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Numerical simulation of excited jet mixing layersA numerical simulation of unsteady flow in jet mixing layers, both with and without external excitation, has been performed by solving the time-dependent compressible Navier-Stokes equations. Computations were performed on a CRAY X-MP computer using MacCormick's explicit finite difference algorithm. Different excitation methods were investigated and were shown to be very effective in controlling the well organized periodic production, shedding and pairing of large scale vortex structures. It is found that pressure excitation was generally more effective than temperature excitation, and that grid refinement results in substantial improvement in the resolution of unsteady features. The location and orientation, in addition to the frequency, of the excitation source are shown to have a significant influence on the production and interaction of large scale vortex structures in the jet mixing layer.
Document ID
19870035087
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Scott, J. N.
(Dayton Univ. OH, United States)
Hankey, W. L.
(Dayton, University OH, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 87-0016
Accession Number
87A22361
Funding Number(s)
CONTRACT_GRANT: NAG3-526
Distribution Limits
Public
Copyright
Other

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