Foam2Eigen Class Reference

Class to converts OpenFOAM objects into Eigen and viceversa. More...

#include <Foam2Eigen.H>

Public Member Functions
template<>
Eigen::VectorXd	field2Eigen (const Field< scalar > &field)
template<>
Eigen::VectorXd	field2Eigen (const Field< vector > &field)
template<>
Eigen::VectorXd	field2Eigen (const Field< tensor > &field)
template<>
Eigen::VectorXd	field2Eigen (const DimensionedField< scalar, Foam::volMesh > &field)
template<>
volScalarField	Eigen2field (volScalarField &field_in, Eigen::VectorXd &eigen_vector, bool correctBC)
template<>
Field< scalar >	Eigen2field (Field< scalar > &field, Eigen::MatrixXd &matrix, bool correctBC)
template<>
Field< vector >	Eigen2field (Field< vector > &field, Eigen::MatrixXd &matrix, bool correctBC)
template<>
Field< tensor >	Eigen2field (Field< tensor > &field, Eigen::MatrixXd &matrix, bool correctBC)
template<>
void	fvMatrix2Eigen (fvMatrix< scalar > foam_matrix, Eigen::MatrixXd &A, Eigen::VectorXd &b)
template<>
void	fvMatrix2Eigen (fvMatrix< vector > foam_matrix, Eigen::MatrixXd &A, Eigen::VectorXd &b)
template<>
void	fvMatrix2Eigen (fvMatrix< scalar > foam_matrix, Eigen::SparseMatrix< double > &A, Eigen::VectorXd &b)
template<>
void	fvMatrix2Eigen (fvMatrix< vector > foam_matrix, Eigen::SparseMatrix< double > &A, Eigen::VectorXd &b)
template<>
void	fvMatrix2EigenM (fvMatrix< scalar > &foam_matrix, Eigen::MatrixXd &A)
template<>
void	fvMatrix2EigenM (fvMatrix< scalar > &foam_matrix, Eigen::SparseMatrix< double > &A)
template<>
void	fvMatrix2EigenM (fvMatrix< vector > &foam_matrix, Eigen::MatrixXd &A)
template<>
void	fvMatrix2EigenM (fvMatrix< vector > &foam_matrix, Eigen::SparseMatrix< double > &A)
template<>
void	fvMatrix2EigenV (fvMatrix< scalar > &foam_matrix, Eigen::VectorXd &b)
template<>
void	fvMatrix2EigenV (fvMatrix< vector > &foam_matrix, Eigen::VectorXd &b)
template<>
Eigen::MatrixXd	field2Eigen (const List< vector > &field)
template<>
Eigen::MatrixXd	field2Eigen (const List< scalar > &field)

Static Public Member Functions
template<class type_foam_matrix, class type_A, class type_B>
static void	fvMatrix2Eigen (fvMatrix< type_foam_matrix > foam_matrix, type_A &A, type_B &b)
	Convert a FvMatrix OpenFOAM matrix (Linear System) into a Eigen Matrix A and a source vector b.
template<class type_foam_matrix, class type_A>
static void	fvMatrix2EigenM (fvMatrix< type_foam_matrix > &foam_matrix, type_A &A)
	Convert a ldu OpenFOAM matrix into a Eigen Matrix A.
template<class type_foam_matrix, class type_B>
static void	fvMatrix2EigenV (fvMatrix< type_foam_matrix > &foam_matrix, type_B &b)
	Convert a ldu OpenFOAM matrix into a source vector b.
template<class Type, template< class > class PatchField, class GeoMesh>
static Eigen::MatrixXd	PtrList2Eigen (PtrList< GeometricField< Type, PatchField, GeoMesh > > &fields, label Nfields=-1)
	Convert a PtrList of snapshots to Eigen matrix (only internal field)
template<template< class > class PatchField, class GeoMesh>
static Eigen::VectorXd	field2Eigen (GeometricField< tensor, PatchField, GeoMesh > &field)
	Convert a vector OpenFOAM field into an Eigen Vector.
template<template< class > class PatchField, class GeoMesh>
static Eigen::VectorXd	field2Eigen (GeometricField< vector, PatchField, GeoMesh > &field)
	Convert a vector OpenFOAM field into an Eigen Vector.
template<template< class > class PatchField, class GeoMesh>
static Eigen::VectorXd	field2Eigen (GeometricField< scalar, PatchField, GeoMesh > &field)
	Convert a scalar OpenFOAM field into an Eigen Vector.
template<template< class > class PatchField, class GeoMesh>
static Eigen::Map< Eigen::MatrixXd >	field2EigenMap (GeometricField< scalar, PatchField, GeoMesh > &field)
	Convert a scalar OpenFOAM field into an Eigen Vector.
template<template< class > class PatchField, class GeoMesh>
static Eigen::Map< Eigen::MatrixXd >	field2EigenMapBC (GeometricField< scalar, PatchField, GeoMesh > &field, int BC_index)
	Map a scalar OpenFOAM field boundary into an Eigen Matrix.
template<class Type, class GeoMesh>
static Eigen::VectorXd	field2Eigen (const DimensionedField< Type, GeoMesh > &field)
	Convert an OpenFOAM field into an Eigen Vector.
template<class Type>
static Eigen::VectorXd	field2Eigen (const Field< Type > &field)
	Convert an OpenFOAM field into an Eigen Vector.
template<template< class > class PatchField, class GeoMesh>
static List< Eigen::VectorXd >	field2EigenBC (GeometricField< scalar, PatchField, GeoMesh > &field)
	Convert an OpenFOAM scalar field to a List of Eigen Vectors, one for each boundary.
template<template< class > class PatchField, class GeoMesh>
static List< Eigen::VectorXd >	field2EigenBC (GeometricField< vector, PatchField, GeoMesh > &field)
	Convert an OpenFOAM vector field to a List of Eigen Vectors, one for each boundary.
template<template< class > class PatchField, class GeoMesh>
static List< Eigen::VectorXd >	field2EigenBC (GeometricField< tensor, PatchField, GeoMesh > &field)
	Convert an OpenFOAM tensor field to a List of Eigen Vectors, one for each boundary.
template<template< class > class PatchField, class GeoMesh>
static List< Eigen::MatrixXd >	PtrList2EigenBC (PtrList< GeometricField< scalar, PatchField, GeoMesh > > &fields, label Nfields=-1)
	Convert an OpenFOAM scalar field to a List of Eigen Vectors, one for each boundary.
template<template< class > class PatchField, class GeoMesh>
static List< Eigen::MatrixXd >	PtrList2EigenBC (PtrList< GeometricField< vector, PatchField, GeoMesh > > &fields, label Nfields=-1)
	Convert an OpenFOAM vector field to a List of Eigen Vectors, one for each boundary.
template<template< class > class PatchField, class GeoMesh>
static List< Eigen::MatrixXd >	PtrList2EigenBC (PtrList< GeometricField< tensor, PatchField, GeoMesh > > &fields, label Nfields=-1)
	Convert an OpenFOAM vector field to a List of Eigen Vectors, one for each boundary.
template<template< class > class PatchField, class GeoMesh>
static GeometricField< scalar, PatchField, GeoMesh >	Eigen2field (GeometricField< scalar, PatchField, GeoMesh > &field, Eigen::VectorXd &eigen_vector, bool correctBC=true)
	Convert a vector in Eigen format into an OpenFOAM scalar GeometricField.
template<template< class > class PatchField, class GeoMesh>
static GeometricField< vector, PatchField, GeoMesh >	Eigen2field (GeometricField< vector, PatchField, GeoMesh > &field, Eigen::VectorXd &eigen_vector, bool correctBC=true)
	Convert a vector in Eigen format into an OpenFOAM vector GeometricField.
template<template< class > class PatchField, class GeoMesh>
static GeometricField< scalar, PatchField, GeoMesh >	Eigen2field (GeometricField< scalar, PatchField, GeoMesh > &field, Eigen::VectorXd &eigen_vector, List< Eigen::VectorXd > &eigen_vector_boundary)
	Convert a vector in Eigen format into an OpenFOAM scalar GeometricField.
template<template< class > class PatchField, class GeoMesh>
static GeometricField< vector, PatchField, GeoMesh >	Eigen2field (GeometricField< vector, PatchField, GeoMesh > &field, Eigen::VectorXd &eigen_vector, List< Eigen::VectorXd > &eigen_vector_boundary)
	Convert a vector in Eigen format into an OpenFOAM vector GeometricField.
template<template< class > class PatchField, class GeoMesh>
static GeometricField< tensor, PatchField, GeoMesh >	Eigen2field (GeometricField< tensor, PatchField, GeoMesh > &field, Eigen::VectorXd &eigen_vector, bool correctBC=true)
	Convert a vector in Eigen format into an OpenFOAM tensor GeometricField.
template<class Type>
static Field< Type >	Eigen2field (Field< Type > &field, Eigen::MatrixXd &matrix, bool correctBC=true)
	Converts a matrix in Eigen format into an OpenFOAM Field.
template<class Type, template< class > class PatchField, class GeoMesh>
static std::tuple< Eigen::MatrixXd, Eigen::VectorXd >	projectFvMatrix (fvMatrix< Type > &matrix, PtrList< GeometricField< Type, PatchField, GeoMesh > > &modes, label Nmodes)
	Obtain the Mass Matrix from a list of reduced basis.
template<class Type, template< class > class PatchField, class GeoMesh>
static Eigen::VectorXd	projectField (GeometricField< Type, PatchField, GeoMesh > &field, PtrList< GeometricField< Type, PatchField, GeoMesh > > &modes, label Nmodes)
	Perform the projection of an OpenFOAM field onto a set of modes using the Eigen matrix multiplication.
template<class Type, template< class > class PatchField, class GeoMesh>
static Eigen::MatrixXd	MassMatrix (PtrList< GeometricField< Type, PatchField, GeoMesh > > &modes, label Nmodes)
	Obtain the Mass Matrix from a list of reduced basis.
template<class Type>
static std::tuple< List< Eigen::SparseMatrix< double > >, List< Eigen::VectorXd > >	LFvMatrix2LSM (PtrList< fvMatrix< Type > > &MatrixList)
	Convert a PtrList of OpenFOAM fvMatrix into a tuple of lists of Eigen Sparse Matrices and source vectors.
template<class type_matrix>
static Eigen::Matrix< type_matrix, Eigen::Dynamic, Eigen::Dynamic >	List2EigenMatrix (List< type_matrix > list)
	Convert a Foam List into an Eigen matrix with one column.
template<class type_matrix>
static List< type_matrix >	EigenMatrix2List (Eigen::Matrix< type_matrix, Eigen::Dynamic, Eigen::Dynamic > matrix)
	Convert an Eigen matrix with one column into a Foam List.
template<class type_list>
static Eigen::MatrixXd	field2Eigen (const List< type_list > &list)
	Function to convert an OpenFOAM list to an Eigen Matrix.

