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

I dont wana force concenteration at Pressure BC's

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 15, 2006, 01:22
Default I dont wana force concenteration at Pressure BC's
  #1
Mazyar
Guest
 
Posts: n/a
Hello.

Thanks for your interest in reading my question.

The inlet to my domain carries air with some particle. Many BC's are pressure-outlet BC's. I would like to solve to find the concentrations, while pressure-outlet BC, asks to specify the concentrations at these BC's. Do you have any suggestion that how I can solve this problem?

Thanks, Mazyar

  Reply With Quote

Old   April 15, 2006, 02:08
Default Re: I dont wana force concenteration at Pressure B
  #2
Venkatesh.V
Guest
 
Posts: n/a
The species concentration specified at pressure oulet will used oly if backflow happens.
  Reply With Quote

Old   April 15, 2006, 02:42
Default Re: I dont wana force concenteration at Pressure B
  #3
Mazyar
Guest
 
Posts: n/a
Thanks for your replies, even when they are used when there is backflow, how can I know the concentrations on the boundaries? That is my uknown of the problem.

Thanks,

  Reply With Quote

Old   April 16, 2006, 09:47
Default Re: I dont wana force concenteration at Pressure B
  #4
Venkatesh V
Guest
 
Posts: n/a
2 Options ...

Provide better guess for concentration at oulet based on engineering judgement

or

Extend the outlet so that backflow would not happen and fluent will not use those data.
  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
Mass flow BCs and Pressure differential BC CFDLife CFX 5 January 26, 2009 08:14
How to read pressure at discrete points paka OpenFOAM 15 July 21, 2008 05:03
DEFINE_CG_MOTION and pressure force Teo Fumagalli FLUENT 0 April 11, 2008 10:25
Too high pressure force ? Tim Franke Main CFD Forum 1 March 15, 2000 00:36


All times are GMT -4. The time now is 07:11.