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Bispectral analysis of ordered and chaotic vortex shedding from vibrating cylinders at low Reynolds numbers

Elgar, Steve and Van Atta, C. W. and Gharib, M. (1989) Bispectral analysis of ordered and chaotic vortex shedding from vibrating cylinders at low Reynolds numbers. Physica D, 39 (2-3). pp. 281-286. ISSN 0167-2789. http://resolver.caltech.edu/CaltechAUTHORS:20130918-154846323

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Abstract

Bispectral analysis is used to compare and contrast ordered and chaotic vortex shedding from a cylinder in low-Reynolds-number flow. Auto-bicoherence spectra of the wake velocity field for ordered shedding are characterized by sharp peaks, indicating coupling between fluid motions at the vortex shedding frequency, its side bands, and its harmonics. Wake velocities for chaotic shedding have broad power spectral peaks and substantial low-frequency energy. The corresponding auto-bicoherences show coupling between motions with a relatively wide range of frequencies, especially low frequencies.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0167-2789(89)90010-9DOIArticle
http://www.sciencedirect.com/science/article/pii/0167278989900109PublisherArticle
Additional Information:© 1989 Elsevier Science Publishers B.V. Received 1 April 1988; Accepted 3 June 1989; Communicated by A.C. Newell. Support was provided by the Office of Naval Research Grant N00014-86-K-0877 (S.E.) and by the National Science Foundation Grant OCE85-11290 and the Defense Advanced Research Projects Agency University Research Initiative Program (C.V.A. and M.G.). Computations were performed on the CRAY XMP at the San Diego Supercomputer Center (supported by NSF) through an allocation provided by Center.
Group:GALCIT
Funders:
Funding AgencyGrant Number
Office of Naval Research (ONR)N00014-86-K-0877
NSFOCE85-11290
Defense Advanced Research Projects Agency (DARPA) University Research Initiative ProgramUNSPECIFIED
Record Number:CaltechAUTHORS:20130918-154846323
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130918-154846323
Official Citation:Steve Elgar, C.W. van Atta, M. Gharib, Bispectral analysis of ordered and chaotic vortex shedding from vibrating cylinders at low Reynolds numbers, Physica D: Nonlinear Phenomena, Volume 39, Issues 2–3, 2 October 1989, Pages 281-286, ISSN 0167-2789, http://dx.doi.org/10.1016/0167-2789(89)90010-9. (http://www.sciencedirect.com/science/article/pii/0167278989900109)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41404
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:18 Sep 2013 23:09
Last Modified:30 Sep 2016 17:35

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