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Transition to chaos in an open unforced 2D flowThe present numerical study of unsteady, low Reynolds number flow past a 2D airfoil attempts to ascertain the bifurcation sequence leading from simple periodic to complex aperiodic flow with rising Reynolds number, as well as to characterize the degree of chaos present in the aperiodic flow and assess the role of numerics in the modification and control of the observed bifurcation scenario. The ARC2D Navier-Stokes code is used in an unsteady time-accurate mode for most of these computations. The system undergoes a period-doubling bifurcation to chaos as the Reynolds number is increased from 800 to 1600; its chaotic attractors are characterized by estimates of the fractal dimension and partial Liapunov exponent spectra.
Document ID
19930048626
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Pulliam, Thomas H.
(NASA Ames Research Center Moffett Field, CA, United States)
Vastano, John A.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 16, 2013
Publication Date
March 1, 1993
Publication Information
Publication: Journal of Computational Physics
Volume: 105
Issue: 1
ISSN: 0021-9991
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
93A32623
Distribution Limits
Public
Copyright
Other

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