|
[Sponsors] |
Steady state DPM - Convergence and particle tracks |
![]() |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
![]() |
![]() |
#1 |
Guest
Posts: n/a
|
Hello All
I am trying to do a steady state DPM Model for droplets moving in a capillary from pressure inlet to pressure outlet The flow equations converge But when i try to solve for discrete particles with single particle injection, the particles log shows injection = 1 incomplete =1 for every particle this is the case and the contours show a non-zero DPM concentration for a little distance from inlet and beyond that the simulation doesn't seem to indicate particles moving any further. Particle tracks are getting terminated Can anyone tell where there is error in DPM modeling |
|
![]() |
![]() |
![]() |
#2 |
Guest
Posts: n/a
|
First of all I don't think there is any error, it's just a normal result for the DPM settings you're using. I suppose you have to increase the Max. Number of Steps in the DPM setup panel. I never use the default number (500) since it's too small for my simulations (I use at least 5000). It really depends on the length of your domain and you have to adjust it until there are no more incomplete trajectories. Then if your flow is turbulent you might want to increase the number of tries in the Injection setup panel.
Remus |
|
![]() |
![]() |
![]() |
#3 |
Guest
Posts: n/a
|
I usually end up using 75,000 as the max number of steps for DPM.
|
|
![]() |
![]() |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
convergence for transient/steady state simulation | Gab | CFX | 36 | August 20, 2012 12:55 |
Convergence problem using simpleFoam steady state | vvqf | OpenFOAM Running, Solving & CFD | 12 | May 18, 2011 07:51 |
particle-tracks | torsten | Siemens | 0 | January 30, 2007 08:58 |
Particle Tracks | Fabian | CFX | 2 | August 9, 2005 01:54 |
Particle Tracks | Andy | FLUENT | 2 | April 8, 2003 22:39 |