Study of the origin of three dimensional structures and chaos in an externally forced free shear layer
- Creators
- Williams-Stuber, K.
-
Gharib, M.
Abstract
Experiments on an externally forced free shear layer are performed which study the origin of three-dimensional structures and chaos in shear flows. Transition routes between the laminar two-dimensional stages of shear flows and their final complex three-dimensional stages are examined. Two avenues of investigation are pursued. First, the general idea of a multi-frequency route to chaos is examined which treats the shear flow as an open dynamical system. An attempt is made to apply concepts from nonlinear dynamics to these systems. Secondly, a new approach to generating three-dimensional structures in shear flows which involves the creation of a spatial shear in the frequency of external perturbations is presented. In these experiments, a variety of vortex reconnection behaviors is observed at the discontinuity.
Additional Information
© 1989 by K. Williams-Stuber and M. Gharib. Published by the American Institute of Aeronautics and Astronautics, Inc. with permission. The work presented here was sponsored by AFOSR under contract number AFOSR-87-0330.Attached Files
Published - Gharib_1989p89-1021.pdf
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Additional details
- Eprint ID
- 41438
- Resolver ID
- CaltechAUTHORS:20130920-095600412
- Air Force Office of Scientific Research (AFOSR)
- AFOSR-87-0330
- Created
-
2013-09-20Created from EPrint's datestamp field
- Updated
-
2023-03-14Created from EPrint's last_modified field
- Caltech groups
- GALCIT
- Series Name
- AIAA Papers
- Series Volume or Issue Number
- 89-1021