Knifefish’s suction makes water boil

Victor M. Ortega-Jimenez,Christopher P. J. Sanford

SCIENTIFIC REPORTS（2020）

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摘要

We discovered that knifefish ( Apteronotus albifrons ) during suction feeding can produce millimeter-sized cavitation bubbles and flow accelerations up to ~ 450 times the acceleration of gravity. Knifefish may use this powerful suction-induced cavitation to cause physical damage on prey hiding in narrow refuges, therefore facilitating capture.

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Biomechanics,Fluid dynamics,Science,Humanities and Social Sciences,multidisciplinary

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