Detailed Description

Class to converts OpenFOAM objects into Eigen and viceversa.

Definition at line 58 of file Foam2Eigen.H.

Member Function Documentation

Eigen2field() [1/10]

template<>

Field< scalar > Foam2Eigen::Eigen2field	(	Field< scalar > &	field,
		Eigen::MatrixXd &	matrix,
		bool	correctBC )

Definition at line 553 of file Foam2Eigen.C.

Eigen2field() [2/10]

template<>

Field< tensor > Foam2Eigen::Eigen2field	(	Field< tensor > &	field,
		Eigen::MatrixXd &	matrix,
		bool	correctBC )

Definition at line 614 of file Foam2Eigen.C.

Eigen2field() [3/10]

template<class Type>

static Field< Type > Foam2Eigen::Eigen2field ( Field< Type > & field, Eigen::MatrixXd & matrix, bool correctBC = true )

static

Converts a matrix in Eigen format into an OpenFOAM Field.

Parameters

	[in/out]	field OpenFOAM Field
[in]	matrix	Matrix in Eigen format

Template Parameters

Type	vector or scalar.

Returns

OpenFOAM Field

Eigen2field() [4/10]

template<>

Field< vector > Foam2Eigen::Eigen2field	(	Field< vector > &	field,
		Eigen::MatrixXd &	matrix,
		bool	correctBC )

Definition at line 582 of file Foam2Eigen.C.

Eigen2field() [5/10]

template<template< class > class PatchField, class GeoMesh>

GeometricField< scalar, PatchField, GeoMesh > Foam2Eigen::Eigen2field ( GeometricField< scalar, PatchField, GeoMesh > & field, Eigen::VectorXd & eigen_vector, bool correctBC = true )

static

Convert a vector in Eigen format into an OpenFOAM scalar GeometricField.

Parameters

	[in/out]	field OpenFOAM GeometricField
[in]	eigen_vector	Vector in Eigen format

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

OpenFOAM GeometricField

Examples

09DEIM_ROM.C.

Definition at line 514 of file Foam2Eigen.C.

Eigen2field() [6/10]

template<template< class > class PatchField, class GeoMesh>

GeometricField< scalar, PatchField, GeoMesh > Foam2Eigen::Eigen2field ( GeometricField< scalar, PatchField, GeoMesh > & field, Eigen::VectorXd & eigen_vector, List< Eigen::VectorXd > & eigen_vector_boundary )

static

Convert a vector in Eigen format into an OpenFOAM scalar GeometricField.

Parameters

	[in/out]	field OpenFOAM GeometricField
[in]	eigen_vector	Vector in Eigen format
[in]	eigen_vector_boundary	Vector in Eigen format

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

OpenFOAM GeometricField

Definition at line 460 of file Foam2Eigen.C.

Eigen2field() [7/10]

template<template< class > class PatchField, class GeoMesh>

GeometricField< tensor, PatchField, GeoMesh > Foam2Eigen::Eigen2field ( GeometricField< tensor, PatchField, GeoMesh > & field, Eigen::VectorXd & eigen_vector, bool correctBC = true )

static

Convert a vector in Eigen format into an OpenFOAM tensor GeometricField.

Parameters

	[in/out]	field OpenFOAM GeometricField
[in]	eigen_vector	Vector in Eigen format

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

OpenFOAM GeometricField

Definition at line 403 of file Foam2Eigen.C.

Eigen2field() [8/10]

template<template< class > class PatchField, class GeoMesh>

GeometricField< vector, PatchField, GeoMesh > Foam2Eigen::Eigen2field ( GeometricField< vector, PatchField, GeoMesh > & field, Eigen::VectorXd & eigen_vector, bool correctBC = true )

static

Convert a vector in Eigen format into an OpenFOAM vector GeometricField.

Parameters

	[in/out]	field OpenFOAM GeometricField
[in]	eigen_vector	Vector in Eigen format

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

OpenFOAM GeometricField

Definition at line 488 of file Foam2Eigen.C.

Eigen2field() [9/10]

template<template< class > class PatchField, class GeoMesh>

GeometricField< vector, PatchField, GeoMesh > Foam2Eigen::Eigen2field ( GeometricField< vector, PatchField, GeoMesh > & field, Eigen::VectorXd & eigen_vector, List< Eigen::VectorXd > & eigen_vector_boundary )

static

Convert a vector in Eigen format into an OpenFOAM vector GeometricField.

Parameters

	[in/out]	field OpenFOAM GeometricField
[in]	eigen_vector	Vector in Eigen format
[in]	eigen_vector_boundary	Vector in Eigen format

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

OpenFOAM GeometricField

Definition at line 429 of file Foam2Eigen.C.

Eigen2field() [10/10]

template<>

volScalarField Foam2Eigen::Eigen2field	(	volScalarField &	field_in,
		Eigen::VectorXd &	eigen_vector,
		bool	correctBC )

Definition at line 534 of file Foam2Eigen.C.

EigenMatrix2List()

template<class type_matrix>

template List< double > Foam2Eigen::EigenMatrix2List ( Eigen::Matrix< type_matrix, Eigen::Dynamic, Eigen::Dynamic > matrix )

static

Convert an Eigen matrix with one column into a Foam List.

Parameters

[in]

matrix

The Eigen matrix

Template Parameters

type_matrix

The type of data in the List (int or double)

Returns

The Foam List

Definition at line 1250 of file Foam2Eigen.C.

field2Eigen() [1/12]

template<>

Eigen::VectorXd Foam2Eigen::field2Eigen

(

const DimensionedField< scalar, Foam::volMesh > &

field

)

Definition at line 173 of file Foam2Eigen.C.

field2Eigen() [2/12]

template<class Type, class GeoMesh>

static Eigen::VectorXd Foam2Eigen::field2Eigen ( const DimensionedField< Type, GeoMesh > & field )

static

Convert an OpenFOAM field into an Eigen Vector.

