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#: Parameter definitions for thorn Dissipation
# $Header$
BOOLEAN verbose "produce log output" STEERABLE=always
{
} "no"
INT order "Dissipation order" STEERABLE=always
{
1 :: "first order accurate dissipation (using a second derivative)"
3 :: "third order accurate dissipation (using a fourth derivative)"
} 3
REAL epsdis "Dissipation strength" STEERABLE=always
{
*:* :: "0 for no dissipation. Unstable for epsdis<0 and epsdis>1/3"
} 0.2
STRING vars "List of evolved grid functions that should have dissipation added" STEERABLE=always
{
.* :: "must be a valid list of grid functions"
} ""
# Extra dissipation in horizons
BOOLEAN extra_dissipation_in_horizons "extra dissipation in horizons" STEERABLE=always
{
} "no"
INT update_ah_every "how often to update the AH information for dissipation" STEERABLE=always
{
0:* :: "positive iteration number"
} 1
REAL ah_slope "Slope inside AH" STEERABLE=always
{
*:* :: "0 for no dissipation. Unstable when total epsdis<0 or total epsdis>1/3"
} 0.2
INT surface_number[100] "horizon number for extra dissipation in horizons -- SphericalSurface number" STEERABLE=always
{
-1 :: "do not use a spherical surface"
0:* :: "surface number (from SphericalSurface); starts from 0"
} -1
INT horizon_number[100] "horizon number for extra dissipation in horizons -- AHFinderDirect number" STEERABLE=always
{
-1 :: "do not use a horizon"
1:* :: "horizon number (from AHFinderDirect); starts from 1"
} -1
# Extra dissipation at outer boundary
BOOLEAN extra_dissipation_at_outerbound "increase dissipation at outer boundary" STEERABLE=always
{
} "no"
INT outer_bound_npoints "number of points in which dissipation should be increased" STEERABLE=always
{
0:* :: "positive number"
} 3
REAL ob_slope "slope at outer boundary" STEERABLE=always
{
0:* :: "increase dissipation"
} 5
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