup() {}
 
        newton_unsteadyBB_sup(int Nx, int Ny,
                              UnsteadyBB& problem): newton_argument<double>(Nx, Ny),
            problem(& problem),
            Nphi_u(problem.NUmodes + problem.liftfield.size() + problem.NSUPmodes),
            Nphi_t(problem.NTmodes + problem.liftfieldT.size()),
            N_BC_t(problem.inletIndexT.rows()),
            N_BC(problem.inletIndex.rows()),
            Nphi_prgh(problem.NPrghmodes)
        {}
 
        int operator()(const Eigen::VectorXd& x, Eigen::VectorXd& fvec) const;
        int df(const Eigen::VectorXd& x,  Eigen::MatrixXd& fjac) const;
        UnsteadyBB* problem;
        int Nphi_u;
        int Nphi_t;
        int N_BC_t;
        int N_BC;
        int Nphi_prgh;
        scalar nu;
        scalar Pr;
        scalar dt;
 
        Eigen::VectorXd y_old;
        Eigen::VectorXd BC_t;
        Eigen::VectorXd BC;
 
};
 
struct newton_unsteadyBB_PPE: public newton_argument<double>
{
    public:
        newton_unsteadyBB_PPE() {}
 
        newton_unsteadyBB_PPE(int Nx, int Ny,
                              UnsteadyBB& problem): newton_argument<double>(Nx, Ny),
            problem(& problem),
            Nphi_u(problem.NUmodes + problem.liftfield.size()),
            Nphi_t(problem.NTmodes + problem.liftfieldT.size()),
            N_BC_t(problem.inletIndexT.rows()),
            N_BC(problem.inletIndex.rows()),
            Nphi_p(problem.NPmodes),
            Nphi_prgh(problem.NPrghmodes)
        {}
 
        int operator()(const Eigen::VectorXd& x, Eigen::VectorXd& fvec) const;
        int df(const Eigen::VectorXd& x,  Eigen::MatrixXd& fjac) const;
 
        UnsteadyBB* problem;
        int Nphi_u;
        int Nphi_p;
        int Nphi_t;
        int Nphi_prgh;
        int N_BC_t;
        int N_BC;
        scalar nu;
        scalar Pr;
        scalar dt;
        int writeEvery;
        word BCmethod;
 
        Eigen::VectorXd y_old;
        Eigen::VectorXd BC_t;
        Eigen::VectorXd BC;
};
 
 
 
/*---------------------------------------------------------------------------*\
                        Class reducedProblem Declaration
\*---------------------------------------------------------------------------*/


class ReducedUnsteadyBB: public reducedUnsteadyNS
{
    private:
 
    public:
        // Constructors
        ReducedUnsteadyBB();
        explicit ReducedUnsteadyBB(UnsteadyBB& problem);
        ~ReducedUnsteadyBB() {};

        Eigen::MatrixXd online_solutiont;

        PtrList<volScalarField> LTmodes;

        PtrList<volVectorField> LUmodes;

        newton_unsteadyBB_sup newton_object_sup;

        newton_unsteadyBB_PPE newton_object_PPE;

        PtrList<volScalarField> TREC;
 
        PtrList<volScalarField> PREC;

        int Nphi_t;

        int Nphi_prgh;

        int N_BC_t;

        scalar Pr;

        UnsteadyBB* problem;
 
        // Functions

        Eigen::MatrixXd solveOnline_sup(Eigen::MatrixXd& temp_now_BC,
                                        Eigen::MatrixXd& vel_now_BC, int NParaSet = 0, int startSnap = 0);
 

        Eigen::MatrixXd solveOnline_PPE(Eigen::MatrixXd& temp_now_BC,
                                        Eigen::MatrixXd& vel_now_BC, int NParaSet = 0,
                                        int startSnap = 0);

        void reconstruct_sup(fileName folder = "./ITHACAOutput/online_rec",
                             int printevery = 1);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 
#endif