Control of Asymmetric Jet
Final technical rept. 1 May 1990-30 Apr 1992
UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF AEROSPACE ENGINEERING
Pagination or Media Count:
A passive method of enhancing the rate of entrainment by as much as 500 in subsonic open nozzle flows has been obtained by modifying axisymmetric nozzle geometry to a 21 aspect-ratio elliptic nozzle. Small aspect-ratio elliptical nozzles have been demonstrated to more efficiently control mixing processes and to exhibit increased rates of spreading, entrainment and fine- scale mixing than axisymmetric nozzles at subsonic and supersonic conditions in a confined dump combustor and in high-temperature ramjets. Vortex self-induction is the principle mechanism controlling mixing processes in asymmetric jet nozzles.
- Fluid Mechanics