CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

[Fluent] DPM Time Step Independent Study

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 9, 2019, 22:05
Default [Fluent] DPM Time Step Independent Study
  #1
Member
 
Ramin
Join Date: Oct 2015
Posts: 33
Rep Power: 11
rmn_990 is on a distinguished road
Hi,
I have transient laminar flow and I use DPM to inject particles inside the flow. I assigned a trap boundary condition for a wall and the particles are supposed to hit the wall and consider trapped particles.
The strange thing that happens is that whenever I decrease the time step of the fluid flow, the number of particles sticking to the wall decrease.
This happens when in all time steps (below 0.3s) distribution of the velocity and pressure don't change anymore or in other words, the fluid flow becomes independent of the time step.
I would be highly appreciated if anyone can help me to know why particle flow can not become independent of the time step.
rmn_990 is offline   Reply With Quote

Reply

Tags
ansys, dpm, fluent


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Time Step Continuity Errors simpleFoam Dorian1504 OpenFOAM Running, Solving & CFD 1 October 9, 2022 10:23
Setting up Lid driven Cavity Benchmark with 1M cells for multiple cores puneet336 OpenFOAM Running, Solving & CFD 11 April 7, 2019 01:58
High Courant Number @ icoFoam Artex85 OpenFOAM Running, Solving & CFD 11 February 16, 2017 14:40
Star cd es-ice solver error ernarasimman STAR-CD 2 September 12, 2014 01:01
Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3 bookie56 OpenFOAM Installation 8 August 13, 2011 05:03


All times are GMT -4. The time now is 00:42.