CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Fluent UDF and Scheme Programming

DPM particle breakup

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 27, 2012, 03:58
Default DPM particle breakup
  #1
New Member
 
JH
Join Date: Jan 2012
Posts: 4
Rep Power: 5
Seppl is on a distinguished road
Hi,

I am trying to model the breakup of inert particles when impacting with walls in a user defined boundary condition (DEFINE_DPM_BC). Is it possible to make two or more particles from one single particle after an impact? I know that the particle's id is the pointer *p, but how can I create new particle ids?

Until now, I am only able to change the particle's diameter and velocity components and save the number of particles in a parcel in a user defined scalar. The problem is, however, that the particles in this parcel follow the same trajectory.

Thanks in advance
Seppl
Seppl is offline   Reply With Quote

Old   February 11, 2012, 09:34
Default
  #2
Senior Member
 
Join Date: Jun 2011
Posts: 108
Rep Power: 6
mali28 is on a distinguished road
Quote:
Originally Posted by Seppl View Post
Hi,

I am trying to model the breakup of inert particles when impacting with walls in a user defined boundary condition (DEFINE_DPM_BC). Is it possible to make two or more particles from one single particle after an impact? I know that the particle's id is the pointer *p, but how can I create new particle ids?

Until now, I am only able to change the particle's diameter and velocity components and save the number of particles in a parcel in a user defined scalar. The problem is, however, that the particles in this parcel follow the same trajectory.

Thanks in advance
Seppl
You can use the UDF posted at:

http://cape-forum.com/index.php/topic,528.0.html
mali28 is offline   Reply With Quote

Old   October 25, 2012, 07:47
Default
  #3
New Member
 
Mori
Join Date: Oct 2012
Posts: 4
Rep Power: 4
morihangi is on a distinguished road
Quote:
Originally Posted by Seppl View Post
Hi,

I am trying to model the breakup of inert particles when impacting with walls in a user defined boundary condition (DEFINE_DPM_BC). Is it possible to make two or more particles from one single particle after an impact? I know that the particle's id is the pointer *p, but how can I create new particle ids?

Until now, I am only able to change the particle's diameter and velocity components and save the number of particles in a parcel in a user defined scalar. The problem is, however, that the particles in this parcel follow the same trajectory.

Thanks in advance
Seppl
Hi Seppl
I've read your comment and understood that you know how to allocate some particles in a parcel.
i'm working on a DPM project and I don't know how to assign for example 100 particles to a parcel. Would you help me?
thanks,
morihangi is offline   Reply With Quote

Reply

Tags
dpm, particle id, return path_active

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
DPM particle tracking in stirred tank parisa- FLUENT 1 August 7, 2012 12:03
DPM particle tracking parisa- Main CFD Forum 2 June 15, 2011 05:12
DPM particle time step amos FLUENT 0 December 1, 2009 04:31
DPM UDF particle position using the macro P_POS(p)[i] dm2747 FLUENT 0 April 17, 2009 01:29
About Particle velocity of DPM in Fluent? long zhengwei FLUENT 0 March 13, 2009 05:02


All times are GMT -4. The time now is 14:37.