CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

why velocity keeps rising??

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

LinkBack Thread Tools Display Modes
Old   July 1, 2008, 13:50
Default why velocity keeps rising??
Posts: n/a

I am running LES simulation with periodic boundaries. I am monitoring velocity at a point in my domain. I observe steady increase in my velocity. Why is that?? Any input will be welcome.

Thank you
  Reply With Quote

Old   July 3, 2008, 18:57
Default Re: why velocity keeps rising??
Posts: n/a
If your scheme is not energy conserving, instabilities could cause one component say u-velocity to rise and then to satisfy divergence the other two components also increase. And the downhill begins.

You can look up papers on "energy conserving schemes" for more information.
  Reply With Quote


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
UDF error - parabolic velocity profile - 3D turbine Zaqie Fluent UDF and Scheme Programming 9 June 25, 2016 19:08
how to compute relative velocity from absolute? spk Main CFD Forum 3 July 9, 2010 08:42
why velocity keeps rising?? arkuk FLUENT 0 July 1, 2008 13:50
Neumann pressure BC and velocity field Antech Main CFD Forum 0 April 25, 2006 02:15
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11

All times are GMT -4. The time now is 04:05.