DILUPreconditioner Class Reference

Simplified diagonal-based incomplete LU preconditioner for asymmetric matrices. The reciprocal of the preconditioned diagonal is calculated and stored. More...

#include <DILUPreconditioner.H>

Inheritance diagram for DILUPreconditioner:

Collaboration diagram for DILUPreconditioner:

Public Member Functions
	TypeName ("DILU")
	Runtime type information.
	DILUPreconditioner (const lduMatrix::solver &, const dictionary &solverControlsUnused)
	Construct from matrix components and preconditioner solver controls.
virtual	~DILUPreconditioner ()=default
	Destructor.
virtual void	precondition (solveScalarField &wA, const solveScalarField &rA, const direction cmpt=0) const
	Return wA the preconditioned form of residual rA.
virtual void	preconditionT (solveScalarField &wT, const solveScalarField &rT, const direction cmpt=0) const
	Return wT the transpose-matrix preconditioned form of residual rT.
Public Member Functions inherited from lduMatrix::preconditioner
virtual const word &	type () const =0
	Runtime type information.
	declareRunTimeSelectionTable (autoPtr, preconditioner, symMatrix,(const solver &sol, const dictionary &solverControls),(sol, solverControls))
	declareRunTimeSelectionTable (autoPtr, preconditioner, asymMatrix,(const solver &sol, const dictionary &solverControls),(sol, solverControls))
	preconditioner (const solver &sol)
	Construct for given solver.
virtual	~preconditioner ()=default
	Destructor.
virtual void	read (const dictionary &)
	Read and reset the preconditioner parameters from the given stream.
virtual void	setFinished (const solverPerformance &perf) const
	Signal end of solver.

Static Public Member Functions
static void	calcReciprocalD (solveScalarField &, const lduMatrix &)
	Calculate the reciprocal of the preconditioned diagonal.
Static Public Member Functions inherited from lduMatrix::preconditioner
static word	getName (const dictionary &)
	Find the preconditioner name (directly or from a sub-dictionary).
static autoPtr< preconditioner >	New (const solver &sol, const dictionary &solverControls)
	Return a new preconditioner.

Additional Inherited Members
Protected Attributes inherited from lduMatrix::preconditioner
const solver &	solver_
	Reference to the base-solver this preconditioner is used with.

Detailed Description

Simplified diagonal-based incomplete LU preconditioner for asymmetric matrices. The reciprocal of the preconditioned diagonal is calculated and stored.

Source files

• DILUPreconditioner.H
• DILUPreconditioner.C

Definition at line 52 of file DILUPreconditioner.H.

Constructor & Destructor Documentation

DILUPreconditioner()

DILUPreconditioner	(	const lduMatrix::solver &	sol,
		const dictionary &	solverControlsUnused )

Construct from matrix components and preconditioner solver controls.

Definition at line 39 of file DILUPreconditioner.C.

References calcReciprocalD(), Foam::diag(), lduMatrix::solver::matrix(), and lduMatrix::preconditioner::preconditioner().

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~DILUPreconditioner()

virtual ~DILUPreconditioner ( )

virtualdefault

Destructor.

Member Function Documentation

TypeName()

TypeName

(

"DILU"

)

Runtime type information.

calcReciprocalD()

void calcReciprocalD ( solveScalarField & rD, const lduMatrix & matrix )

static

Calculate the reciprocal of the preconditioned diagonal.

Definition at line 57 of file DILUPreconditioner.C.

References UList< T >::begin(), lduMatrix::lduAddr(), lduMatrix::lower(), lduAddressing::lowerAddr(), UList< T >::size(), lduMatrix::upper(), and lduAddressing::upperAddr().

Referenced by DILUPreconditioner(), and DILUSmoother::DILUSmoother().

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precondition()

void precondition ( solveScalarField & wA, const solveScalarField & rA, const direction cmpt = 0 ) const

virtual

Return wA the preconditioned form of residual rA.

Implements lduMatrix::preconditioner.

Definition at line 88 of file DILUPreconditioner.C.

References UList< T >::begin(), UList< T >::size(), and lduMatrix::preconditioner::solver_.

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preconditionT()

void preconditionT ( solveScalarField & wT, const solveScalarField & rT, const direction cmpt = 0 ) const

virtual

Return wT the transpose-matrix preconditioned form of residual rT.

Reimplemented from lduMatrix::preconditioner.

Definition at line 132 of file DILUPreconditioner.C.

References UList< T >::begin(), UList< T >::size(), and lduMatrix::preconditioner::solver_.

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

• src/OpenFOAM/matrices/lduMatrix/preconditioners/DILUPreconditioner/DILUPreconditioner.H
• src/OpenFOAM/matrices/lduMatrix/preconditioners/DILUPreconditioner/DILUPreconditioner.C