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

Particle Tacking and UDF

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 29, 2009, 05:25
Default Particle Tacking and UDF
  #1
New Member
 
Join Date: Apr 2009
Location: KA, Germany
Posts: 20
Rep Power: 16
Häwimeddel is on a distinguished road
I have a problem concerning DPM. If I hook a DEFINE_DPM_SCALAR_UPDATE udf to the discrete phase model (even if the UDF does not contain any code!) the particle tracking does not work properly any more. Meaning that most of the tracks are aborted, but are not being reported as aborted.

Quote:
number tracked = 250, escaped = 50, aborted = 0, trapped = 0, evaporated = 0, incomplete = 0
Upping the number of steps does not help.

As soon as I unhook the udf, it works. Any ideas?

Code:
DEFINE_DPM_SCALAR_UPDATE(particle_deposition, cell, thread, initialize, p)
{}
Häwimeddel is offline   Reply With Quote

Old   September 29, 2009, 10:56
Default
  #2
New Member
 
Join Date: Apr 2009
Location: KA, Germany
Posts: 20
Rep Power: 16
Häwimeddel is on a distinguished road
It apparently has to do sth with Accuracy Control settings. If I disable them it does not work, if I set them to lo it does not work, but set to 0.05 the tracks all escape.
Häwimeddel is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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



All times are GMT -4. The time now is 13:48.