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

Identify Reversed Flow Region on OUTLET

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 2, 2014, 04:20
Default Identify Reversed Flow Region on OUTLET
  #1
New Member
 
Edoardo
Join Date: Feb 2014
Posts: 13
Rep Power: 4
gigiboumba is on a distinguished road
Dear all,

I am running simulations of a wind turbine: I have the turbine in the centre of a spherical domain with diameter 7 times the turbine rotor diamater.
I specify inlet and outlet boudaries at the two hemispheres, with a sheared velocity profile at the inlet.

When I run the simulations I get the error that there is reversed flow at the outlet where walls are placed and CFX suggests to switch to a opening boundaries; however the solution is converging.

I was wondering is there is a way to identify where the walls have been placed by CFX to see if this is affecting the flowfield. Would the opening boundary be a better option?

Thank you very much!
gigiboumba is offline   Reply With Quote

Old   June 2, 2014, 06:26
Default
  #2
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 13,059
Rep Power: 101
ghorrocks is a jewel in the roughghorrocks is a jewel in the roughghorrocks is a jewel in the rough
Load the results file in CFD-Post and see what regions of the outlet have zero velocity.
ghorrocks is offline   Reply With Quote

Old   June 2, 2014, 07:49
Default
  #3
New Member
 
Edoardo
Join Date: Feb 2014
Posts: 13
Rep Power: 4
gigiboumba is on a distinguished road
Thanks a lot!
gigiboumba is offline   Reply With Quote

Reply

Tags
opening boundary, outlet boundary condition, reversed flow

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
Reversed flow at outlet in micro channel Agad15 FLUENT 0 January 24, 2014 05:54
Reversed Flow in Outlet Steve FLUENT 18 March 30, 2013 08:50
Review: Reversed flow CRT FLUENT 0 July 20, 2012 13:03
Disturbed flow field at outlet boundary (Multiphase flow through pipe) Michiel CFX 17 April 21, 2010 10:14
VOF Outlet boundary condition in cfd - ace JM Main CFD Forum 0 December 15, 2006 09:07


All times are GMT -4. The time now is 02:36.