CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFX

Can CFX user function be used to extract wall pressure and face element area?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 19, 2009, 08:35
Smile Can CFX user function be used to extract wall pressure and face element area?
  #1
New Member
 
Join Date: Jul 2009
Posts: 16
Rep Power: 7
dhxlxz is on a distinguished road
Hi all:
I am now doing some work about FSI. I want to extract the wall element area and its cooresponding static pressure. Can user fuction
be used to do this work ?
Thank you for your attention!!
dhxlxz is offline   Reply With Quote

Old   July 20, 2009, 02:16
Default
  #2
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,665
Rep Power: 84
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
Forget fortran. You can easily do this in CEL. Read the CFX documentation on CEL Expression language.

Glenn Horrocks
ghorrocks is offline   Reply With Quote

Old   July 20, 2009, 03:42
Smile what about the area and pressure of vertices "
  #3
New Member
 
Join Date: Jul 2009
Posts: 16
Rep Power: 7
dhxlxz is on a distinguished road
Hi , thank you very much for replying this topic. I want to extract the coordinate, area and pressure of all the vertices of a wall boundary. Is the CEL capable to do this work ?
Thank you !
dhxlxz is offline   Reply With Quote

Old   July 20, 2009, 18:44
Default
  #4
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,665
Rep Power: 84
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
Hi,

Why do you want the coordinates, area and pressure of all vertices?

Glenn Horrocks
ghorrocks is offline   Reply With Quote

Old   July 20, 2009, 22:32
Smile The coordinates and force act as loads
  #5
New Member
 
Join Date: Jul 2009
Posts: 16
Rep Power: 7
dhxlxz is on a distinguished road
Hi,
In case that all the coordinates, areas and pressure of a wall boundary are exported, they can be used to calculate loads. Then the loads will be assert on a structure to calculate its deformation.
Thank you for your attention
dhxlxz is offline   Reply With Quote

Old   July 20, 2009, 22:36
Default
  #6
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,665
Rep Power: 84
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
Hi,

Sounds like a standard FSI model. No need to do anything like fortran to export nodes. Just look in the tutorials for example FSI simulations.

Glenn
ghorrocks is offline   Reply With Quote

Reply

Tags
user fuction

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
How to read pressure at discrete points paka OpenFOAM 15 July 21, 2008 05:03
boundary pressure value at the face open to atmosp Gaurav Mehra FLUENT 0 April 21, 2008 09:50
UDF to monitor minimum pressure on the wall Arvind Jayaprakash FLUENT 0 September 20, 2007 11:53
Neumann pressure BC and velocity field Antech Main CFD Forum 0 April 25, 2006 02:15
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 06:13


All times are GMT -4. The time now is 19:08.