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GalacticDynamicsExamples/06_plummer_intermediate_beta/params.yml
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# Define the system of units to use internally.
InternalUnitSystem:
UnitMass_in_cgs: 4.4356e+44
UnitLength_in_cgs: 3.085e+21
UnitVelocity_in_cgs: 9.78469e+07
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: 6.0 # 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-3 # The maximal time-step size of the simulation (in internal units).
Scheduler:
max_top_level_cells: 8
tasks_per_cell: 10
# Parameters governing the snapshots
Snapshots:
basename: snap/snapshot
time_first: 0.00 # Time of the first output (non-cosmological run) (in internal units)
delta_time: 0.01 # Time difference between consecutive outputs (in internal units)
# Parameters governing the conserved quantities statistics
Statistics:
scale_factor_first: 0.01408450704 # Scale-factor of the first stat dump (cosmological run)
time_first: 0.01 # Time of the first stat dump (non-cosmological run) (in internal units)
delta_time: 1.05 # Time between statistics output
# Parameters for the self-gravity scheme
Gravity:
mesh_side_length: 32
MAC: geometric # Choice of mulitpole acceptance criterion: 'adaptive' OR 'geometric'.
eta: 0.025 # Constant dimensionless multiplier for time integration.
theta_cr: 0.7 # Opening angle (Multipole acceptance criterion)
comoving_softening: 0.01 # Comoving softening length (in internal units).
max_physical_DM_softening: 0.01 # Physical softening length (in internal units).
# Parameters related to the initial conditions
InitialConditions:
file_name: plummer.hdf5
periodic: 0
shift: [10, 10, 10]
# This is used only for testing. By default, will have no effect (-self-gravity flag in run script)
PointMassPotential:
position: [10., 10., 10.] # Location of the point mass (internal units)
useabspos: 1 # Use absolute positions (0 for relative to centre)
mass: 100 # Mass of the point (internal units)
softening: 1.0 # Softening length (internal units)
timestep_mult: 0.1 # (Optional) The dimensionless constant C in the time-step condition
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