Parameters

[in]

field

The field

Template Parameters

Type	vector or scalar.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen vector

field2Eigen() [3/12]

template<>

Eigen::VectorXd Foam2Eigen::field2Eigen

(

const Field< scalar > &

field

)

Definition at line 125 of file Foam2Eigen.C.

field2Eigen() [4/12]

template<>

Eigen::VectorXd Foam2Eigen::field2Eigen

(

const Field< tensor > &

field

)

Definition at line 156 of file Foam2Eigen.C.

field2Eigen() [5/12]

template<class Type>

static Eigen::VectorXd Foam2Eigen::field2Eigen ( const Field< Type > & field )

static

Convert an OpenFOAM field into an Eigen Vector.

Parameters

[in]

field

The field

Template Parameters

Type	Type of the field can be volScalarField or volVectorField

Returns

Dense Eigen vector

field2Eigen() [6/12]

template<>

Eigen::VectorXd Foam2Eigen::field2Eigen

(

const Field< vector > &

field

)

Definition at line 139 of file Foam2Eigen.C.

field2Eigen() [7/12]

template<>

Eigen::MatrixXd Foam2Eigen::field2Eigen

(

const List< scalar > &

field

)

Definition at line 1295 of file Foam2Eigen.C.

field2Eigen() [8/12]

template<class type_list>

static Eigen::MatrixXd Foam2Eigen::field2Eigen ( const List< type_list > & list )

static

Function to convert an OpenFOAM list to an Eigen Matrix.

Parameters

[in]

list

The OpenFOAM list

Template Parameters

type_list

The type of the list, only scalar and vector are supported

Returns

An Eigen::MatrixXd Matrix containing the OpenFOAM values

field2Eigen() [9/12]

template<>

Eigen::MatrixXd Foam2Eigen::field2Eigen

(

const List< vector > &

field

)

Definition at line 1278 of file Foam2Eigen.C.

field2Eigen() [10/12]

template<template< class > class PatchField, class GeoMesh>

Eigen::VectorXd Foam2Eigen::field2Eigen ( GeometricField< scalar, PatchField, GeoMesh > & field )

static

Convert a scalar OpenFOAM field into an Eigen Vector.

Parameters

[in]

field

The field

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen vector

Definition at line 82 of file Foam2Eigen.C.

field2Eigen() [11/12]

template<template< class > class PatchField, class GeoMesh>

Eigen::VectorXd Foam2Eigen::field2Eigen ( GeometricField< tensor, PatchField, GeoMesh > & field )

static

Convert a vector OpenFOAM field into an Eigen Vector.

Parameters

[in]

field

The field

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen vector

Definition at line 40 of file Foam2Eigen.C.

field2Eigen() [12/12]

template<template< class > class PatchField, class GeoMesh>

Eigen::VectorXd Foam2Eigen::field2Eigen ( GeometricField< vector, PatchField, GeoMesh > & field )

static

Convert a vector OpenFOAM field into an Eigen Vector.

Parameters

[in]

field

The field

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen vector

Definition at line 61 of file Foam2Eigen.C.

field2EigenBC() [1/3]

template<template< class > class PatchField, class GeoMesh>

List< Eigen::VectorXd > Foam2Eigen::field2EigenBC ( GeometricField< scalar, PatchField, GeoMesh > & field )

static

Convert an OpenFOAM scalar field to a List of Eigen Vectors, one for each boundary.

Parameters

[in]

field

The field

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen vector

Definition at line 245 of file Foam2Eigen.C.

field2EigenBC() [2/3]

template<template< class > class PatchField, class GeoMesh>

List< Eigen::VectorXd > Foam2Eigen::field2EigenBC ( GeometricField< tensor, PatchField, GeoMesh > & field )

static

Convert an OpenFOAM tensor field to a List of Eigen Vectors, one for each boundary.

Parameters

[in]

field

The field

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen vector

Definition at line 188 of file Foam2Eigen.C.

field2EigenBC() [3/3]

template<template< class > class PatchField, class GeoMesh>

List< Eigen::VectorXd > Foam2Eigen::field2EigenBC ( GeometricField< vector, PatchField, GeoMesh > & field )

static

Convert an OpenFOAM vector field to a List of Eigen Vectors, one for each boundary.

