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Experimental study of the separation and reattachment in a partially confined jet


Kosmicki, James J. (1973) Experimental study of the separation and reattachment in a partially confined jet. Engineer's thesis, California Institute of Technology. doi:10.7907/14DA-WA82.


By use of various lengths of shroud an experimental study was made of a partially confined jet to examine the transition between the flow configuration for a free jet to that of a confined jet. An examination of the reattachment pressure distributions and the parameters at the entrance of the abrupt channel expansion was made. A smooth transition of mean flow quantities was found to occur in the transition from a free jet to a partially confined jet and then to a fully confined jet. The distance to reattachment was measured for various shroud lengths and shown to exhibit an asymptotic value which was Reynolds number dependent. Associated with this maximum reattachment length was a maximum pressure recovery factor. The range of Reynolds numbers - based upon the jet diameter - for the present study was 80,000 to 280,000.

Item Type:Thesis (Engineer's thesis)
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Roshko, Anatol
Thesis Committee:
  • Unknown, Unknown
Defense Date:23 March 1973
Record Number:CaltechETD:etd-12212005-133626
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5098
Deposited By: Imported from ETD-db
Deposited On:22 Dec 2005
Last Modified:21 Dec 2019 04:42

Thesis Files

PDF (Kosmicki_jj_1973.pdf) - Final Version
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