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Renewable fluid dynamic energy derived from aquatic animal locomotion

Dabiri, John O. (2007) Renewable fluid dynamic energy derived from aquatic animal locomotion. Bioinspiration and Biomimetics, 2 (3). L1-L3. ISSN 1748-3182. doi:10.1088/1748-3182/2/3/L01.

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Aquatic animals swimming in isolation and in groups are known to extract energy from the vortices in environmental flows, significantly reducing muscle activity required for locomotion. A model for the vortex dynamics associated with this phenomenon is developed, showing that the energy extraction mechanism can be described by simple criteria governing the kinematics of the vortices relative to the body in the flow. In this way, we need not make direct appeal to the fluid dynamics, which can be more difficult to evaluate than the kinematics. Examples of these principles as exhibited in swimming fish and existing energy conversion devices are described. A benefit of the developed framework is that the potentially infinite-dimensional parameter space of the fluid–structure interaction is reduced to a maximum of eight combinations of three parameters. The model may potentially aid in the design and evaluation of unsteady aero- and hydrodynamic energy conversion systems that surpass the Betz efficiency limit of steady fluid dynamic energy conversion systems.

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Dabiri, John O.0000-0002-6722-9008
Additional Information:© Institute of Physics and IOP Publishing Limited 2007. Received 16 January 2007, accepted for publication 15 August 2007. Published 10 September 2007. Print publication: Issue 3 (September 2007)
Issue or Number:3
Record Number:CaltechAUTHORS:DABbb07
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8712
Deposited By: Archive Administrator
Deposited On:10 Sep 2007
Last Modified:12 Jul 2022 19:45

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