Accession Number:

ADA167868

Title:

The Structure of the Turbulent Mixing Layer,

Descriptive Note:

Corporate Author:

UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF AEROSPACE ENGINEERING

Personal Author(s):

Report Date:

1986-01-01

Pagination or Media Count:

14.0

Abstract:

Recent experimental results describing the vortical structure of the mixing layer are reviewed. The largest turbulent features are quasi two- dimensional vortices aligned along the span of the flow. As a result of interactions, the vortices rapidly develop an invariant space-time geometry. Superimposed on this vortex structure are smaller scales which include longitudinal vortices of size comparable to the Taylor microscale, and smaller scales which considerably enhance molecular mixing. These smaller scales coexist with the quasi two dimensional structure. At present, no theoretical framework is available to describe the geometrical features of these complex shear flows. Reprints

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE