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

Udf dpm path

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 20, 2017, 23:48
Default Udf dpm path
  #1
New Member
 
Yoon
Join Date: Mar 2015
Location: Seoul
Posts: 22
Rep Power: 11
touyet is on a distinguished road
Quote:
Originally Posted by pakk View Post
Fluent UDF manual 2.5.1:

"For the return status PATH_ACTIVE, the particle continues to track. For the return status PATH_ABORT, the particle will be stopped and considered to be aborted. For the return status PATH_END, the particle will be stopped as well, but considered to have escaped from the domain."

If you want a particle to be "trapped", use PATH_ABORT; if you want a particle to be "escaped", use PATH_END.
Honestly, I don't know if there is any aspect in which Fluent treats "trapped" particles differently from "escaped" particles, but if I used this I try to choose the most logical condition in my situation.

As of Fluent 15.0, there are seven different statuses (see dpm_types.h, somewhere in your Fluent folder):

PATH_END
PATH_ACTIVE
PATH_BREAK
PATH_ABORT
PATH_STOP
PATH_NON_LOCAL_PERIODIC
PATH_NON_LOCAL

They are listed without explanation, and I don't know more. I would guess that PATH_BREAK indicated a break-up of a particle, and that PATH_NON_LOCAL_PERIODIC and PATH_NON_LOCAL might have to do with parallel issues. I don't know when PATH_STOP should be used, nor what it does.
Hi

currently I describe filter in fluent and I want know how to write UDF about Filteration.

I use

DEFINE_DPM_BC(bc_wall_jet, p, thread, f, f_normal, dim) to Porous Jump BC

and I want konw what is the PASS Though ( like interior ) Condition in below or ETC..

PATH_END
PATH_ACTIVE
PATH_BREAK
PATH_ABORT
PATH_STOP
PATH_NON_LOCAL_PERIODIC
PATH_NON_LOCAL

Need your help

Sincerely-
touyet is offline   Reply With Quote

Old   September 18, 2017, 13:41
Default
  #2
New Member
 
Pengze Yang
Join Date: Sep 2017
Posts: 2
Rep Power: 0
Pengze Yang is on a distinguished road
Same question. Please help if someone has solved it!
Pengze Yang 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to follow the path of a particle in DPM? upeksa Fluent UDF and Scheme Programming 2 November 26, 2014 12:18
please help me. i have question about the UDF at the DPM motallebi FLUENT 0 July 6, 2009 12:27
Velocity of Fluid @ different positions of Particle in DPM using UDF pmghadge FLUENT 1 June 16, 2009 20:11
DPM: using UDF for creating and deleting Particles Markus Alzon FLUENT 0 July 4, 2007 02:18
UDF DPM injection M.A. Rakib FLUENT 0 June 13, 2000 09:28


All times are GMT -4. The time now is 20:00.