pressureFloor.yml 2.79 KB
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# Define the system of units to use internally. 
InternalUnitSystem:
  UnitMass_in_cgs:     2.0e33     # Solar masses
  UnitLength_in_cgs:   3.0857e21  # parsecs
  UnitVelocity_in_cgs: 1.0e5      # megameters per second
  UnitCurrent_in_cgs:  1          # Amperes
  UnitTemp_in_cgs:     1          # Kelvin

# Parameters governing the time integration
TimeIntegration:
  time_begin: 0.    # The starting time of the simulation (in internal units).
  time_end:   8e1  # The end time of the simulation (in internal units).
  dt_min:     1e-10  # The minimal time-step size of the simulation (in internal units).
  dt_max:     1e1  # The maximal time-step size of the simulation (in internal units).

# Parameters governing the snapshots
Snapshots:
  basename:            pressureFloor # Common part of the name of output files
  time_first:          0.         # Time of the first output (in internal units)
  delta_time:          1e0       # Time difference between consecutive outputs (in internal units)

# Parameters governing the conserved quantities statistics
Statistics:
  delta_time:          1e0 # Time between statistics output

# Parameters for the hydrodynamics scheme
SPH:
  resolution_eta:        1.2348   # Target smoothing length in units of the mean inter-particle separation (1.2348 == 48Ngbs with the cubic spline kernel).
  CFL_condition:         0.5      # Courant-Friedrich-Levy condition for time integration.
  minimal_temperature: 10.       # Kelvin
  
# Parameters related to the initial conditions
InitialConditions:
  file_name:  ./pressureFloor.hdf5     # The file to read
  periodic:   1
  
# Dimensionless pre-factor for the time-step condition
LambdaCooling:
  lambda_nH2_cgs:              1e-15 # Cooling rate divided by square Hydrogen number density (in cgs units [erg * s^-1 * cm^3])
  cooling_tstep_mult:          1e5        # Dimensionless pre-factor for the time-step condition

# Parameters related to pressure floors    ----------------------------------------------
GEARPressureFloor:
  Jeans_factor: 10

  # Parameters for the self-gravity scheme
Gravity:
  mesh_side_length:              12       # Number of cells along each axis for the periodic gravity mesh.
  eta:                           2.5     # Constant dimensionless multiplier for time integration.
  theta:                         0.7       # Opening angle (Multipole acceptance criterion).
  max_physical_DM_softening:     0.5    # Maximal Plummer-equivalent softening length in physical coordinates for DM particles (in internal units).
  max_physical_baryon_softening: 0.5    # Maximal Plummer-equivalent softening length in physical coordinates for baryon particles (in internal units).
  softening_ratio_background:    0.04      # Fraction of the mean inter-particle separation to use as Plummer-equivalent softening for the background DM particles.