DILUPreconditioner Class Reference

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

Inheritance diagram for DILUPreconditioner:

Collaboration diagram for DILUPreconditioner:

Public Member Functions
	TypeName ("DILU")
	Runtime type information. More...
	DILUPreconditioner (const lduMatrix::solver &, const dictionary &solverControlsUnused)
	Construct from matrix components and preconditioner solver controls. More...
virtual	~DILUPreconditioner ()
	Destructor. More...
virtual void	precondition (scalarField &wA, const scalarField &rA, const direction cmpt=0) const
	Return wA the preconditioned form of residual rA. More...
virtual void	preconditionT (scalarField &wT, const scalarField &rT, const direction cmpt=0) const
	Return wT the transpose-matrix preconditioned form of residual rT. More...
Public Member Functions inherited from lduMatrix::preconditioner
virtual const word &	type () const =0
	Runtime type information. More...
	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)
virtual	~preconditioner ()
	Destructor. More...
virtual void	read (const dictionary &)
	Read and reset the preconditioner parameters. More...

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

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

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 50 of file DILUPreconditioner.H.

Constructor & Destructor Documentation

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

Construct from matrix components and preconditioner solver controls.

Definition at line 43 of file DILUPreconditioner.C.

References DILUPreconditioner::calcReciprocalD(), and lduMatrix::solver::matrix().

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virtual ~DILUPreconditioner ( )

inlinevirtual

Destructor.

Definition at line 77 of file DILUPreconditioner.H.

References DILUPreconditioner::calcReciprocalD(), DILUPreconditioner::precondition(), and DILUPreconditioner::preconditionT().

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Member Function Documentation

TypeName

(

"DILU"

)

Runtime type information.

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

static

Calculate the reciprocal of the preconditioned diagonal.

Definition at line 58 of file DILUPreconditioner.C.

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

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

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

virtual

Return wA the preconditioned form of residual rA.

Implements lduMatrix::preconditioner.

Definition at line 89 of file DILUPreconditioner.C.

References UList< T >::begin(), DILUPreconditioner::preconditionT(), and List< T >::size().

Referenced by DILUPreconditioner::calcReciprocalD(), and DILUPreconditioner::~DILUPreconditioner().

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

virtual

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

Reimplemented from lduMatrix::preconditioner.

Definition at line 139 of file DILUPreconditioner.C.

References UList< T >::begin(), and List< T >::size().

Referenced by DILUPreconditioner::precondition(), and DILUPreconditioner::~DILUPreconditioner().

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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