/MLTPS/ON
Multi-Domain Keyword Activates the multi-scale time step option, which allows each domain to use its own time step.
Format
/MLTPS/ON (facultative)
T_cut T_freq
Definition
| Field | Contents | SI Unit Example |
|---|---|---|
| T_cut | First synchronization time | |
| T_freq | Synchronization step |
Comments
- If the
multi-scale time step method is used, each domain is advancing with its own time
step. It means that only one domain is updated at a time, and time interpolations
are performed on the others. In order to prevent growing errors and improve
accuracy, it is recommended to define synchronization times where all Radioss domains are computed.Note: The time step of the domains will be truncated by RAD2RAD, in order to stop at synchronization times.
The first sync time is defined by T_cut and the next sync time is advanced by T_freq (T_sync = T_sync + T_freq).
Note: T_freq should be chosen large enough (compare to the time step of the domains) so that it won't affect the performance of the method.If /MLTPS/ON is not specified, RAD2RAD will use a mono-scale time step method. It means that RAD2RAD will impose the minimal time step on all connected domains: dt = min(dt1,dt2,...,dtn).