Accession Number:

ADA001021

Title:

Self-Excited Superturbulence: The Whistler Nozzle

Descriptive Note:

Research rept.

Corporate Author:

GRUMMAN AEROSPACE CORP BETHPAGE NY RESEARCH DEPT

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.

Subject Categories:

  • Fluid Mechanics
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE