evolution::dg::subcell::SubcellOptions::UseHalo Struct Reference

Use a width-one halo of FD elements around any troubled element. More...

#include <SubcellOptions.hpp>

Public Types
using	type = bool
using	group = TroubledCellIndicator

Static Public Attributes
static constexpr Options::String	help

Detailed Description

Use a width-one halo of FD elements around any troubled element.

This provides a buffer of FD subcells so that as a discontinuity moves from one element to another we do not get any Gibbs phenomenon. In the case where we evolve the spacetime metric (e.g. GH+GRMHD) a halo region provides a buffer in case the stellar surface is near an element boundary. Since the GH variables are interpolated using high-order unlimited reconstruction, they can run into issues with Gibbs phenomenon.

Member Data Documentation

help

constexpr Options::String evolution::dg::subcell::SubcellOptions::UseHalo::help

staticconstexpr

Initial value:

= {
        "Use a width-one halo of FD elements around any troubled element."
        "\n"
        "This provides a buffer of FD subcells so that as a discontinuity "
        "moves from one element to another we do not get any Gibbs "
        "phenomenon."}

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

• src/Evolution/DgSubcell/SubcellOptions.hpp