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Vortex breakdown in a supersonic jetThis paper reports a study of a vortex breakdown in a supersonic jet. A supersonic vortical jets were created by tangential injection and acceleration through a convergent-divergent nozzle. Vortex circulation was varied, and the nature of the flow in vortical jets was investigated using several types of flow visualization, including focusing schlieren and imaging of Rayleigh scattering from a laser light sheet. Results show that the vortical jet mixed much more rapidly with the ambient air than a comparable straight jet. When overexpanded, the vortical jet exhibited considerable unsteadiness and showed signs of vortex breakdown.
Document ID
19910059033
Document Type
Conference Paper
Authors
Cutler, Andrew D. (NASA Langley Research Center Hampton, VA, United States)
Levey, Brian S. (NASA Langley Research Center; George Washington University Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
June 1, 1991
Subject Category
AERODYNAMICS
Report/Patent Number
AIAA PAPER 91-1815
Funding Number(s)
CONTRACT_GRANT: NAS1-18458
CONTRACT_GRANT: NCC1-24
Distribution Limits
Public
Copyright
Other