Parameters

[in]

field

The field

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen vector

Definition at line 216 of file Foam2Eigen.C.

field2EigenMap()

template<template< class > class PatchField, class GeoMesh>

template Eigen::Map< Eigen::MatrixXd > Foam2Eigen::field2EigenMap ( GeometricField< scalar, PatchField, GeoMesh > & field )

static

Convert a scalar OpenFOAM field into an Eigen Vector.

Parameters

[in]

field

The field

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen vector

Definition at line 97 of file Foam2Eigen.C.

field2EigenMapBC()

template<template< class > class PatchField, class GeoMesh>

template Eigen::Map< Eigen::MatrixXd > Foam2Eigen::field2EigenMapBC ( GeometricField< scalar, PatchField, GeoMesh > & field, int BC_index )

static

Map a scalar OpenFOAM field boundary into an Eigen Matrix.

Parameters

[in]	field	The field
[in]	BC_index	The index of the BC you want to Map

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen Map Matrix

Definition at line 105 of file Foam2Eigen.C.

fvMatrix2Eigen() [1/5]

template<>

void Foam2Eigen::fvMatrix2Eigen	(	fvMatrix< scalar >	foam_matrix,
		Eigen::MatrixXd &	A,
		Eigen::VectorXd &	b )

Definition at line 693 of file Foam2Eigen.C.

fvMatrix2Eigen() [2/5]

template<>

void Foam2Eigen::fvMatrix2Eigen	(	fvMatrix< scalar >	foam_matrix,
		Eigen::SparseMatrix< double > &	A,
		Eigen::VectorXd &	b )

Definition at line 778 of file Foam2Eigen.C.

fvMatrix2Eigen() [3/5]

template<class type_foam_matrix, class type_A, class type_B>

static void Foam2Eigen::fvMatrix2Eigen ( fvMatrix< type_foam_matrix > foam_matrix, type_A & A, type_B & b )

static

Convert a FvMatrix OpenFOAM matrix (Linear System) into a Eigen Matrix A and a source vector b.

Parameters

[in]	foam_matrix	The foam matrix can be fvScalarMatrix or fvVectorMatrix
[out]	A	The matrix or the list of matrices, can be dense or sparse
[out]	b	The source term vector or the list of source term vectors, always dense

Template Parameters

type_foam_matrix	The type of foam matrix can be scalar or vector
type_A	The type of matrix or the list of matrices, can be dense (Eigen::MatrixXd) or sparse (Eigen::SparseMatrix<double>) or a List of them
type_B	The type source term vector or the list can be Eigen::VectorXd or List<Eigen::VectorXd>

Examples

09DEIM_ROM.C.

fvMatrix2Eigen() [4/5]

template<>

void Foam2Eigen::fvMatrix2Eigen	(	fvMatrix< vector >	foam_matrix,
		Eigen::MatrixXd &	A,
		Eigen::VectorXd &	b )

Definition at line 730 of file Foam2Eigen.C.

fvMatrix2Eigen() [5/5]

template<>

void Foam2Eigen::fvMatrix2Eigen	(	fvMatrix< vector >	foam_matrix,
		Eigen::SparseMatrix< double > &	A,
		Eigen::VectorXd &	b )

Definition at line 821 of file Foam2Eigen.C.

fvMatrix2EigenM() [1/5]

template<>

void Foam2Eigen::fvMatrix2EigenM	(	fvMatrix< scalar > &	foam_matrix,
		Eigen::MatrixXd &	A )

Definition at line 883 of file Foam2Eigen.C.

fvMatrix2EigenM() [2/5]

template<>

void Foam2Eigen::fvMatrix2EigenM	(	fvMatrix< scalar > &	foam_matrix,
		Eigen::SparseMatrix< double > &	A )

Definition at line 915 of file Foam2Eigen.C.

fvMatrix2EigenM() [3/5]

template<class type_foam_matrix, class type_A>

static void Foam2Eigen::fvMatrix2EigenM ( fvMatrix< type_foam_matrix > & foam_matrix, type_A & A )

static

Convert a ldu OpenFOAM matrix into a Eigen Matrix A.

