NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The three-dimensional evolution of a plane mixing layer - Pairing and transition to turbulenceThe evolution of three-dimensional temporally evolving plane mixing layers through as many as three pairings has been simulated numerically. All simulations were begun from a few low-wavenumber disturbances, usually derived from linear stability theory, in addition to the mean velocity. Three-dimensional perturbations were used with amplitudes ranging from infinitesimal to large enough to trigger a rapid transition to turbulence. Pairing is found to inhibit the growth of infinitesimal three-dimensional disturbances, and to trigger the transition to turbulence in highly three-dimensional flows. The mechanisms responsible for the growth of three-dimensionality and onset of transition to turbulence are described. The transition to turbulence is accompanied by the formation of thin sheets of spanwise vorticity, which undergo secondary rollups. The post-transitional simulated flow fields exhibit many properties characteristic of turbulent flows.
Document ID
19930047801
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Moser, Robert D.
(NASA Ames Research Center Moffett Field, CA, United States)
Rogers, Michael M.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 16, 2013
Publication Date
February 1, 1993
Publication Information
Publication: Journal of Fluid Mechanics
ISSN: 0022-1120
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
93A31798
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available