evrard.yml 2.07 KB
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# Define the system of units to use internally. 
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InternalUnitSystem:
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  UnitMass_in_cgs:     1   # Grams
  UnitLength_in_cgs:   1   # Centimeters
  UnitVelocity_in_cgs: 1   # 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).
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  time_end:   0.8   # The end time of the simulation (in internal units).
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  dt_min:     1e-7  # The minimal time-step size of the simulation (in internal units).
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  dt_max:     1e-3  # The maximal time-step size of the simulation (in internal units).
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# Parameters governing the snapshots
Snapshots:
  basename:            evrard # Common part of the name of output files
  time_first:          0.       # Time of the first output (in internal units)
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  delta_time:          0.1     # Time difference between consecutive outputs (in internal units)
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  compression:         4
  
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# Parameters governing the conserved quantities statistics
Statistics:
  delta_time:          1e-2 # 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:         0.1      # Courant-Friedrich-Levy condition for time integration.

# Parameters for the self-gravity scheme
Gravity:
  eta:                   0.025    # Constant dimensionless multiplier for time integration.
  epsilon:               0.001      # Softening length (in internal units).
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  theta:                 0.9
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  a_smooth:              1.25     # (Optional) Smoothing scale in top-level cell sizes to smooth the long-range forces over (this is the default value).
  r_cut:                 4.5      # (Optional) Cut-off in number of top-level cells beyond which no FMM forces are computed (this is the default value).

# Parameters related to the initial conditions
InitialConditions:
  file_name:  ./evrard.hdf5       # The file to read
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PhysicalConstants:
  G: 1.