Evolution parameters

Evolution parameters

• sph_variable_h

  • yes: Particles can have variable smoothing length over and in each iteration.
  • no: Particles will have the same smoothing length in each iteration.

• initial_dt (default 1)

  • Value of the initial timestep

• adaptive_timestep (default no)

  • yes: The timestep will be recomputed at every iteration based on either: acceleration, viscosity and energy.
  • no: Contant timestep.

• timestep_cfl_factor (default 0.25)

  • Courant-Friedrichs-Lewy factor (between the timestep and particle separation)