# Parameter definitions for thorn SummationByParts
# $Header$

restricted:

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

BOOLEAN sbp_1st_deriv "Should the 1st derivative operator be SBP" STEERABLE=always
{
} "yes"
  
BOOLEAN sbp_2nd_deriv "Should the 2nd derivative operator be SBP" STEERABLE=always
{
} "yes"
  
BOOLEAN sbp_upwind_deriv "Should the upwind derivative operator be SBP" STEERABLE=always
{
} "yes"
  
INT order "Order of accuracy" STEERABLE=always
{
  2:8:2 :: ""
} 2

BOOLEAN onesided_outer_boundaries "Evaluate derivatives within ghost zones of the outer boundary" STEERABLE=always
{
} "yes"

BOOLEAN onesided_interpatch_boundaries "Evaluate derivatives near the local grid boundary if it is an inter-patch boundary" STEERABLE=always
{
} "yes"

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

BOOLEAN use_variable_deltas "Use extra grid functions to allow for variable delta's in the dissipation operators"
{
} "no"

BOOLEAN use_shiftout "Should we use the boundary_shift_out parameters from CoordBase to shift the stencils of derivatives and dissipation"
{
} "no"

BOOLEAN poison_derivatives "Should we poison Dvar at boundary_shiftout perimeter when taking derivatives" STEERABLE=always
{
} "no"

BOOLEAN poison_dissipation "Should we poison rhs at boundary_shiftout perimeter when applying dissipation" STEERABLE=always
{
} "no"

REAL poison_value "Degree of intoxication" STEERABLE=always
{
  *:* :: "Anything you want"
} 666.0

# 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"