ITHACAcoeffsMass.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/>.
Namespace
    ITHACAutilites
Description
    Utilities to compute projection coefficients and mass matrices
SourceFiles
    ITHACAcoeffsMass.C
\*---------------------------------------------------------------------------*/

 
#ifndef ITHACAcoeffsMass_H
#define ITHACAcoeffsMass_H
 
#include "fvCFD.H"
#include "IOmanip.H"
#include "freestreamFvPatchField.H"
#include <sys/stat.h>
#include <unistd.h>
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wold-style-cast"
#include <Eigen/Eigen>
#pragma GCC diagnostic pop
#include <functional>
#include "./colormod.H"
#include "polyMeshTools.H"
#include <chrono>
#include "mixedFvPatchFields.H"
#include "fvMeshSubset.H"
using namespace std::placeholders;
#include "Foam2Eigen.H"
#include "ITHACAstream.H"
#include "ITHACAfieldsOperations.H"

namespace ITHACAutilities
{
 
//--------------------------------------------------------------------------
template<class Type, template<class> class PatchField, class GeoMesh>
PtrList<GeometricField<Type, PatchField, GeoMesh >> reconstructFromCoeff(
    PtrList<GeometricField<Type, PatchField, GeoMesh >>& modes,
    Eigen::MatrixXd& coeff_matrix, label Nmodes);
 
//-----------------------------------------------------------------------------
template<class Type, template<class> class PatchField, class GeoMesh>
Eigen::MatrixXd getMassMatrix(
    PtrList<GeometricField<Type, PatchField, GeoMesh >>
    &
    fields, label nModes = 0,
    bool consider_volumes = true);
 
//-----------------------------------------------------------------------------
template<class Type, template<class> class PatchField, class GeoMesh >
Eigen::MatrixXd getMassMatrix(
    PtrList<GeometricField<Type, PatchField, GeoMesh >>
    &
    fields,
    PtrList<GeometricField<Type, PatchField, GeoMesh >>&
    fields2, label nModes = 0,
    bool consider_volumes = true);
 
//-----------------------------------------------------------------------------
template<class Type, template<class> class PatchField, class GeoMesh>
Eigen::MatrixXd getMassMatrix(
    PtrList<GeometricField<Type, PatchField, GeoMesh >>
    & fields,
    PtrList<GeometricField<Type, PatchField, GeoMesh >>& fields2,
    Eigen::VectorXd weights,
    label Nmodes = 0,
    bool consider_volumes = true);
 
 
//--------------------------------------------------------------------------
template<class Type, template<class> class PatchField, class GeoMesh>
Eigen::VectorXd getMassMatrixFV(
    GeometricField<Type, PatchField, GeoMesh>& snapshot);
 
//------------------------------------------------------------------------------
template<class Type, template<class> class PatchField, class GeoMesh>
Eigen::VectorXd getCoeffs(GeometricField<Type, PatchField, GeoMesh>&
                          snapshot,
                          PtrList<GeometricField<Type, PatchField, GeoMesh >>& modes, label Nmodes = 0,
                          bool consider_volumes = true);
 
//------------------------------------------------------------------------------
template<class Type, template<class> class PatchField, class GeoMesh >
Eigen::MatrixXd getCoeffs(PtrList<GeometricField<Type, PatchField, GeoMesh >>&
                          snapshot,
                          PtrList<GeometricField<Type, PatchField, GeoMesh >>& modes, label Nmodes = 0,
                          bool consider_volumes = true);
 
//------------------------------------------------------------------------------


template<typename T>
T project_to_POD_basis(T& field, PtrList<T>& modes);
 
//------------------------------------------------------------------------------


template<typename T>
T project_to_POD_basis(T& field, PtrList<T>& modes, const T& meanField);
 
//--------------------------------------------------------------------------
Eigen::MatrixXd parTimeCombMat(List<Eigen::VectorXd>
                               acquiredSnapshotsTimes, Eigen::MatrixXd parameters);
 
}
 
#endif