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

Pressure correction question - Please help!

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 5, 2003, 01:24
Default Pressure correction question - Please help!
  #1
Barry
Guest
 
Posts: n/a
Dear friends

I have 1-dimensional mesh with colocated variable arrangement. The mesh represents a pipe section.

The inlet velocity is fixed and the outlet velocity gradient is zero. The pressure at the outlet boundary is constant.

My questions: What must be the boundary conditions for the pressure correction eqn? (SIMPLE algorithm)

Also, how is the BC for the pressure correction eqn implemented? How do I ensure that the pressure at the outlet boundary does not change (we calculate cell values)? Therefore how do I ensure that the pressure correction will be zero at the outlet boundary face?

Typically how many iterations of the momentum solution for every pressure correction solution and how many global iterations required? (just a ball park figure will do)

Thank you Barry
  Reply With Quote

Old   February 5, 2003, 01:27
Default Pressure correction question - Please help!
  #2
Barry
Guest
 
Posts: n/a
Forgot to say:

The flow is steady, laminar and incompressible.
  Reply With Quote

Reply

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
Pressure BC for combustion chamber Giuki FLUENT 1 July 19, 2011 11:35
Divergence detected in AMG solver: pressure correction emlejeen FLUENT 4 August 7, 2010 06:45
basic question for pressure BC vivien OpenFOAM 0 November 23, 2009 06:01
pressure correction and absolure pressure George Main CFD Forum 5 March 22, 2005 07:10
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 16:29.