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

KH instability

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 9, 2006, 19:30
Default KH instability
  #1
kumar
Guest
 
Posts: n/a
Hello Sirs

I was trying to understand the mechanism of classical Kelvin-Helmholtz instability, it is easy to visualize the classical example - wind over calm water.

I understand the mechanism in this situation - lower pressures above the crest of the wave due to the curvature effect amplifying the ripple. In this case wave breaking and droplet generation occurs when the critical wind velocity is about 6.5 m/s.

I have a question regarding the OPPOSITE SITUATION - a fast flowing water stream in a stagnant atmosphere. In this case, will it need a stream velocity of 6.5 for the wave breaking etc. to happen?

I would be greatful if some one can help me understand this, thanks so much

Kumar
  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
Low Reynolds Number Instability in icoFoam - Cavity Case kmooney OpenFOAM Running, Solving & CFD 2 October 8, 2009 14:09
instability in fluent marangoni FLUENT 2 March 5, 2004 00:30
Instability at the onset of natural convection Magherbi Main CFD Forum 0 October 23, 2002 09:53
Instability of convection Zeng Main CFD Forum 0 May 26, 2000 05:39
secondary instability?? Anan Main CFD Forum 2 April 6, 2000 09:48


All times are GMT -4. The time now is 19:52.