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An inertial mechanism behind dynamic station holding by fish swinging in a vortex street
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Harvey, Sam Tucker, Muhawenimana, Valentine, Müller, Stephanie, Wilson, Catherine A. M. E. and Denissenko, Petr (2022) An inertial mechanism behind dynamic station holding by fish swinging in a vortex street. Scientific Reports, 12 (1). 12660. doi:10.1038/s41598-022-16181-8 ISSN 2045-2322.
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WRAP-An-inertial-mechanism-dynamic-station-fish-swinging-vortex-street-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1360Kb) | Preview |
Official URL: https://doi.org/10.1038/s41598-022-16181-8
Abstract
Many aquatic and aerial animal species are known to utilise their surrounding flow field and/or the induced flow field of a neighbour to reduce their physical exertion, however, the mechanism by which such benefits are obtained has remained elusive. In this work, we investigate the swimming dynamics of rainbow trout in the wake of a thrust-producing oscillating hydrofoil. Despite the higher flow velocities in the inner region of the vortex street, some fish maintain position in this region, while exhibiting an altered swimming gait. Estimates of energy expenditure indicate a reduction in the propulsive cost when compared to regular swimming. By examining the accelerations of the fish, an explanation of the mechanism by which energy is harvested from the vortices is proposed. Similar to dynamic soaring employed by albatross, the mechanism can be linked to the non-equilibrium hydrodynamic forces produced when fish encounter the cross-flow velocity generated by the vortex street.
| Item Type: | Journal Article | ||||||
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| Subjects: | Q Science > QH Natural history > QH301 Biology Q Science > QL Zoology |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||
| SWORD Depositor: | Library Publications Router | ||||||
| Library of Congress Subject Headings (LCSH): | Bioenergetics, Ichthyology , Fluid dynamics | ||||||
| Journal or Publication Title: | Scientific Reports | ||||||
| Publisher: | Nature Publishing Group UK | ||||||
| ISSN: | 2045-2322 | ||||||
| Official Date: | 25 July 2022 | ||||||
| Dates: |
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| Volume: | 12 | ||||||
| Number: | 1 | ||||||
| Article Number: | 12660 | ||||||
| DOI: | 10.1038/s41598-022-16181-8 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Reuse Statement (publisher, data, author rights): | ** From Springer Nature via Jisc Publications Router ** History: received 24-04-2022; registration 06-07-2022; accepted 06-07-2022; pub-electronic 25-07-2022; online 25-07-2022; collection 12-2022. ** Licence for this article: http://creativecommons.org/licenses/by/4.0/ | ||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||
| Date of first compliant deposit: | 2 August 2022 | ||||||
| Date of first compliant Open Access: | 2 August 2022 | ||||||
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