Select the Auto Save... menu item from the File menu.
In the Auto Save dialog, tick the checkbox of the Enabled property.
Set the Frequency property. This is the number of intervals in the simulation that will pass between auto saves. However, if you select Delta Time in the Trigger Type property, then the Delta Time property will control the frequency of auto saves.
If you want STAR-CCM+ to save one or more copies instead of overwriting the same simulation file, set the Max Autosaved Files property.
Select the Trigger Type. This specifies the type of solution step that should trigger the auto save operation. Since this is for a transient analysis, the setting should be either Time-Step or Delta Time.
Select Time-Step if you want STAR-CCM+ to auto save every given number of time-steps. If you want to base the auto save on the passage of time as modeled in the STAR-CCM+ calculations, then select Delta Time.
If you set the Trigger Type property to Delta Time, then be sure to decide on a setting for the Delta Time property, which represents units of time in the simulation. It is this setting, rather than the Frequency property, that will specify the time interval between the auto saves.
Click Close. STAR-CCM+ will automatically save during the next run at the intervals you specified.
To deactivate this feature, simply reopen the Auto Save dialog and clear the checkbox of the Enabled property.