Dynamics of Vortices and Shock Waves in Nonuniform Media.

Abstract

A research program to study the dynamics of high-energy vortex rings with very thin rotational cores has been continued. The rings are generated by shock-tube and pulse techniques. A series of experiments has been conducted to determine the effect of the length of the driver section of the shock-tube vortex generator on the properties and behavior of vortex rings. (Varying the length of the shock-tube driver is the same thing as varying the piston stroke of more conventional vortex ring generators.) The use of ultra-short drivers has been attempted and preliminary results obtained. A retraction mechanism to rapidly retract the mouth of the tube away from the vortex shortly after it is produced, to aid in the development of vortices generated by the ultra-short drivers, has been tested. With this device the velocity (strength) of vortices produced with several different driver lengths (but not yet the ultra-short drivers) has been measured. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1979
Accession Number
ADA072842

Entities

People

  • B. Sturtevant

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Aeronautics
  • Dynamics
  • Energy
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Generators
  • High Energy
  • Schematic Diagrams
  • Shock Tubes
  • Shock Waves
  • Turbulent Mixing
  • Vortex Generators
  • Vortices
  • Waves

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Optical Physics and Photonics.