# Define some meta-data about the simulation MetaData: run_name: Santa-Barbara cluster comparison project 256^3 # Define the system of units to use internally. InternalUnitSystem: UnitMass_in_cgs: 1.98841e43 # 10^10 Msun UnitLength_in_cgs: 3.08567758e24 # 1 Mpc UnitVelocity_in_cgs: 1e5 # 1 km/s UnitCurrent_in_cgs: 1 # Amperes UnitTemp_in_cgs: 1 # Kelvin # Cosmological parameters Cosmology: h: 0.5 a_begin: 0.047619048 # z_ini = 20 a_end: 1.0 # z_end = 0 Omega_cdm: 0.9 Omega_lambda: 0.0 Omega_b: 0.1 # Parameters governing the time integration TimeIntegration: dt_max: 0.01 dt_min: 1e-10 Scheduler: max_top_level_cells: 16 cell_split_size: 100 # Parameters governing the snapshots Snapshots: basename: santabarbara scale_factor_first: 0.05 delta_time: 1.02 # Parameters governing the conserved quantities statistics Statistics: delta_time: 1.02 scale_factor_first: 0.05 # Parameters for the self-gravity scheme Gravity: eta: 0.025 MAC: adpative theta_cr: 0.7 epsilon_fmm: 0.001 use_tree_below_softening: 1 comoving_DM_softening: 0.01 # 10 kpc = 1/25 mean inter-particle separation max_physical_DM_softening: 0.00263 # 10 ckpc = 2.63 pkpc at z=2.8 (EAGLE-like evolution of softening). comoving_baryon_softening: 0.01 # 10 kpc = 1/25 mean inter-particle separation max_physical_baryon_softening: 0.00263 # 10 ckpc = 2.63 pkpc at z=2.8 (EAGLE-like evolution of softening). mesh_side_length: 256 # Parameters of the hydro scheme SPH: resolution_eta: 1.2348 # "48 Ngb" with the cubic spline kernel h_min_ratio: 0.1 CFL_condition: 0.1 initial_temperature: 1200. # (1 + z_ini)^2 * 2.72K minimal_temperature: 100. # Parameters related to the initial conditions InitialConditions: file_name: ./SantaBarbara_256.hdf5 periodic: 1 cleanup_h_factors: 1 # ICs were generated for Gadget, we need to get rid of h-factors cleanup_velocity_factors: 1 # ICs were generated for Gadget, we need to get rid of sqrt(a) factors in the velocity generate_gas_in_ics: 1 # Generate gas particles from the DM-only ICs cleanup_smoothing_lengths: 1 # Since we generate gas, make use of the (expensive) cleaning-up procedure. # Impose primoridal metallicity EAGLEChemistry: init_abundance_metal: 0.0 init_abundance_Hydrogen: 0.752 init_abundance_Helium: 0.248 init_abundance_Carbon: 0.0 init_abundance_Nitrogen: 0.0 init_abundance_Oxygen: 0.0 init_abundance_Neon: 0.0 init_abundance_Magnesium: 0.0 init_abundance_Silicon: 0.0 init_abundance_Iron: 0.0 EAGLECooling: dir_name: ./coolingtables/ H_reion_z: 11.5 H_reion_eV_p_H: 2.0 He_reion_z_centre: 3.5 He_reion_z_sigma: 0.5 He_reion_eV_p_H: 2.0