From 1973e5b8fe2d76d877fdf0203447633ef15249c5 Mon Sep 17 00:00:00 2001 From: jthorn Date: Thu, 20 Nov 2003 16:03:21 +0000 Subject: add new parameter real min_horizon_size_for_mask \ "only set mask if min horizon radius >= this number of local grid spacings" docs will follow shortly... git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinAnalysis/AHFinderDirect/trunk@1208 f88db872-0e4f-0410-b76b-b9085cfa78c5 --- param.ccl | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'param.ccl') diff --git a/param.ccl b/param.ccl index 4c4e2e8..3c2a842 100644 --- a/param.ccl +++ b/param.ccl @@ -527,6 +527,26 @@ boolean mask_is_noshrink \ { } "true" +# +# If we're using mesh refinement (eg Carpet) it's possible to find a +# horizon on a fnie grid, and then set a mask on a coarser grid where +# the masked-off region is only a few grid points across. This then +# confuses various other thorns (eg LegoExcision) which require excised +# regions to be "not too small". +# +# So... This parameter may be used to specify that the mask not be set +# for a given horizon (just as if that horizon wasn't found) on any grid +# where the ratio +# BH_diagnostics.min_radius / max(Delta_x,Delta_y,Delta_z) +# (where Delta_[xyz] are the *LOCAL* grid spacings on the current grid) +# is too small (in particular, < this parameter). +# +real min_horizon_size_for_mask \ + "only set mask if min horizon radius >= this number of local grid spacings" +{ +0.0:* :: "any real number >= 0.0" +} 0.0 + # # This thorn supports two types of mask grid functions: # * the "old" style is that defined by CactusEinstein/AHFinder: -- cgit v1.2.3