Geometric result of crossing a cut cell: 4 cut distances per face, the 4 apertures alpha_f normalized in [0, 1] (alpha_f = face_distance / h), and the volume fraction kappa of the cell (share of the cell in the active domain). More...

#include <cut_fraction.hpp>

Collaboration diagram for pops::detail::CutFraction:

Public Attributes
Real	axm
	cut distance of face x- (toward i-1), in [1e-3*dx, dx]

Real	axp
	cut distance of face x+ (toward i+1)

Real	aym
	cut distance of face y- (toward j-1)

Real	ayp
	cut distance of face y+ (toward j+1)

Real	alpha_xm
	aperture of face x- = axm / dx, in [1e-3, 1]

Real	alpha_xp
	aperture of face x+ = axp / dx

Real	alpha_ym
	aperture of face y- = aym / dy

Real	alpha_yp
	aperture of face y+ = ayp / dy

Real	kappa
	volume fraction of the cell (share in the active domain), in (0, 1]

Detailed Description

Geometric result of crossing a cut cell: 4 cut distances per face, the 4 apertures alpha_f normalized in [0, 1] (alpha_f = face_distance / h), and the volume fraction kappa of the cell (share of the cell in the active domain).

axm/axp carry the x direction (neighbors i-1 / i+1), aym/ayp the y direction (neighbors j-1 / j+1).

alpha_f and kappa are the quantities that the EB TRANSPORT will consume (face flux attenuated by alpha_f, cell volume kappa); axm/axp/aym/ayp are what the ELLIPTIC already consumes for the Shortley-Weller weights. Everything is derived from the SAME cut_distance -> bit-for-bit consistency.

Member Data Documentation

◆ alpha_xm

Real pops::detail::CutFraction::alpha_xm

aperture of face x- = axm / dx, in [1e-3, 1]

◆ alpha_xp

Real pops::detail::CutFraction::alpha_xp

aperture of face x+ = axp / dx

◆ alpha_ym

Real pops::detail::CutFraction::alpha_ym

aperture of face y- = aym / dy

◆ alpha_yp

Real pops::detail::CutFraction::alpha_yp

aperture of face y+ = ayp / dy

◆ axm

Real pops::detail::CutFraction::axm

cut distance of face x- (toward i-1), in [1e-3*dx, dx]

◆ axp

Real pops::detail::CutFraction::axp

cut distance of face x+ (toward i+1)

◆ aym

Real pops::detail::CutFraction::aym

cut distance of face y- (toward j-1)

◆ ayp

Real pops::detail::CutFraction::ayp

cut distance of face y+ (toward j+1)

◆ kappa

Real pops::detail::CutFraction::kappa

volume fraction of the cell (share in the active domain), in (0, 1]

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

include/pops/numerics/elliptic/eb/cut_fraction.hpp

CutFraction Struct Reference¶

Public Attributes