Changes between Version 488 and Version 489 of doc/app/initialization_parameters
- Timestamp:
- Feb 25, 2021 3:41:35 PM (4 years ago)
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doc/app/initialization_parameters
v488 v489 2225 2225 Time step for the 3d-model (in s).\\\\ 2226 2226 By default, (i.e. if a Runge-Kutta scheme is used, see [#timestep_scheme timestep_scheme]) the value of the time step is automatically calculated after each time step in order to follow the Courant Friedrichs Levy (CFL) criterion. This value is then used for the next step.\\\\ 2227 If '''dt''' is assigned a value, then the time step is fixed to this value throughout the whole run (whether it fulfills the time step criteria or not). However, changes are allowed for restart runs, because '''dt''' can also be used as a [../ d3parrun parameter].\\\\2227 If '''dt''' is assigned a value, then the time step is fixed to this value throughout the whole run (whether it fulfills the time step criteria or not). However, changes are allowed for restart runs, because '''dt''' can also be used as a [../runtime_parameters run parameter].\\\\ 2228 2228 In case that the automatically calculated time step meets the condition\\\\ 2229 2229 '''dt''' < 0.00001 * [../runtime_parameters#dt_max dt_max] (with dt_max = 20.0)\\\\