ReducedSteadyNSTurb.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
    ReducedSteadyNSTurb
Description
    A reduced problem for the stationary turbulent NS equations
SourceFiles
    ReducedSteadyNSTurb.C
\*---------------------------------------------------------------------------*/

 
#ifndef ReducedSteadyNSTurb_H
#define ReducedSteadyNSTurb_H
 
#include "fvCFD.H"
#include "IOmanip.H"
#include "ReducedProblem.H"
#include "ReducedSteadyNS.H"
#include "SteadyNSTurb.H"
#include "ITHACAutilities.H"
#include <Eigen/Dense>
#include <unsupported/Eigen/NonLinearOptimization>
#include <unsupported/Eigen/NumericalDiff>

struct newtonSteadyNSTurbSUP: public newton_argument<double>
{
    public:
        newtonSteadyNSTurbSUP() {}
 
        newtonSteadyNSTurbSUP(int Nx, int Ny,
                              SteadyNSTurb& problem): newton_argument<double>(Nx, Ny),
            problem(& problem),
            Nphi_u(problem.NUmodes + problem.liftfield.size() + problem.NSUPmodes),
            nphiNut(problem.nNutModes),
            Nphi_p(problem.NPmodes),
            N_BC(problem.inletIndex.rows()),
            gNut(problem.nNutModes)
        {}
 
        int operator()(const Eigen::VectorXd& x, Eigen::VectorXd& fvec) const;
        int df(const Eigen::VectorXd& x,  Eigen::MatrixXd& fjac) const;
 
        SteadyNSTurb* problem;
        int Nphi_u;
        int nphiNut;
        int Nphi_p;
        int N_BC;
        Eigen::VectorXd gNut;
        scalar nu;
        Eigen::MatrixXd tauU;
        Eigen::VectorXd bc;
        std::vector<SPLINTER::RBFSpline*> SPLINES;
};
 
struct newtonSteadyNSTurbPPE: public newton_argument<double>
{
    public:
        newtonSteadyNSTurbPPE() {}
 
        newtonSteadyNSTurbPPE(int Nx, int Ny,
                              SteadyNSTurb& problem): newton_argument<double>(Nx, Ny),
            problem(& problem),
            Nphi_u(problem.NUmodes + problem.liftfield.size()),
            nphiNut(problem.nNutModes),
            Nphi_p(problem.NPmodes),
            N_BC(problem.inletIndex.rows()),
            gNut(problem.nNutModes)
        {}
 
        int operator()(const Eigen::VectorXd& x, Eigen::VectorXd& fvec) const;
        int df(const Eigen::VectorXd& x,  Eigen::MatrixXd& fjac) const;
 
        SteadyNSTurb* problem;
        int Nphi_u;
        int nphiNut;
        int Nphi_p;
        int N_BC;
        Eigen::VectorXd gNut;
        scalar nu;
        Eigen::MatrixXd tauU;
        Eigen::VectorXd bc;
        std::vector<SPLINTER::RBFSpline*> SPLINES;
};
 
 
/*---------------------------------------------------------------------------*\
                        Class reducedProblem Declaration
\*---------------------------------------------------------------------------*/
 


class ReducedSteadyNSTurb: public reducedSteadyNS
{
    private:
 
    public:
        // Constructors
        ReducedSteadyNSTurb();
        ReducedSteadyNSTurb(SteadyNSTurb& problem);
 
        ~ReducedSteadyNSTurb() {};
 

        PtrList<volScalarField> nutFields;

        PtrList<volScalarField> nutModes;

        Eigen::MatrixXd rbfCoeffMat;

        Eigen::VectorXd rbfCoeff;

        int nphiNut;

        newtonSteadyNSTurbSUP newtonObjectSUP;

        newtonSteadyNSTurbPPE newtonObjectPPE;

        SteadyNSTurb* problem;

        PtrList<volScalarField> nutRecFields;

        void solveOnlineSUP(Eigen::MatrixXd velNow);

        void solveOnlinePPE(Eigen::MatrixXd velNow);

        void reconstruct(bool exportFields = false,
                         fileName folder = "./ITHACAoutput/online_rec",
                         int printevery = 1);

        Eigen::MatrixXd setOnlineVelocity(Eigen::MatrixXd vel);
 
 
};
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 
 
#endif