Parameters

[in]	foam_matrix	The foam matrix can be fvScalarMatrix or fvVectorMatrix
[out]	A	The matrix or the list of matrices, can be dense or sparse

Template Parameters

type_foam_matrix	The type of foam matrix can be fvScalarMatrix or fvVectorMatrix
type_A	The type of matrix or the list of matrices, can be dense (Eigen::MatrixXd) or sparse (Eigen::SparseMatrix<double>) or a List of them

fvMatrix2EigenM() [4/5]

template<>

void Foam2Eigen::fvMatrix2EigenM	(	fvMatrix< vector > &	foam_matrix,
		Eigen::MatrixXd &	A )

Definition at line 955 of file Foam2Eigen.C.

fvMatrix2EigenM() [5/5]

template<>

void Foam2Eigen::fvMatrix2EigenM	(	fvMatrix< vector > &	foam_matrix,
		Eigen::SparseMatrix< double > &	A )

Definition at line 996 of file Foam2Eigen.C.

fvMatrix2EigenV() [1/3]

template<>

void Foam2Eigen::fvMatrix2EigenV	(	fvMatrix< scalar > &	foam_matrix,
		Eigen::VectorXd &	b )

Definition at line 1051 of file Foam2Eigen.C.

fvMatrix2EigenV() [2/3]

template<class type_foam_matrix, class type_B>

static void Foam2Eigen::fvMatrix2EigenV ( fvMatrix< type_foam_matrix > & foam_matrix, type_B & b )

static

Convert a ldu OpenFOAM matrix into a source vector b.

Parameters

[in]	foam_matrix	The foam matrix can be fvScalarMatrix or fvVectorMatrix
[out]	b	The source term vector or the list of source term vectors, always dense

Template Parameters

type_foam_matrix	The type of foam matrix can be fvScalarMatrix or fvVectorMatrix
type_B	The type source term vector or the list can be Eigen::VectorXd or List<Eigen::VectorXd>

fvMatrix2EigenV() [3/3]

template<>

void Foam2Eigen::fvMatrix2EigenV	(	fvMatrix< vector > &	foam_matrix,
		Eigen::VectorXd &	b )

Definition at line 1074 of file Foam2Eigen.C.

LFvMatrix2LSM()

template<class Type>

template std::tuple< List< Eigen::SparseMatrix< double > >, List< Eigen::VectorXd > > Foam2Eigen::LFvMatrix2LSM ( PtrList< fvMatrix< Type > > & MatrixList )

static

Convert a PtrList of OpenFOAM fvMatrix into a tuple of lists of Eigen Sparse Matrices and source vectors.

Parameters

[in]

MatrixList

The matrix list

Template Parameters

Type	{ description }
[in]	Type type of fvMatrix can be either scalar or vectorial

Returns

a tuple containing a list of sparse matrices and a list of source vectors

Definition at line 1203 of file Foam2Eigen.C.

List2EigenMatrix()

template<class type_matrix>

template Eigen::Matrix< double, Eigen::Dynamic, Eigen::Dynamic > Foam2Eigen::List2EigenMatrix ( List< type_matrix > list )

static

Convert a Foam List into an Eigen matrix with one column.

Parameters

[in]

list

The Foam List

Template Parameters

type_matrix

The type of data in the List (int or double)

Returns

The Eigen matrix

Definition at line 1231 of file Foam2Eigen.C.

MassMatrix()

template<class Type, template< class > class PatchField, class GeoMesh>

Eigen::MatrixXd Foam2Eigen::MassMatrix ( PtrList< GeometricField< Type, PatchField, GeoMesh > > & modes, label Nmodes )

static

Obtain the Mass Matrix from a list of reduced basis.

Parameters

	modes	The OpenFOAM modes contained in a PtrList
[in]	Nmodes	The number of requested modes

Template Parameters

Type	vector or scalar.
PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Eigen matrix containing the mass matrix

Definition at line 1168 of file Foam2Eigen.C.

projectField()

template<class Type, template< class > class PatchField, class GeoMesh>

Eigen::VectorXd Foam2Eigen::projectField ( GeometricField< Type, PatchField, GeoMesh > & field, PtrList< GeometricField< Type, PatchField, GeoMesh > > & modes, label Nmodes )

static

Perform the projection of an OpenFOAM field onto a set of modes using the Eigen matrix multiplication.

