diff options
Diffstat (limited to 'param.ccl')
| -rw-r--r-- | param.ccl | 121 |
1 files changed, 115 insertions, 6 deletions
@@ -18,6 +18,78 @@ USES KEYWORD metric_type private: +############################################################ + +# +# ***** debugging parameters ***** +# + +# +# If this parameter is set to true, we output an ASCII data file +# giving psi on the 2D grid. The file format should be directly usable +# by a gnuplot 'splot' command. +# +Boolean output_psi2D \ + "should we output the conformal factor psi on the 2D grid?" +{ +} false + +string output_psi2D_file_name \ + "if we output the conformal factor psi on the 2D grid, \ + what file name should we use for the output file?" +{ +".+" :: "any non-empty string that's a valid file name" +} "psi2D.dat" + +# +# this parameter controls the amount of (potentially very detailed) +# debugging information this thorn prints +# +CCTK_INT debug \ + "level of debugging information to print \ + (0 = none, 2 = a little, 6 = a lot, 10 = huge amounts)" +{ +0:* :: "any integer >= 0" +} 0 + +# +# to keep the output size quasi-finite, some debug printing which is +# logicially "per grid point" on the 2-D (eta,q) grid, is actually only +# done for this single 2-D grid point +# +CCTK_INT debug_ii "i coordinate for per-2D-grid-point debug printing" +{ +* :: "any integer" +} 14 +CCTK_INT debug_jj "j coordinate for per-2D-grid-point debug printing" +{ +* :: "any integer" +} 15 + +# +# to keep the output size quasi-finite, some debug printing which is +# logicially "per Cactus grid point" is actually only done for this single +# Cactus grid point +# +CCTK_INT debug_i "i coordinate for per-grid-point debug printing" +{ +* :: "any integer" +} 14 +CCTK_INT debug_j "j coordinate for per-grid-point debug printing" +{ +* :: "any integer" +} 15 +CCTK_INT debug_k "k coordinate for per-grid-point debug printing" +{ +* :: "any integer" +} 10 + +############################################################ + +# +# ***** parameters controlling the Brill wave itself ***** +# + REAL amp "Brill wave amplitude" { *:* :: "No restriction" @@ -33,28 +105,65 @@ REAL sigma "Brill wave width (in eta)" *:* :: "No restriction" } 1.0 -REAL etamax "Eta value for outer edge of grid" +REAL etamax "eta value for outer edge of grid" { *:* :: "No restriction" } 5.0 - -INT n "sin^n theta in brill wave" +INT n "sin^n theta in Brill wave" { *:* :: "No restriction" } 2 -INT ne "Eta resolution for solve" +############################################################ + +# +# ***** parameters for the numerical solution of the ***** +# ***** Brill-wave equation on the 2-D (eta,q) grid ***** +# + +INT ne "eta resolution for solve" { *:* :: "No restriction" } 300 -INT nq "Theta resolution for solve" +INT nq "theta resolution for solve" { *:* :: "No restriction" } 50 +REAL error_tolerance "tolerance parameter for elliptic solver" +{ +(0:* :: "any positive real number" +} 1.0e-12 + +############################################################ + +# +# ***** interpolation parameters ***** +# + +# +# This thorn first computes the Brill wave solution on an internal 2-D +# grid, then interpolates this to the 3-D Cactus grid. The following +# parameters control this interpolation. +# + +STRING interpolator_name \ + "name of CCTK_InterpLocalUniform() interpolation operator" +{ +".*" :: "any string" +} "uniform cartesian" + +STRING interpolator_pars "parameters for the interpolation operator" +{ +".*" :: \ + "any nonempty string acceptable to Util_TableSetFromString() \ + and to the interpolator, or the empty string to use 'order=n', \ + where n is specified by the interpolation_order parameter" +} "" + INT interpolation_order "Order for interpolation" STEERABLE = ALWAYS { - 1:3 :: "Choose between first, second, and third-order" +0:9 :: "any integer accepted by the interpolator" } 1 |