Hydrodynamics of vortex generation during bell contraction by the hydromedusa Eutonina indicans (Romanes, 1876).
Costello, John H.
Colin, Sean P.
Gemmell, Brad J.
Dabiri, John O.
MetadataShow full item record
Swimming bell kinematics and hydrodynamic wake structures were documented during multiple pulsation cycles of a Eutonina indicans (Romanes, 1876) medusa swimming in a predominantly linear path. Bell contractions produced pairs of vortex rings with opposite rotational sense. Analyses of the momentum flux in these wake structures demonstrated that vortex dynamics related directly to variations in the medusa swimming speed. Furthermore, a bulk of the momentum flux in the wake was concentrated spatially at the interfaces between oppositely rotating vortices rings. Similar thrust-producing wake structures have been described in models of fish swimming, which posit vortex rings as vehicles for energy transport from locations of body bending to regions where interacting pairs of opposite-sign vortex rings accelerate the flow into linear propulsive jets. These findings support efforts toward soft robotic biomimetic propulsion
© The Author(s), 2019. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Costello, J. H., Colin, S. P., Gemmell, B. J., & Dabiri, J. O. Hydrodynamics of vortex generation during bell contraction by the hydromedusa Eutonina indicans (Romanes, 1876). Biomimetics, 4(3), (2019): 44, doi:10.3390/biomimetics4030044.
Suggested CitationCostello, J. H., Colin, S. P., Gemmell, B. J., & Dabiri, J. O. (2019). Hydrodynamics of vortex generation during bell contraction by the hydromedusa Eutonina indicans (Romanes, 1876). Biomimetics, 4(3), 44.
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Wardle, Richard M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-02)This thesis addresses the parameterization of the heat and momentum transporting properties of eddy motions for use in three-dimensional, primitive equation, z-coordinate atmosphere and ocean models. Determining the ...
Flierl, Glenn R.; Ingersoll, Andrew P.; Yano, Jun-Ichi; Ewing-DeRemer, Barbara (Woods Hole Oceanographic Institution, 1992)The topic this summer was "The Dynamics of the Outer Planets." Andrew Ingersoll gave an excellent review of the current understanding of the strcture of the atmospheres of Jupiter, Neptune, Saturn, and Uranus. He presented ...
Avsec, Dusan (E. Blondel la Rougery : Gauthier-VillarsWoods Hole Oceanographic Institution, 1939)The object of the present work is a study thermoconvective eddies in a layer of air heated uniformly from below. Being given the importance that these eddies present in meteorlogical phenomena, we have tried to attain three ...