BackwardEulerSolver Class Reference

#include <BackwardEulerSolver.H>

Inheritance diagram for BackwardEulerSolver:

[legend]Collaboration diagram for BackwardEulerSolver:

[legend]List of all members.

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Detailed Description

Implements BackwardEuler algorithm to update solution to heat equation.

The BackwardEulerSolver class implements the backward Euler algorithm for solving the heat equation.

Public Member Functions
	BackwardEulerSolver ()
	default constructor
	BackwardEulerSolver (const DisjointBoxLayout &a_levelGrids, const DisjointBoxLayout *a_crseGrids, const ProblemDomain &a_domain, Real a_dxLevel, int a_nRefCrse, const BaseHelmholtzOp *a_helmop, int a_ncomp=1)
	full constructor
virtual	~BackwardEulerSolver ()
	destructor
void	define (const DisjointBoxLayout &a_levelGrids, const DisjointBoxLayout *a_crseGrids, const ProblemDomain &a_domain, Real a_dxLevel, int a_nRefCrse, const BaseHelmholtzOp *a_helmop, int a_ncomp=1)
	define statement
void	updateSoln (LevelData< FArrayBox > &a_phiNew, LevelData< FArrayBox > &a_phiOld, LevelFluxRegister *a_FineFluxRegPtr, LevelFluxRegister *a_CrseFluxRegPtr, const LevelData< FArrayBox > *a_crsePhiOldPtr, Real crseOldTime, const LevelData< FArrayBox > *a_crsePhiNewPtr, Real crseNewTime, LevelData< FArrayBox > &a_src, Real oldTime, Real dt)
	do solve
void	computeDiffusion (LevelData< FArrayBox > &a_DiffusiveTerm, LevelData< FArrayBox > &a_phiOld, LevelFluxRegister *a_FineFluxRegPtr, LevelFluxRegister *a_crseFluxRegPtr, const LevelData< FArrayBox > *a_crsePhiOldPtr, Real crseOldTime, const LevelData< FArrayBox > *a_crsePhiNewPtr, Real crseNewTime, LevelData< FArrayBox > &a_src, Real oldTime, Real dt)
	computes time-centered diffusive term for explicit updating
virtual BaseHeatSolver *	new_heatSolver () const
	"virtual constructor"
virtual void	setSolverTolerance (Real a_solverTol)
	set solver tolerance
virtual Real	solverTolerance () const
	accessor
Protected Attributes
Real	m_dx
Real	m_solverTol
BaseHelmholtzOp *	m_helmop
BaseHelmholtzOp *	m_noBetaOp
LevelHelmholtzSolver	m_levelSolver
ProblemDomain	m_domain

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Constructor & Destructor Documentation

BackwardEulerSolver::BackwardEulerSolver (   )

default constructor

BackwardEulerSolver::BackwardEulerSolver (  const DisjointBoxLayout &  a_levelGrids, const DisjointBoxLayout *  a_crseGrids, const ProblemDomain &  a_domain, Real  a_dxLevel, int  a_nRefCrse, const BaseHelmholtzOp *  a_helmop, int  a_ncomp = 1 )

full constructor Note that the HelholtzOp passed in must already have the diffusion coefficient (nu) set.

virtual BackwardEulerSolver::~BackwardEulerSolver (   )  [virtual]

destructor

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Member Function Documentation

void BackwardEulerSolver::define (  const DisjointBoxLayout &  a_levelGrids, const DisjointBoxLayout *  a_crseGrids, const ProblemDomain &  a_domain, Real  a_dxLevel, int  a_nRefCrse, const BaseHelmholtzOp *  a_helmop, int  a_ncomp = 1 )  [virtual]

define statement Note that the HelholtzOp passed in must already have the diffusion coefficient (nu) set. Implements BaseHeatSolver.

void BackwardEulerSolver::updateSoln (  LevelData< FArrayBox > &  a_phiNew, LevelData< FArrayBox > &  a_phiOld, LevelFluxRegister *  a_FineFluxRegPtr, LevelFluxRegister *  a_CrseFluxRegPtr, const LevelData< FArrayBox > *  a_crsePhiOldPtr, Real  crseOldTime, const LevelData< FArrayBox > *  a_crsePhiNewPtr, Real  crseNewTime, LevelData< FArrayBox > &  a_src, Real  oldTime, Real  dt )  [virtual]

do solve update phi Parameters: a_src  note that a_src isn't const because of C/F bcs Implements BaseHeatSolver.

void BackwardEulerSolver::computeDiffusion (  LevelData< FArrayBox > &  a_DiffusiveTerm, LevelData< FArrayBox > &  a_phiOld, LevelFluxRegister *  a_FineFluxRegPtr, LevelFluxRegister *  a_crseFluxRegPtr, const LevelData< FArrayBox > *  a_crsePhiOldPtr, Real  crseOldTime, const LevelData< FArrayBox > *  a_crsePhiNewPtr, Real  crseNewTime, LevelData< FArrayBox > &  a_src, Real  oldTime, Real  dt )  [virtual]

computes time-centered diffusive term for explicit updating compute time-centered L(phi) for use in subsequent update operations. In this case, we do solve for phiNew, then subtract source and old phi back out to get L(phi). Implements BaseHeatSolver.

virtual BaseHeatSolver* BackwardEulerSolver::new_heatSolver (   )  const [virtual]

"virtual constructor" Implements BaseHeatSolver.

virtual void BackwardEulerSolver::setSolverTolerance (  Real  a_solverTol  )  [virtual]

set solver tolerance Implements BaseHeatSolver.

virtual Real BackwardEulerSolver::solverTolerance (   )  const [virtual]

accessor Implements BaseHeatSolver.

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Member Data Documentation

Real BackwardEulerSolver::m_dx [protected]

Real BackwardEulerSolver::m_solverTol [protected]

BaseHelmholtzOp* BackwardEulerSolver::m_helmop [protected]

BaseHelmholtzOp* BackwardEulerSolver::m_noBetaOp [protected]

LevelHelmholtzSolver BackwardEulerSolver::m_levelSolver [protected]

ProblemDomain BackwardEulerSolver::m_domain [protected]

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

• BackwardEulerSolver.H

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