eagle_12.yml

# Define the system of units to use internally. 
InternalUnitSystem:
  UnitMass_in_cgs:     1.989e43      # 10^10 M_sun in grams
  UnitLength_in_cgs:   3.085678e24   # Mpc in centimeters
  UnitVelocity_in_cgs: 1e5           # km/s in centimeters 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:   1e-2  # 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:     1e-4  # The maximal time-step size of the simulation (in internal units).
  
# Parameters governing the snapshots
Snapshots:
  basename:            eagle # Common part of the name of output files
  time_first:          0.    # Time of the first output (in internal units)
  delta_time:          1e-3  # Time difference between consecutive outputs (in internal units)

# Parameters governing the conserved quantities statistics
Statistics:
  delta_time:          1e-2 # Time between statistics output

# Parameters for the self-gravity scheme
Gravity:
  eta:                   0.025    # Constant dimensionless multiplier for time integration.
  epsilon:               0.001    # Softening length (in internal units).
  theta:                 0.85     # Opening angle (Multipole acceptance criterion)
  
# 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:         0.1      # Courant-Friedrich-Levy condition for time integration.

# Parameters related to the initial conditions
InitialConditions:
  file_name:  ./EAGLE_ICs_12.hdf5     # The file to read