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

boundary conditions for explosion in a tube

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 28, 2009, 13:36
Default boundary conditions for explosion in a tube
  #1
Member
 
Dennis Rown
Join Date: Oct 2009
Posts: 51
Rep Power: 17
shangzung is on a distinguished road
Hello!

I am simulating an explosion inside a tube. I can not figure out how to set the wall boundary conditions for the pressure p in the folder 0/p so that the wall pressure is calculated. Now I only can start simulation, when I set the wall boundaries for the walls to "fixedValue" and set that value to 1 bar. When I set them to "calculated", the simulation crashes in the first timestep. What am I doing wrong there?
shangzung is offline   Reply With Quote

Old   October 29, 2009, 14:06
Default
  #2
bhh
Member
 
Bjorn H. Hjertager
Join Date: Mar 2009
Posts: 72
Rep Power: 17
bhh is on a distinguished road
The boundary condition for pressure for walls should be zeroGradient.
rgds
Bjorn
bhh 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
Impinging Jet Boundary Conditions Anindya Main CFD Forum 25 February 27, 2016 13:58
inlet velocity boundary condition murali CFX 5 August 3, 2012 09:56
Boundary conditions for turbulent boundary layer Thomas FLUENT 1 June 17, 2008 06:14
Pressure boundary conditions Lionel S. Main CFD Forum 1 August 24, 2007 19:03
A problem about setting boundary conditions lyang Main CFD Forum 0 September 19, 1999 19:29


All times are GMT -4. The time now is 12:17.