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. doi:10.1016/0167-2789(89)90010-9. https://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 | |||||||||
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| 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 | |||||||||
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| Issue or Number: | 2-3 | |||||||||
| DOI: | 10.1016/0167-2789(89)90010-9 | |||||||||
| Record Number: | CaltechAUTHORS:20130918-154846323 | |||||||||
| Persistent URL: | https://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: | 10 Nov 2021 04:29 |
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