Unsteady DPM with steady solver
 

I believe from the user guide that it is possible to run unsteady tracking of a discrete phase with the steady flow solver.

I can track particles with steady tracking and the steady solution. However, when I change to unsteady particle tracking, set a particle time step size, number of steps and start and stop time (both zero for one injection) there seems to be no particles injected.

Can anybody help with this? I do not want to activate interaction with the continuous phase.

did you find solution to your query?

stop time for injection shoud be other than zero if you want to have injection!!

solution: use non-zero mass flow rate in injection dialog box
 

i can see that it has been more than 4 years since u asked this, but I am still going to answer it, in case anyone else too has the same query...

i was also facing this same problem, but now i just found the solution, so thought of sharing it...

in steady DPM u can do the analysis with flow rate = 0 in the injection dialog box, but not in unsteady DPM.

when u use unsteady DPM u need to specify the flowrate..the formula for flowrate is

number of particles in a parcel * (mass of each particle / time step).

that's it.

and u can use start time and end time both zero. in this case particle will be injected only once, if that is what you want.

for more details, refer

http://www.arc.vt.edu/ansys_help/flu..._unsteady.html

How to do repetition for DPM injection (surface type)