ReducedUnsteadyNSTTurb.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
    reducedProblem
 
Description
    A reduced problem for the unsteady NS plus the energy equations for turbulence modelling
 
SourceFiles
    reducedUnsteadyNSTTurb.C
 
\*---------------------------------------------------------------------------*/

 
#ifndef ReducedUnsteadyNSTTurb_H
#define ReducedUnsteadyNSTTurb_H
 
#include "fvCFD.H"
#include "IOmanip.H"
#include "ReducedSteadyNS.H"
#include "ReducedUnsteadyNST.H"
#include "UnsteadyNSTTurb.H"
#include <Eigen/Dense>
#include <unsupported/Eigen/NonLinearOptimization>
#include <unsupported/Eigen/NumericalDiff>
 
struct newton_unsteadyNSTTurb_sup: public newton_argument<double>
{
    public:
        newton_unsteadyNSTTurb_sup() {}
 
        newton_unsteadyNSTTurb_sup(int Nx, int Ny,
                                   UnsteadyNSTTurb& problem): newton_argument<double>(Nx, Ny),
            problem(& problem),
            Nphi_u(problem.NUmodes + problem.liftfield.size() + problem.NSUPmodes),
            Nphi_nut(problem.Nnutmodes),
            Nphi_p(problem.NPmodes),
            N_BC(problem.inletIndex.rows()),
            nu_c(problem.Nnutmodes)
        {}
 
        int operator()(const Eigen::VectorXd& x, Eigen::VectorXd& fvec) const;
        int df(const Eigen::VectorXd& x,  Eigen::MatrixXd& fjac) const;
        UnsteadyNSTTurb* problem;
        int Nphi_u;
        int Nphi_nut;
        int Nphi_p;
        int N_BC;
        Eigen::VectorXd nu_c;
        int count_online_solve = 0;
        Eigen::VectorXd mu_now;
        scalar nu;
        scalar dt;
        Eigen::VectorXd y_old;
        Eigen::VectorXd BC;
        std::vector<SPLINTER::RBFSpline*> SPLINES;
};
 
struct newton_unsteadyNSTTurb_sup_t: public newton_argument<double>
{
    public:
        newton_unsteadyNSTTurb_sup_t() {}
 
        newton_unsteadyNSTTurb_sup_t(int Nx, int Ny,
                                     UnsteadyNSTTurb& problem): newton_argument<double>(Nx, Ny),
            problem(& problem),
            Nphi_t(problem.NTmodes + problem.liftfieldT.size()),
            N_BC_t(problem.inletIndexT.rows()),
            nu_c(problem.Nnutmodes)
        {}
 
        int operator()(const Eigen::VectorXd& x, Eigen::VectorXd& fvec) const;
        int df(const Eigen::VectorXd& x,  Eigen::MatrixXd& fjac) const;
        UnsteadyNSTTurb* problem;
        int Nphi_t;
        int N_BC_t;
        int Nphi_u;
        int Nphi_nut;
        Eigen::VectorXd nu_c;
        scalar nu;
        scalar DT;
        scalar Prt;
        scalar Pr;
        scalar dt;
        Eigen::VectorXd a_tmp;
        Eigen::MatrixXd Y_matrix;
        Eigen::MatrixXd MT_matrix;
        Eigen::VectorXd mu_now;
        Eigen::VectorXd z;
        Eigen::VectorXd z_old;
        Eigen::VectorXd BC_t;
        std::vector<SPLINTER::RBFSpline*> SPLINES;
};
 
/*---------------------------------------------------------------------------*\
                        Class reducedProblem Declaration
\*---------------------------------------------------------------------------*/


class ReducedUnsteadyNSTTurb: public reducedUnsteadyNST
{
    private:
 
    public:
        // Constructors
        //
        ReducedUnsteadyNSTTurb();

        explicit ReducedUnsteadyNSTTurb(UnsteadyNSTTurb& problem);
 
        ~ReducedUnsteadyNSTTurb() {};

        PtrList<volScalarField> nutFields;

        PtrList<volScalarField> nuTmodes;

        PtrList<volScalarField> nutREC;

        newton_unsteadyNSTTurb_sup newton_object_sup;

        newton_unsteadyNSTTurb_sup_t newton_object_sup_t;

        scalar Prt;

        scalar Pr;

        double time;

        double dt;

        double finalTime;

        double tstart;

        UnsteadyNSTTurb* problem;

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

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

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