Gliding locomotion of manta rays, killer whales and swordfish near the water surface

Abstract The hydrodynamic performance of the locomotive near the water surface is impacted by its geometrical shape. For marine animals, their geometrical shape is naturally selective; thus, investigating gliding locomotion of marine animal under the water surface may be able to elucidate the influe...

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Autores principales:	Jie-Min Zhan, Ye-Jun Gong, Tian-Zeng Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0607b496c72541ff90e8c1148b2e5955
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id	oai:doaj.org-article:0607b496c72541ff90e8c1148b2e5955
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spelling	oai:doaj.org-article:0607b496c72541ff90e8c1148b2e59552021-12-02T12:32:19ZGliding locomotion of manta rays, killer whales and swordfish near the water surface10.1038/s41598-017-00399-y2045-2322https://doaj.org/article/0607b496c72541ff90e8c1148b2e59552017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00399-yhttps://doaj.org/toc/2045-2322Abstract The hydrodynamic performance of the locomotive near the water surface is impacted by its geometrical shape. For marine animals, their geometrical shape is naturally selective; thus, investigating gliding locomotion of marine animal under the water surface may be able to elucidate the influence of the geometrical shape. We investigate three marine animals with specific geometries: the killer whale is fusiform shaped; the manta ray is flat and broad-winged; and the swordfish is best streamlined. The numerical results are validated by the measured drag coefficients of the manta ray model in a towing tank. The friction drag of the three target models are very similar; the body shape affected form drag coefficient is order as swordfish < killer whale < manta ray; the induced wave breaking upon the body of the manta ray performs different to killer whale and swordfish. These bio-inspired observations provide a new and in-depth understanding of the shape effects on the hydrodynamic performances near the free surface.Jie-Min ZhanYe-Jun GongTian-Zeng LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jie-Min Zhan Ye-Jun Gong Tian-Zeng Li Gliding locomotion of manta rays, killer whales and swordfish near the water surface
description	Abstract The hydrodynamic performance of the locomotive near the water surface is impacted by its geometrical shape. For marine animals, their geometrical shape is naturally selective; thus, investigating gliding locomotion of marine animal under the water surface may be able to elucidate the influence of the geometrical shape. We investigate three marine animals with specific geometries: the killer whale is fusiform shaped; the manta ray is flat and broad-winged; and the swordfish is best streamlined. The numerical results are validated by the measured drag coefficients of the manta ray model in a towing tank. The friction drag of the three target models are very similar; the body shape affected form drag coefficient is order as swordfish < killer whale < manta ray; the induced wave breaking upon the body of the manta ray performs different to killer whale and swordfish. These bio-inspired observations provide a new and in-depth understanding of the shape effects on the hydrodynamic performances near the free surface.
format	article
author	Jie-Min Zhan Ye-Jun Gong Tian-Zeng Li
author_facet	Jie-Min Zhan Ye-Jun Gong Tian-Zeng Li
author_sort	Jie-Min Zhan
title	Gliding locomotion of manta rays, killer whales and swordfish near the water surface
title_short	Gliding locomotion of manta rays, killer whales and swordfish near the water surface
title_full	Gliding locomotion of manta rays, killer whales and swordfish near the water surface
title_fullStr	Gliding locomotion of manta rays, killer whales and swordfish near the water surface
title_full_unstemmed	Gliding locomotion of manta rays, killer whales and swordfish near the water surface
title_sort	gliding locomotion of manta rays, killer whales and swordfish near the water surface
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/0607b496c72541ff90e8c1148b2e5955
work_keys_str_mv	AT jieminzhan glidinglocomotionofmantarayskillerwhalesandswordfishnearthewatersurface AT yejungong glidinglocomotionofmantarayskillerwhalesandswordfishnearthewatersurface AT tianzengli glidinglocomotionofmantarayskillerwhalesandswordfishnearthewatersurface
_version_	1718394077304586240

Gliding locomotion of manta rays, killer whales and swordfish near the water surface

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