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# This parameter file
# sets up BH + Brill-wave initial data
# and evolves it with the standard CactusEinstein and AEIThorns thorns,
# finding the apparent horizon frequently
########################################
#
# ***** output setup (also see below for more output stuff) *****
#
ActiveThorns = "IOUtil IOBasic LocalReduce"
IO::out_dir = $parfile
########################################
#
# time integration
#
##Cactus::cctk_itlast = 0
Cactus::terminate = "time"
Cactus::cctk_final_time = 10
ActiveThorns = "Time"
Time::dtfac = 0.5 # dt = 0.025
ActiveThorns = "MoL"
MoL::verbose = "register"
# RK4 time integration
MoL::ODE_Method = "generic"
MoL::MoL_Intermediate_Steps = 4
MoL::MoL_Num_Scratch_Levels = 3
########################################
#
# basic grid setup
#
ActiveThorns = "Carpet CarpetLib CarpetInterp CarpetReduce"
Carpet::domain_from_coordbase = true
ActiveThorns = "SymBase"
ActiveThorns = "CoordBase"
CoordBase::domainsize = "spacing"
CoordBase::dx = 0.04
CoordBase::dy = 0.04
CoordBase::dz = 0.04
CoordBase::ncells_x = 80
CoordBase::ncells_y = 80
CoordBase::ncells_z = 80
#
# ghost zones
#
driver::ghost_size_x = 2
driver::ghost_size_y = 2
driver::ghost_size_z = 2
# ghost zones are outside the nominal grid
CoordBase::boundary_internal_x_lower = false
CoordBase::boundary_internal_x_upper = false
CoordBase::boundary_internal_y_lower = false
CoordBase::boundary_internal_y_upper = false
CoordBase::boundary_internal_z_lower = false
CoordBase::boundary_internal_z_upper = false
# ghost zone widths
CoordBase::boundary_size_x_lower = 2
CoordBase::boundary_size_x_upper = 2
CoordBase::boundary_size_y_lower = 2
CoordBase::boundary_size_y_upper = 2
CoordBase::boundary_size_z_lower = 2
CoordBase::boundary_size_z_upper = 2
# ghost zones start 1 point outside nominal grid boundary
CoordBase::boundary_shiftout_x_lower = 1
CoordBase::boundary_shiftout_x_upper = 1
CoordBase::boundary_shiftout_y_lower = 1
CoordBase::boundary_shiftout_y_upper = 1
CoordBase::boundary_shiftout_z_lower = 1
CoordBase::boundary_shiftout_z_upper = 1
# staggered grids everywhere
CoordBase::boundary_staggered_x_lower = true
CoordBase::boundary_staggered_x_upper = true
CoordBase::boundary_staggered_y_lower = true
CoordBase::boundary_staggered_y_upper = true
CoordBase::boundary_staggered_z_lower = true
CoordBase::boundary_staggered_z_upper = true
ActiveThorns = "CartGrid3D"
CartGrid3D::type = "CoordBase"
########################################
#
# BH + Brill-wave initial data
#
ActiveThorns = "ADMBase StaticConformal SpaceMask"
ADMBase::metric_type = "static conformal"
ADMBase::evolution_method = "none"
ADMBase::initial_lapse = "one"
ADMBase::initial_shift = "zero"
ActiveThorns = "AEILocalInterp"
ActiveThorns = "IDAxiBrillBH"
ADMBase::initial_data = "axibrillbh"
IDAxiBrillBH::amp = 1.0
IDAxiBrillBH::eta0 = 0.0
IDAxiBrillBH::sigma = 1.0
IDAxiBrillBH::etamax = 6.0
IDAxiBrillBH::n = 2
IDAxiBrillBH::ne = 1000
IDAxiBrillBH::nq = 2000
IDAxiBrillBH::interpolator_name = "Lagrange polynomial interpolation"
IDAxiBrillBH::interpolator_pars = "order=4"
########################################
#
# BSSN evolution with 1+log slicing
#
ActiveThorns = "CoordGauge ADMMacros ADMCoupling ADMConstraints ADMAnalysis"
ActiveThorns = "Boundary"
ActiveThorns = "BSSN_MoL"
ADMBase::lapse_evolution_method = "1+log"
BSSN_MoL::lapsesource = "modified"
BSSN_MoL::harmonic_f = 2.0
BSSN_MoL::LapsePsiPower = 4
BSSN_MoL::AlphaDissip = 0.002
ADMBase::evolution_method = "ADM_BSSN"
BSSN_MoL::stencil_size = 2
BSSN_MoL::advection = "upwind2"
BSSN_MoL::bound = "radiative"
Boundary::radpower = 2
########################################
#
# gamma-driver shift
#
ADMBase::shift_evolution_method = "gamma2"
BSSN_MoL::ShiftGammaCoeff = 0.75
BSSN_MoL::ShiftAlpPower = 1
BSSN_MoL::ShiftPsiPower = 4
BSSN_MoL::ShiftPhiPower = 0
BSSN_MoL::BetaDriver = 3.0 # scales with 1/M_adm
BSSN_MoL::BetaDriverPsi = 0.0
BSSN_MoL::BetaDriverPhi = 0.0
########################################
#
# find apparent horizons
#
ActiveThorns = "AEILocalInterp"
ActiveThorns = "SphericalSurface AHFinderDirect"
# run at poststep so excision mask is set for BSSN et al
AHFinderDirect::run_at_CCTK_ANALYSIS = false
AHFinderDirect::run_at_CCTK_POSTSTEP = true
AHFinderDirect::N_horizons = 1
AHFinderDirect::initial_guess_method[1] = "coordinate sphere"
AHFinderDirect::initial_guess__coord_sphere__radius[1] = 0.50
AHFinderDirect::find_every = 10
AHFinderDirect::h_base_file_name = "h"
AHFinderDirect::set_mask_for_all_horizons = true
AHFinderDirect::mask_radius_multiplier = 1.0
AHFinderDirect::mask_radius_offset = -5.0
AHFinderDirect::mask_buffer_thickness = 0.0
AHFinderDirect::mask_is_noshrink = true
AHFinderDirect::set_old_style_mask = true
AHFinderDirect::set_new_style_mask = false
########################################
#
# Lego Excision
#
ActiveThorns = "LegoExcision"
SpaceMask::use_mask = true
BSSN_MoL::excise = true
BSSN_MoL::excisiontype = "Lego"
ADMConstraints::excise = true
########################################
#
# ASCII output
#
ActiveThorns = "CarpetIOASCII"
CarpetIOASCII::out3D_ghosts = true
CarpetIOASCII::out3D_outer_ghosts = true
IOBasic::outInfo_every = 1
IOBasic::outInfo_vars = "
ADMConstraints::ham
ADMBase::alp
SpaceMask::emask
"
IOASCII::out1d_every = 10
IOASCII::out1d_vars = "
ADMConstraints::ham
ADMBase::alp ADMBase::shift
ADMAnalysis::grr
ADM_BSSN::ADM_BS_phi ADM_BSSN::ADM_BS_K
SpaceMask::emask
"
IOASCII::out2d_every = 1
##IOASCII::out2d_style = "gnuplot f(x,y)"
IOASCII::out2d_every = 10
IOASCII::out2d_vars = "
ADMConstraints::ham
ADMBase::alp ADMBase::shift
ADMAnalysis::grr
ADM_BSSN::ADM_BS_phi ADM_BSSN::ADM_BS_K
SpaceMask::emask
"
########################################
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