ReducedUnsteadyNST.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
    reducedUnsteadyNST
Description
    A reduced problem for the unsteady NS plus the energy equations
SourceFiles
    reducedUnsteadyNST.C
\*---------------------------------------------------------------------------*/

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

struct newton_unsteadyNST_sup: public newton_argument<double>
{
    public:
        newton_unsteadyNST_sup() {}
 
        newton_unsteadyNST_sup(int Nx, int Ny,
                               unsteadyNST& problem): newton_argument<double>(Nx, Ny),
            problem(& problem),
            Nphi_u(problem.NUmodes + problem.liftfield.size() + problem.NSUPmodes),
            Nphi_p(problem.NPmodes),
            N_BC(problem.inletIndex.rows())
        {}
 
        int operator()(const Eigen::VectorXd& x, Eigen::VectorXd& fvec) const;
        int df(const Eigen::VectorXd& x,  Eigen::MatrixXd& fjac) const;
        unsteadyNST* problem;
        int Nphi_u;
        int Nphi_p;
        int N_BC;
        scalar nu;
        scalar dt;
        Eigen::VectorXd y_old;
        Eigen::VectorXd BC;
 
};
 
struct newton_unsteadyNST_sup_t: public newton_argument<double>
{
    public:
        newton_unsteadyNST_sup_t() {}
 
        newton_unsteadyNST_sup_t(int Nx, int Ny,
                                 unsteadyNST& problem): newton_argument<double>(Nx, Ny),
            problem(& problem),
            Nphi_t(problem.NTmodes + problem.liftfieldT.size()),
            N_BC_t(problem.inletIndexT.rows())
        {}
 
        int operator()(const Eigen::VectorXd& x, Eigen::VectorXd& fvec) const;
        int df(const Eigen::VectorXd& x,  Eigen::MatrixXd& fjac) const;
        unsteadyNST* problem;
        int Nphi_t;
        int N_BC_t;
        int Nphi_u;
        scalar nu;
        scalar DT;
        scalar dt;
        Eigen::VectorXd a_tmp;
        Eigen::VectorXd z_old;
        Eigen::VectorXd BC_t;
 
};
 
/*---------------------------------------------------------------------------*\
                        Class reducedProblem Declaration
\*---------------------------------------------------------------------------*/


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

        Eigen::MatrixXd B_matrix;

        Eigen::MatrixXd Y_matrix;

        Eigen::MatrixXd MT_matrix;

        Eigen::MatrixXd M_matrix;

        Eigen::MatrixXd K_matrix;

        List <Eigen::MatrixXd> S_matrix;

        List <Eigen::MatrixXd> C_matrix;

        List <Eigen::MatrixXd> Q_matrix;

        Eigen::MatrixXd P_matrix;

        Eigen::MatrixXd D_matrix;

        List <Eigen::MatrixXd> G_matrix;

        List < Eigen::MatrixXd> online_solutiont;

        PtrList<volScalarField> Tmodes;

        PtrList<volScalarField> Tsnapshots;

        newton_unsteadyNST_sup newton_object_sup;

        newton_unsteadyNST_sup_t newton_object_sup_t;

        PtrList<volScalarField> T_rec;

        int Nphi_t;

        PtrList<volScalarField> TREC;

        int N_BC_t;

        scalar time;

        scalar dt;

        Eigen::VectorXd z_old;

        Eigen::VectorXd z;

        scalar DT;

        scalar finalTime;

        scalar tstart;

        unsteadyNST* problem;
 
        // Functions

        void solveOnline_sup(Eigen::MatrixXd& vel_now, Eigen::MatrixXd& temp_now,
                             int startSnap = 0);

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

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