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

Variable Pressure boundary condition

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 3, 2012, 17:10
Default Variable Pressure boundary condition
  #1
Member
 
Kalyan
Join Date: Oct 2011
Location: Columbus, Ohio
Posts: 53
Blog Entries: 1
Rep Power: 14
kalyangoparaju is on a distinguished road
Guys,

I am validating wing tip vortices genereation from a rounded tip wing ( chow et. al 1997). I am trying to compare the unmodified SA with modified SA. I have decent results for unmodified SA ( compared to other validations using SA) but modified SA doesn't really do a good job.

The outflow boundary is very close to the wing ( just around 2-3 chord lengths) and I have given a pressure outlet with gauge pressure as 0. I know this cannot be the case since there is a vortex and this definitely won't work.

Is there a way to specific a varying pressure on the outlet based on any other parameter. For ex. constant mass flow rate and calculation of pressure over the boundary from that or any other boundary condition where you needn't specific pressure over the boundary but rather it is calculated.

Kalyan
kalyangoparaju is offline   Reply With Quote

Reply


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
Pressure boundary condition C-H Kuo Main CFD Forum 18 September 16, 2016 03:19
Setting outlet Pressure boundary condition using CAFFA code Mukund Pondkule Main CFD Forum 0 March 16, 2011 03:23
External Radiation Boundary Condition (Two sided wall), Grid Interface CFD XUE FLUENT 0 July 8, 2010 06:49
Boundary condition in pressure equation Paolo Lampitella FLUENT 0 February 21, 2008 06:30
Question about pressure inlet boundary condition. Alina FLUENT 1 November 30, 2007 07:39


All times are GMT -4. The time now is 17:57.