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

jet preferred mode

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

LinkBack Thread Tools Display Modes
Old   February 4, 2000, 05:13
Default jet preferred mode
Xu Zhou
Posts: n/a
Dear All,

I am confused with the "jet preferred mode instability" and "shear-layer instability". Does the Strouhal number of the shear-layer instbility is dependent on the roll-up of vortex structures with fundermental frequency, while the Strouhal number of the jet preferred mode is decided by the pairing process, which is half of the former one?

Can we obtain the value of the most amplified frequency only with "white noise"?

If the jet is forced at an arbitrary frequency of St=0.4, can we obtain the most amplified frequency St=0.3 at the end of potential core? If so, does it mean the imposed frequency is surpassed?

Best Regards,

xu Zhou
  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
2D Plane Jet Fluent Solution doug Main CFD Forum 10 October 16, 2013 00:47
Jet fan and Tunnel simulation ahlo7 CFX 7 March 7, 2012 10:25
determination of jet front Fred CFX 5 February 11, 2007 12:01
method to determine jet front Fred Main CFD Forum 0 February 8, 2007 13:15
IMPINGING JET ........... HELP!!!!!!!! Amir Omoumi Main CFD Forum 10 August 30, 1999 22:11

All times are GMT -4. The time now is 23:43.