Accession Number:

AD0785256

Title:

Investigation of Viscous Line Vortices With and Without the Injection of Core Turbulence.

Descriptive Note:

Final rept.,

Corporate Author:

ROCHESTER APPLIED SCIENCE ASSOCIATES INC N Y

Report Date:

1974-02-01

Pagination or Media Count:

159.0

Abstract:

An experimental research program was conducted to investigate the general characteristics of a line vortex trailed from a three-dimensional lifting surface, and to determine how its general velocity distribution, turbulence level, turbulent frequency content, and dissipation rates are affected by the injection of a jet of turbulent air and by a fixed turbulence generator. Three component hot-wire surveys indicated that injection of the vortex core reduced the peak tangential velocity, established a strong axial flow component, increased the core diameter, altered the turbulence spectrum, and enhanced the turbulence level in the viscous core. Modified author abstract

Subject Categories:

  • Aerodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE