SingleLevelGradient Class Reference

Class to encapsulate Gradient functions (both CC and face-centered) More...

#include <SingleLevelGradient.H>

Static Public Member Functions
static void	levelGradientCC (LevelData< FArrayBox > &a_grad, const LevelData< FArrayBox > &a_phi, const Real a_dx)
	computes cell-centered, level-operator gradient of cell-centered phi More...
static void	compGradientCC (LevelData< FArrayBox > &a_Grad, const LevelData< FArrayBox > &a_phi, const LevelData< FArrayBox > *a_phiFinePtr, const Real a_dx, const int a_nRefFine, const ProblemDomain &a_dProblem)
	computes cell-centered composite gradient of cell-centered phi More...
static void	levelGradientMAC (LevelData< FluxBox > &a_edgeGrad, const LevelData< FArrayBox > &a_phi, const Real a_dx)
	computes edge-centered level-operator gradient of cell-centered phi More...

Detailed Description

Class to encapsulate Gradient functions (both CC and face-centered)

(DFM-10/17/08) – note that this version has been gutted to only have the most basic single-level Gradient because AMRTools doesn't compile in 4D yet

Member Function Documentation

levelGradientCC()

static void SingleLevelGradient::levelGradientCC ( LevelData< FArrayBox > &  a_grad, const LevelData< FArrayBox > &  a_phi, const Real  a_dx  )

static

computes cell-centered, level-operator gradient of cell-centered phi

in this case, assume that all relevant BC's (coarse-fine and physical) have already been set, so phi can be a const variable

compGradientCC()

static void SingleLevelGradient::compGradientCC ( LevelData< FArrayBox > &  a_Grad, const LevelData< FArrayBox > &  a_phi, const LevelData< FArrayBox > *  a_phiFinePtr, const Real  a_dx, const int  a_nRefFine, const ProblemDomain &  a_dProblem  )

static

computes cell-centered composite gradient of cell-centered phi

this one assumes that all ghost-cell values have already been set; if phiFinePtr != NULL, then also uses one-sided differencing to compute gradient on coarse side of corarse-fine interface. note that gradient is only really defined in valid regions of grids.

levelGradientMAC()

static void SingleLevelGradient::levelGradientMAC ( LevelData< FluxBox > &  a_edgeGrad, const LevelData< FArrayBox > &  a_phi, const Real  a_dx  )

static

computes edge-centered level-operator gradient of cell-centered phi

assumes ALL ghost cell values have been preset (so phi can be const)

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

• SingleLevelGradient.H