Three-dimensional geometry of the narwhal (Monodon monoceros) flukes in relation to hydrodynamics
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Title | Three-dimensional geometry of the narwhal (Monodon monoceros) flukes in relation to hydrodynamics |
Publication Type | Journal Article |
Year of Publication | 2011 |
Authors | Fontella, J. E., F. E. Fish, N. Rybczynski, M. T. Nweeia, and D. R. Ketten |
Journal | Marine Mammal Science |
Volume | 27 |
Start Page | 889 |
Issue | 4 |
Pagination | 889-898 |
Date Published | 10/2011 |
Type of Article | Scientific |
Keywords | cetacean fluke, ct, hydrodynamics, medical imaging, monodon monoceros, narwahl ct scan, narwhal catscan, narwhal fluke, three-dimensional geometry, underwater locomotion, underwtaer propulsion |
Abstract | Cetaceans (whales, porpoises, and dolphins) use only their flukes for propulsion. Flukes are distally located extensions of the tail, and from a biomechanical standpoint, function as a pair of wings (Vogel 1994). Flukes function to produce thrust generated as an anteriorly directed lift force as flukes oscillate vertically (Fish 1998a, b). Their cross-sections resemble hydrofoils. For a hydrofoil to be effective, a large lift must be produced while drag is minimized; this, in turn, increases the thrust generated |
DOI | 10.1111/j.1748-7692.2010.00439.x |
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