Accession Number:
ADA001021
Title:
Self-Excited Superturbulence: The Whistler Nozzle
Descriptive Note:
Research rept.
Corporate Author:
GRUMMAN AEROSPACE CORP BETHPAGE NY RESEARCH DEPT
Personal Author(s):
Report Date:
1974-10-01
Pagination or Media Count:
44.0
Abstract:
The whistler nozzle, consists of a convergent nozzle section, a constant area section, and a step change to an exit section with a larger constant area. The exit section excites a standing acoustic wave in the constant area section, in a way similar to the action of an organ pipe. The result of this resonance is a loud pure tone and a greatly increased rate of jet mixing. The report contains detailed experimental results for the configurations tested. It includes a discussion of several possible applications and suggestions for future experiments aimed at increasing our understanding and improving the performance of the whistler nozzle. Also included is a discussion of the relationship between the vortex nature of subsonic turbulent mixing layers and the differences in turbulent mixing rates for subsonic and supersonic flows.
Descriptors:
Subject Categories:
- Fluid Mechanics
- Jet and Gas Turbine Engines