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# This parameter file sets up Misner initial data and time-evolves
# it with maximal slicing and gamma-driver shift. It finds apparent
# horizons with both AHFinderDirect and AHFinder, to allow comparison
# of the two apparent horizon finders' results.
#
# Note that the grid is very high-resolution to ensure that both
# apparent horizon finders find the horizons properly. Even with
# the fairly large number of grid points (the evolution takes around
# 830 megabytes of memory on an AEI xeon), this means that the outer
# boundary is very close in, so the boundary conditions are pretty
# inaccurate. But this doesn't matter for the purposes of this
# test
#
########################################
ActiveThorns = "BAM_Elliptic ADMBase ADMConstraints StaticConformal Ellbase CartGrid3D Time PUGH PUGHReduce PUGHSlab IOAscii IOUtil IOBasic ADMCoupling ADMMacros ADMAnalysis SpaceMask CoordGauge ADM_BSSN Boundary PUGHInterp Maximal NaNChecker AHFinder LocalInterp AHFinderDirect"
########################################
#
# physics
#
admbase::initial_data = "misner"
bam_elliptic::misner_mu = 2.0
#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#
# grid
#
driver::global_nx = 83
driver::global_ny = 83
driver::global_nz = 116
time::dtfac = 0.25
grid::type = "byspacing"
grid::avoid_origin = "true"
grid::dxyz = 0.04
grid::domain = "bitant"
pugh::ghost_size = 2
cactus::cctk_itlast = 2000 # t=20
########################################
#
# output
#
IOBasic::outScalar_every = 1
IOASCII::out1D_every = 10
IOBasic::outInfo_every = 1
IO::recover = "no"
IO::verbose = "standard"
IOUtil::parfile_write = "no"
IOBasic::outScalar_vars = "admanalysis::grr admbase::alp admbase::betax admbase::betay admbase::betaz adm_bssn::adm_bs_gyy adm_bssn::adm_bs_k adm_bssn::adm_bs_gx adm_bssn::adm_bs_phi admconstraints::momx admconstraints::ham"
IOBasic::outInfo_vars = "admconstraints::ham admbase::alp"
IOASCII::out1D_vars = "admanalysis::grr ADMBase::gxx admbase::gyy ADMBase::gzz admbase::alp StaticConformal::psi admconstraints::momx admconstraints::ham"
########################################
NaNChecker::check_every = 1
NaNChecker::check_vars = "admbase::lapse admbase::shift admbase::metric admbase::curv adm_bssn::adm_bssn_phi adm_bssn::adm_bssn_metric adm_bssn::adm_bssn_curv adm_bssn::adm_bssn_gamma adm_bssn::adm_bssn_k"
NaNChecker::action_if_found = "abort"
########################################
#
# standard ADM_BSSN evolution
#
admbase::metric_type = "static conformal"
staticconformal::conformal_storage = "factor+derivs+2nd derivs"
admbase::evolution_method = "adm_bssn"
adm_bssn::method = "icn"
adm_bssn::ICN_itnum = 3
adm_bssn::bound = "radiative"
adm_bssn::stencil_size = 2
adm_bssn::advection = "upwind2"
boundary::radpower = 2
########################################
#
# maximal slicing
#
admbase::initial_lapse = "ssapprox"
admbase::lapse_evolution_method = "maximal"
adm_bssn::forceKzero = "yes"
maximal::max_every = 5
maximal::max_solver = "bam"
maximal::max_bound = "robin"
maximal::max_robin_falloff = 1
maximal::max_robin_inf = 1.0
maximal::maximal_thresh = 1e-08
bam_elliptic::maximal_maxcycles = 250
bam_elliptic::bam_laplacian = "delginv"
bam_elliptic::maximal_verbose = "no"
bam_elliptic::bam_fullV = "no"
bam_elliptic::maximal_coarsetol = 1e-10
bam_elliptic::bam_solve_nmin = 10
bam_elliptic::bam_solve_nmax = 500
bam_elliptic::bam_solve_normmax = 1e-10
bam_elliptic::bam_persist = "yes"
bam_elliptic::bam_bound = "bamrobin"
########################################
#
# gamma-driver shift
#
admbase::initial_shift = "zero"
admbase::shift_evolution_method = "gamma2"
adm_bssn::ShiftGammaCoeff = 0.75
adm_bssn::ShiftAlpPower = 1
adm_bssn::ShiftPsiPower = 4
adm_bssn::ShiftPhiPower = 0
adm_bssn::BetaDriver = 2.8
adm_bssn::BetaDriverPsi = 0.0
adm_bssn::BetaDriverPhi = 0.0
#########################################
# AHFinder
#
AHFinder::ahf_active = "yes"
AHFinder::ahf_find3 = "no"
AHFinder::ahf_flow = "no" # minimization algorithm
AHFinder::ahf_verbose = "no"
AHFinder::ahf_veryverbose = "no"
AHFinder::ahf_guessverbose = "yes"
AHFinder::ahf_findevery = 20
AHFinder::ahf_guessold = "yes"
AHFinder::ahf_2Doutput = "yes"
AHFinder::ahf_gaussout = "yes"
AHFinder::ahf_phi = "no" # axisymmetry
AHFinder::ahf_refx = "yes" # reflection symmetry x <--> -x
AHFinder::ahf_refy = "yes" # reflection symmetry y <--> -y
AHFinder::ahf_lmax = 10
AHFinder::ahf_maxiter = 15
AHFinder::ahf_offset = "yes"
AHFinder::ahf_xc = 0.0
AHFinder::ahf_yc = 0.0
AHFinder::ahf_zc = 1.0
AHFinder::ahf_wander = "no" # for easier cmp with AHFinderDirect
# initial guess
AHFinder::ahf_sloppyguess = "yes"
AHFinder::ahf_r0 = 0.3
# surface integrals
AHFinder::ahf_ntheta = 50 # as low as 50
########################################
#
# AHFinderDirect
#
AHFinderDirect::find_AHs_at_postinitial = "true"
AHFinderDirect::find_AHs_at_poststep = "true"
AHFinderDirect::verbose_level = "algorithm highlights"
AHFinderDirect::h_base_file_name = "misner.h"
AHFinderDirect::how_often_to_output_h = 10 # time steps
AHFinderDirect::N_horizons = 2
AHFinderDirect::origin_x[1] = 0.0
AHFinderDirect::origin_y[1] = 0.0
AHFinderDirect::origin_z[1] = 1.0
AHFinderDirect::initial_guess_method[1] = "coordinate sphere"
AHFinderDirect::initial_guess__coord_sphere__x_center[1] = 0.0
AHFinderDirect::initial_guess__coord_sphere__y_center[1] = 0.0
AHFinderDirect::initial_guess__coord_sphere__z_center[1] = 1.0
AHFinderDirect::initial_guess__coord_sphere__radius[1] = 0.3
AHFinderDirect::origin_x[2] = 0.0
AHFinderDirect::origin_y[2] = 0.0
AHFinderDirect::origin_z[2] = 0.0
AHFinderDirect::initial_guess_method[1] = "coordinate ellipsoid"
AHFinderDirect::initial_guess__coord_ellipsoid__x_center[2] = 0.0
AHFinderDirect::initial_guess__coord_ellipsoid__y_center[2] = 0.0
AHFinderDirect::initial_guess__coord_ellipsoid__z_center[2] = 0.0
AHFinderDirect::initial_guess__coord_ellipsoid__x_radius[2] = 0.8
AHFinderDirect::initial_guess__coord_ellipsoid__y_radius[2] = 0.8
AHFinderDirect::initial_guess__coord_ellipsoid__z_radius[2] = 1.4
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