Accession Number:

ADA011584

Title:

Intermittency, The Entrainment Problem.

Descriptive Note:

Technical interim rept. Jun 71-Jun 73,

Corporate Author:

AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1975-03-01

Pagination or Media Count:

104.0

Abstract:

The mechanism of entrainment in turbulent wake flows has been analytically and experimentally examined. It is argued that the development of the wake is dominated by the vortices shed from the recirculation region. These vortices cause the rapid diffusion of the mean flow and are responsible for the appearance of waves on the turbulent interface. An explanation for the persistence of the vortices is found in terms of a strain energy stored in the anisotropy of the vortices on the mean flow is described by relating the size and strength of the vortices to an additional eddy viscosity.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE