# Parameter definitions for thorn SummationByParts
# $Header$

KEYWORD norm_type "Type of norm" STEERABLE=always
{
  "Diagonal" :: "Diagonal norm"
  "Full restricted" :: "Full resricted norm"
} "Diagonal"

KEYWORD operator_type "Type of operator" STEERABLE=always
{
  "Minimal Bandwidth" :: "Minimal bandwidth (except for 8-4 which is minimal spectral radius)"
  "Optimized" :: "Optimized for performance"
} "Optimized"

INT order "Order of accuracy" STEERABLE=always
{
  2:8:2 :: ""
} 2

BOOLEAN use_dissipation "Should we add dissipation"
{
} "no"

# Note: scaling the dissipation operators with h reduces the order by one.
BOOLEAN scale_with_h "Should we scale the dissipation with the grid spacing h"
{
} "no"

KEYWORD dissipation_type "Type of dissipation operator" STEERABLE=always
{
  "Mattson-Svard-Nordstrom" :: "Mattson, Svaerd and Nordstroem type"
  "Kreiss-Oliger" :: "Kreiss-Oliger modified near the boundaries"
} "Mattson-Svard-Nordstrom"

REAL epsdis "Dissipation strength" STEERABLE=always
{
  *:* :: "Values typical between 0 and 1"
} 0.2

REAL diss_fraction[3] "Fractional size of the transition region for the full restricted dissipation operator"
{
  0:0.5 :: ""
} 0.2

REAL h_scaling[3] "Scaling factor for the local grid spacing in the dissipation operators"
{
 0:* :: "Positive please"
} 1.0

STRING vars "List of evolved grid functions that should have dissipation added" STEERABLE=always
{
  .* :: "Must be a valid list of grid functions"
} ""

BOOLEAN zero_derivs_y "set all derivatives to 0 in the y-direction"
{
} "no"

BOOLEAN zero_derivs_z "set all derivatives to 0 in the z-direction"
{
} "no"

# If you use this parameter be careful. You have to know what you are doing...
BOOLEAN check_grid_sizes "Should we check grid sizes and ghost zones"
{
} "yes"