It is the standard Galerkin projection of a field onto a reduced basis:

\[ \mathbf{f} \in R^{Nx1} , \mathbf{f_r} \in R^{nx1} , \mathbf{M} \in R^{Nxn} \]

        @f[ \mathbf{f_r} = \mathbf{M^T f}

@f]

Parameters

[in]	field	The f OpenFOAM field
[in]	modes	The M OpenFOAM modes contained in a PtrList
[in]	Nmodes	The n number of modes you want to use (The size of input modes can be bigger than the requested number of modes)

Template Parameters

Type	vector or scalar.
PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Eigen vector with the projected field

Definition at line 1101 of file Foam2Eigen.C.

projectFvMatrix()

template<class Type, template< class > class PatchField, class GeoMesh>

std::tuple< Eigen::MatrixXd, Eigen::VectorXd > Foam2Eigen::projectFvMatrix ( fvMatrix< Type > & matrix, PtrList< GeometricField< Type, PatchField, GeoMesh > > & modes, label Nmodes )

static

Obtain the Mass Matrix from a list of reduced basis.

Parameters

	matrix	The matrix
[in]	modes	The OpenFOAM modes contained in a PtrList
[in]	Nmodes	Number of requested modes

Template Parameters

Type	vector or scalar.
PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

An Eigen matrix containing the mass matrix

Definition at line 1125 of file Foam2Eigen.C.

PtrList2Eigen()

template<class Type, template< class > class PatchField, class GeoMesh>

template Eigen::MatrixXd Foam2Eigen::PtrList2Eigen< tensor, fvPatchField, volMesh > ( PtrList< GeometricField< Type, PatchField, GeoMesh > > & fields, label Nfields = -1 )

static

Convert a PtrList of snapshots to Eigen matrix (only internal field)

Parameters

[in]	fields	The fields can be a PtrList<volScalarField> or PtrList<volVectorField>
[in]	Nfields	The nfields

Template Parameters

Type	vector or scalar.
PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

An Eigen matrix containing as columns the snapshots

Examples

08DEIM.C, and 09DEIM_ROM.C.

Definition at line 646 of file Foam2Eigen.C.

PtrList2EigenBC() [1/3]

template<template< class > class PatchField, class GeoMesh>

List< Eigen::MatrixXd > Foam2Eigen::PtrList2EigenBC ( PtrList< GeometricField< scalar, PatchField, GeoMesh > > & fields, label Nfields = -1 )

static

Convert an OpenFOAM scalar field to a List of Eigen Vectors, one for each boundary.

Parameters

[in]	fields	The field
[in]	Nfields	The nfields

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen matrix

Definition at line 270 of file Foam2Eigen.C.

PtrList2EigenBC() [2/3]

template<template< class > class PatchField, class GeoMesh>

List< Eigen::MatrixXd > Foam2Eigen::PtrList2EigenBC ( PtrList< GeometricField< tensor, PatchField, GeoMesh > > & fields, label Nfields = -1 )

static

Convert an OpenFOAM vector field to a List of Eigen Vectors, one for each boundary.

Parameters

[in]	fields	The field
[in]	Nfields	The nfields

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen matrix

Definition at line 360 of file Foam2Eigen.C.

PtrList2EigenBC() [3/3]

template<template< class > class PatchField, class GeoMesh>

List< Eigen::MatrixXd > Foam2Eigen::PtrList2EigenBC ( PtrList< GeometricField< vector, PatchField, GeoMesh > > & fields, label Nfields = -1 )

static

Convert an OpenFOAM vector field to a List of Eigen Vectors, one for each boundary.

Parameters

[in]	fields	The field
[in]	Nfields	The nfields

Template Parameters

PatchField	fvPatchField or fvsPatchField.
GeoMesh	volMesh or surfaceMesh.

Returns

Dense Eigen matrix

Definition at line 316 of file Foam2Eigen.C.

---

The documentation for this class was generated from the following files:

• /github/workspace/src/ITHACA_CORE/Foam2Eigen/Foam2Eigen.H
• /github/workspace/src/ITHACA_CORE/Foam2Eigen/Foam2Eigen.C