ryujin::NavierStokes::DiagonalMatrix< dim, Number > Class Template Reference

#include <include/ryujin/navier_stokes/parabolic_module_gmg_operators.h>

Public Types
using	vector_type = dealii::LinearAlgebra::distributed::Vector< Number >
using	block_vector_type = dealii::LinearAlgebra::distributed::BlockVector< Number >

Public Member Functions
	DiagonalMatrix ()=default
template<typename Vector >
void	reinit (const Vector &lumped_mass_matrix, const vector_type &density, const dealii::AffineConstraints< Number > &affine_constraints)
vector_type &	get_vector ()
block_vector_type &	get_block_vector ()
void	vmult (vector_type &dst, const vector_type &src) const
void	vmult (block_vector_type &dst, const block_vector_type &src) const

Detailed Description

template<int dim, typename Number>
class ryujin::NavierStokes::DiagonalMatrix< dim, Number >

A diagonal matrix used as a preconditioner for the non-multigrid CG iteration. The diagonal matrix is constructed by computing \(d_i=1/(\rho_i m_i)\) for a given lumped mass matrix \( m_i \), and a density field \( \rho_i \).

Definition at line 43 of file parabolic_module_gmg_operators.h.

Member Typedef Documentation

vector_type

template<int dim, typename Number >

using ryujin::NavierStokes::DiagonalMatrix< dim, Number >::vector_type = dealii::LinearAlgebra::distributed::Vector<Number>

A distributed vector of scalar values.

Definition at line 49 of file parabolic_module_gmg_operators.h.

block_vector_type

template<int dim, typename Number >

using ryujin::NavierStokes::DiagonalMatrix< dim, Number >::block_vector_type = dealii::LinearAlgebra::distributed::BlockVector<Number>

A distributed block vector of scalar values.

Definition at line 54 of file parabolic_module_gmg_operators.h.

Constructor & Destructor Documentation

DiagonalMatrix()

template<int dim, typename Number >

ryujin::NavierStokes::DiagonalMatrix< dim, Number >::DiagonalMatrix ( )

default

Constructor

Member Function Documentation

reinit()

template<int dim, typename Number >

template<typename Vector >

void ryujin::NavierStokes::DiagonalMatrix< dim, Number >::reinit ( const Vector &  lumped_mass_matrix, const vector_type &  density, const dealii::AffineConstraints< Number > &  affine_constraints  )

inline

Compute the inverse of a given density \( \rho_i \) and a given lumped mass matrix \( m_i \), viz., \(d_i=1/(\rho_i m_i)\).

Definition at line 67 of file parabolic_module_gmg_operators.h.

get_vector()

template<int dim, typename Number >

vector_type & ryujin::NavierStokes::DiagonalMatrix< dim, Number >::get_vector ( )

inline

Get access to the internal vector to be externally filled.

Definition at line 101 of file parabolic_module_gmg_operators.h.

get_block_vector()

template<int dim, typename Number >

block_vector_type & ryujin::NavierStokes::DiagonalMatrix< dim, Number >::get_block_vector ( )

inline

Get access to the internal vector to be externally filled.

Definition at line 109 of file parabolic_module_gmg_operators.h.

vmult() [1/2]

template<int dim, typename Number >

void ryujin::NavierStokes::DiagonalMatrix< dim, Number >::vmult ( vector_type &  dst, const vector_type &  src  ) const

inline

Apply on a vector.

Definition at line 117 of file parabolic_module_gmg_operators.h.

vmult() [2/2]

template<int dim, typename Number >

void ryujin::NavierStokes::DiagonalMatrix< dim, Number >::vmult ( block_vector_type &  dst, const block_vector_type &  src  ) const

inline

Apply on a block vector.

Definition at line 131 of file parabolic_module_gmg_operators.h.

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

• include/ryujin/navier_stokes/parabolic_module.h
• include/ryujin/navier_stokes/parabolic_module_gmg_operators.h