This implements a Schur-decomposition based preconditioner for the mortar-elasticity system [A B] [B' ]. More...

Inheritance diagram for Opm::Elasticity::MortarSchurPre< PrecondElasticityBlock >:

Public Member Functions
	MortarSchurPre (const Matrix &P_, const Matrix &B_, PrecondElasticityBlock &Apre_, bool symmetric_=false)
	Constructor.
virtual	~MortarSchurPre ()
	Destructor.
void	pre (Vector &x, Vector &b) override
	Preprocess preconditioner.
void	apply (Vector &v, const Vector &d) override
	Applies the preconditioner.
void	post (Vector &x) override
	Dummy post-process function.
Dune::SolverCategory::Category	category () const override

Protected Attributes
PrecondElasticityBlock &	Apre
	The preconditioner for the elasticity operator.
const Matrix &	B
	The mortar coupling matrix.
int	N
	Number of displacement DOFs.
int	M
	Number of multiplier DOFs.
LUSolver	Lpre
	Linear solver for the multiplier block.
bool	symmetric
	Whether or not to use a symmetric preconditioner.

Detailed Description

template<class PrecondElasticityBlock>
class Opm::Elasticity::MortarSchurPre< PrecondElasticityBlock >

This implements a Schur-decomposition based preconditioner for the mortar-elasticity system [A B] [B' ].

The preconditioner is [Apre B] [ P] Here Apre is some preconditioner for A and P some preconditioner for S = B^TA^-1B !

Constructor & Destructor Documentation

template<class PrecondElasticityBlock>

Opm::Elasticity::MortarSchurPre< PrecondElasticityBlock >::MortarSchurPre	(	const Matrix &	P_,
		const Matrix &	B_,
		PrecondElasticityBlock &	Apre_,
		bool	symmetric_ = false )

inline

Constructor.

Parameters

[in]	P_	The multiplier block with diagonal A approximation
[in]	B_	The mortar coupling matrix
[in]	Apre_	A preconfigured preconditioner for A
[in]	symmetric_	If true, use symmetric preconditioning

template<class PrecondElasticityBlock>

void Opm::Elasticity::MortarSchurPre< PrecondElasticityBlock >::apply	(	Vector &	v,
		const Vector &	d )

inlineoverride

Applies the preconditioner.

Parameters

[out]	v	The resulting vector
[in]	d	The vector to apply the preconditioner to

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