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

6 DOF UDF touch wall

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 28, 2013, 08:00
Default 6 DOF UDF touch wall
  #1
New Member
 
Join Date: Mar 2013
Posts: 5
Rep Power: 3
asier is on a distinguished road
I'm simulating a particle in a tube with a flow using 6 DOF UDF. The problem I've got is that Fluent gives me an error (negative cell found) when this rigid particle touches the wall of the tube. I don't know if there is any solution. Thanks

And if I define two different rigid particles, if I will get the same error when they touch each other.
asier is offline   Reply With Quote

Old   June 28, 2013, 15:55
Default Answer
  #2
Member
 
sadjad.s's Avatar
 
sadjad
Join Date: Jan 2012
Posts: 57
Rep Power: 4
sadjad.s is on a distinguished road
Send a message via Yahoo to sadjad.s
Hi mate,
As far as I know Fluent can not model strike of two walls with 6DoF.
You see, this process is rather mechanical.
__________________
ICEM, CFX and Fluent expert
sadjad.s is offline   Reply With Quote

Old   June 28, 2013, 17:23
Default Thanks
  #3
New Member
 
Join Date: Mar 2013
Posts: 5
Rep Power: 3
asier is on a distinguished road
Thanks for your answer.

Just say that I don't want to smash a particle against a wall, I've got a curve pipe and I want to see how particles with different shapes behave. Is not possible with fluent? When the particle touches the wall I get always the error.

Thanks again mate
asier is offline   Reply With Quote

Old   June 29, 2013, 05:32
Default Reanswer
  #4
Member
 
sadjad.s's Avatar
 
sadjad
Join Date: Jan 2012
Posts: 57
Rep Power: 4
sadjad.s is on a distinguished road
Send a message via Yahoo to sadjad.s
I have already tried what you want but it seems impossible with fluent.
__________________
ICEM, CFX and Fluent expert
sadjad.s is offline   Reply With Quote

Reply

Tags
6 dof, udf error, wall error

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
Enhanced Wall Treatment paduchev FLUENT 18 April 11, 2014 07:37
Accessing wall shear stress using UDF Robert Fluent UDF and Scheme Programming 2 July 31, 2013 08:34
Natural convection in a closed domain STILL NEEDING help! Yr0gErG FLUENT 3 June 12, 2013 02:12
How to get the wall shear stress by UDF Chen Fangzhi FLUENT 2 May 21, 2010 09:32
UDF hook on the WALL boundary condition Luke FLUENT 0 June 7, 2006 11:54


All times are GMT -4. The time now is 12:15.