# ------------------  INPUTS TO MAIN PROGRAM  -------------------
max_step = 20000

# for pert_factor = 8.1d-3 -> max Mach number ~0.05
stop_time    = 4.5e-5
amr.plot_per = 4.5e-5



# PROBLEM SIZE & GEOMETRY
geometry.is_periodic = 1   0
geometry.coord_sys   = 0        # 0 => cart, 1 => RZ  2=>spherical
geometry.prob_lo     = 0   0
geometry.prob_hi     = 2.0 2.0
amr.n_cell           = 512 512

castro.ppm_type = 1

castro.riemann_solver = 1

castro.use_flattening = 1


# >>>>>>>>>>>>>  BC FLAGS <<<<<<<<<<<<<<<<
# 0 = Interior           3 = Symmetry
# 1 = Inflow             4 = SlipWall
# 2 = Outflow            5 = NoSlipWall
# >>>>>>>>>>>>>  BC FLAGS <<<<<<<<<<<<<<<<
castro.lo_bc       =  0   1
castro.hi_bc       =  0   1

castro.yl_ext_bc_type = 1
castro.yr_ext_bc_type = 1
castro.hse_interp_temp = 1

# WHICH PHYSICS
castro.do_hydro = 1
castro.do_react = 0
castro.do_grav  = 1

gravity.gravity_type = ConstantGrav
gravity.const_grav   = -1.e9

# TIME STEP CONTROL
castro.cfl            = 0.8     # cfl number for hyperbolic system
castro.init_shrink    = 0.1     # scale back initial timestep
castro.change_max     = 1.1     # max time step growth


# DIAGNOSTICS & VERBOSITY
castro.sum_interval   = 1       # timesteps between computing mass
castro.v              = 1       # verbosity in Castro.cpp
amr.v                 = 1       # verbosity in Amr.cpp

# REFINEMENT / REGRIDDING 
amr.max_level       = 0       # maximum level number allowed
amr.ref_ratio       = 2 2 2 2 # refinement ratio
amr.regrid_int      = 2 2 2 2 # how often to regrid
amr.blocking_factor = 64      # block factor in grid generation
amr.max_grid_size   = 64
amr.n_error_buf     = 2 2 2 2 # number of buffer cells in error est

amr.refinement_indicators = dengrad

amr.refine.dengrad.gradient = 0.01
amr.refine.dengrad.field_name = density
amr.refine.dengrad.max_level = 5

# CHECKPOINT FILES
amr.checkpoint_files_output = 0
amr.check_file      = chk        # root name of checkpoint file
amr.check_int       = -1         # number of timesteps between checkpoints

# PLOTFILES
amr.plot_file       = plt        # root name of plotfile
amr.derive_plot_vars = ALL

# problem initialization

problem.pert_factor = 8.1e-3
problem.dens_base = 1.65e-3
problem.pres_base = 1.65e6
problem.y_pert_center = 0.7e0
problem.pert_width = 0.025e0

problem.do_isentropic = 1