Van Atta, C. W. and Gharib, M. and Hammache, M. (1988) Three-dimensional structure of ordered and chaotic vortex streets behind circular cylinders at low Reynolds numbers. Fluid Dynamics Research, 3 (1-4). pp. 127-132. ISSN 1873-7005. http://resolver.caltech.edu/CaltechAUTHORS:20131024-085544182
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Abstract
We have investigated the spatial and temporal structure of certain cases of chaotic and organized vortex shedding in self-excited cylinder wakes at low Reynolds number (40–200) by extending hot-wire measurements to much larger downstream locations than our earlier measurements (Van Atta and Gharib, 1987) and performing concurrent smoke-wire flow visualizations. We describe here results for two cases in which chaotic vortex shedding is observed. The first is the single-vibration frequency locked-in case, in which the most highly disturbed regions of the vortex street, which produce chaotic spectra, are confined to compact spanwise-periodic propagating disturbed regions. The second is the multiple-vibration frequency case in which chaotic velocity spectra are observed at all spanwise locations.
| Item Type: | Article | ||||||
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| Additional Information: | © 1988 Published by Elsevier B.V. This work was supported by ACMP/DARPA, under the University Research Initiative “Program on Research and Education in Chaotic and Turbulent Fluid Dynamics”, in the DARPA Applied and Computational Mathematics Program, Grant # N00014-86-K-0758. | ||||||
| Group: | GALCIT | ||||||
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| Record Number: | CaltechAUTHORS:20131024-085544182 | ||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20131024-085544182 | ||||||
| Official Citation: | C.W. Van Atta, M. Gharib, M. Hammache, Three-dimensional structure of ordered and chaotic vortex streets behind circular cylinders at low Reynolds numbers, Fluid Dynamics Research, Volume 3, Issues 1–4, 1 September 1988, Pages 127-132, ISSN 0169-5983, http://dx.doi.org/10.1016/0169-5983(88)90055-X. (http://www.sciencedirect.com/science/article/pii/016959838890055X) | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 42033 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Tony Diaz | ||||||
| Deposited On: | 24 Oct 2013 22:22 | ||||||
| Last Modified: | 30 Sep 2016 17:35 |
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