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

Reverse Flow at Rotating Pipe Outlet

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 7, 2009, 01:51
Default Reverse Flow at Rotating Pipe Outlet
  #1
New Member
 
vismech
Join Date: Mar 2009
Posts: 5
Rep Power: 8
vismech is on a distinguished road
Consider the case of a rotating pipe (rotating about its axis) and having axial inlet at one end, axial outlet at other end. There is one perpendicular pipe also attached to this main pipe which is having one outlet at other end. Pressure Outlet B.C. is given at both outlets.
Due to rotation and centrifugal effects, reverse flow happens at both of the outlets. To avoid reverse flow i can't extend the pipes (perpendicular pipe specially) because then it would affect the actual flow physics due to increased centrifugal effects in the extended pipes.

1. How reverse flow can be avoided in these kind of cases.
2. Due to reverse flow, i m not getting an unique solution and calculated
parameters are varying. Will it be correct to take the mean of the
variation range as the solution?

Thanks in Advance
vismech is offline   Reply With Quote

Old   August 11, 2009, 10:38
Default
  #2
Senior Member
 
Join Date: Mar 2009
Posts: 203
Rep Power: 9
Maddin is on a distinguished road
Can't you make an extrusion on the outlets?
Maddin is offline   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
Reversed Flow in Outlet Steve FLUENT 18 March 30, 2013 08:50
LES of highly heated pipe flow - incorrect results MichalH FLUENT 3 June 3, 2009 05:00
Turbulence in a pipe flow JM Main CFD Forum 4 December 21, 2006 05:04
reverse flow at outlet Neil FLUENT 1 June 22, 2005 00:49
secondary flow in radial rotating pipe arash Main CFD Forum 0 January 20, 2002 14:49


All times are GMT -4. The time now is 07:01.