DPM iteration intervals meaning

- January 28, 2020 at 6:58 pm
  
  Mohamadali
  Subscriber
  
  The description for DPM iteration intervals (allows you to control the frequency at which the particles are tracked and the DPM sources are updated) is not clear especially in case of unsteady tacking. I use to think that particles are tracked once in each time step that means the term frequency does not make sense. for example, If we have 20 iterations for each time step how is that possible to track particles after 10 iterations (if DPM iteration intervals is set on 10) with a not converged solution for the primary phase?
- January 29, 2020 at 6:12 am
  
  DrAmine
  Ansys Employee
  
  In unsteady particles are always tracked at the beginning of the time step independent of your setting with dpm interval.
- March 23, 2020 at 7:33 pm
  
  Ansan
  Subscriber
  
  For unsteady case, if DPM iteration interval doesn't matter than why does fluent ask to input the number for it?