FreeFOAM The Cross-Platform CFD Toolkit
Hosted by SourceForge:
Get FreeFOAM at SourceForge.net. Fast, secure and Free Open Source software downloads
Public Member Functions | Friends

GAMGSolver Class Reference

Geometric agglomerated algebraic multigrid solver. More...

#include <OpenFOAM/GAMGSolver.H>

Detailed Description

Geometric agglomerated algebraic multigrid solver.

Characteristics:

  • Requires positive definite, diagonally dominant matrix.
  • Agglomeration algorithm: selectable and optionally cached.
  • Restriction operator: summation.
  • Prolongation operator: injection.
  • Smoother: Gauss-Seidel.
  • Coarse matrix creation: central coefficient: summation of fine grid central coefficients with the removal of intra-cluster face; off-diagonal coefficient: summation of off-diagonal faces.
  • Coarse matrix scaling: performed by correction scaling, using steepest descent optimisation.
  • Type of cycle: V-cycle with optional pre-smoothing.
  • Coarsest-level matrix solved using ICCG or BICCG.
Source files

Definition at line 72 of file GAMGSolver.H.

Inheritance diagram for GAMGSolver:
Collaboration diagram for GAMGSolver:

List of all members.

Public Member Functions

 TypeName ("GAMG")
 Runtime type information.
 GAMGSolver (const word &fieldName, const lduMatrix &matrix, const FieldField< Field, scalar > &interfaceBouCoeffs, const FieldField< Field, scalar > &interfaceIntCoeffs, const lduInterfaceFieldPtrsList &interfaces, const dictionary &solverControls)
 Construct from lduMatrix and solver controls.
virtual  ~GAMGSolver ()
virtual
lduMatrix::solverPerformance  		solve (scalarField &psi, const scalarField &source, const direction cmpt=0) const
 Solve.

Friends

class  GAMGPreconditioner

Constructor & Destructor Documentation

GAMGSolver ( const word &   fieldName,
const lduMatrix &   matrix,
const FieldField< Field, scalar > &   interfaceBouCoeffs,
const FieldField< Field, scalar > &   interfaceIntCoeffs,
const lduInterfaceFieldPtrsList &   interfaces,
const dictionary &   solverControls  
)

Construct from lduMatrix and solver controls.

Definition at line 45 of file GAMGSolver.C.

References Foam::exit(), Foam::FatalError, FatalErrorIn, and forAll.

~GAMGSolver (  ) [virtual]

Definition at line 127 of file GAMGSolver.C.

References forAll, and UPtrList< T >::set().

Member Function Documentation

TypeName ( "GAMG"    )

Runtime type information.

Reimplemented in GAMGPreconditioner.

Foam::lduMatrix::solverPerformance solve ( scalarField &   psi,
const scalarField &   source,
const direction   cmpt = 0  
) const [virtual]

Solve.

Implements lduMatrix::solver.

Definition at line 34 of file GAMGSolverSolve.C.

References lduMatrix::solverPerformance::checkConvergence(), Foam::endl(), lduMatrix::solverPerformance::finalResidual(), Foam::gSumMag(), lduMatrix::solverPerformance::initialResidual(), lduMatrix::solverPerformance::nIterations(), Foam::Pout, lduMatrix::solverPerformance::print(), and List< T >::size().

Friends And Related Function Documentation

friend class GAMGPreconditioner [friend]

Definition at line 206 of file GAMGSolver.H.

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