|January 28, 2011, 11:39||
Unsteady DPM with steady solver
Join Date: Nov 2009
Posts: 3Rep Power: 8
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.
|May 31, 2015, 04:11||
solution: use non-zero mass flow rate in injection dialog box
Join Date: Mar 2015
Posts: 14Rep Power: 3
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).
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
|particle tracking, steady|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Adding heat source to chtMultiRegionFoam||maddalena||OpenFOAM Programming & Development||59||Today 07:10|
|steady to unsteady||wlt_1985||FLUENT||6||December 4, 2010 17:17|
|On Setring Step Size in unsteady Solver of FLUENT||lzgwhy||FLUENT||0||August 19, 2009 22:44|
|DPM Steady formulation with collisions||kulwinder||FLUENT||0||May 22, 2004 18:44|
|Difference results between Steady and Unsteady?||Giang T Vu||FLUENT||6||May 22, 2004 06:37|