{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T02:37:26Z","timestamp":1791427046059,"version":"4.3.3"},"reference-count":95,"publisher":"The Company of Biologists","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2014,1,15]]},"abstract":"<jats:p>Attempts to measure the propulsive forces produced by swimming dolphins have been limited. Previous uses of computational hydrodynamic models and gliding experiments have provided estimates of thrust production by dolphins, but these were indirect tests that relied on various assumptions. The thrust produced by two actively swimming bottlenose dolphins (Tursiops truncatus) was directly measured using digital particle image velocimetry (DPIV). For dolphins swimming in a large outdoor pool, the DPIV method used illuminated microbubbles that were generated in a narrow sheet from a finely porous hose and a compressed air source. The movement of the bubbles was tracked with a high-speed video camera. Dolphins swam at speeds of 0.7 to 3.4 m s\u22121 within the bubble sheet oriented along the midsagittal plane of the animal. The wake of the dolphin was visualized as the microbubbles were displaced because of the action of the propulsive flukes and jet flow. The oscillations of the dolphin flukes were shown to generate strong vortices in the wake. Thrust production was measured from the vortex strength through the Kutta\u2013Joukowski theorem of aerodynamics. The dolphins generated up to 700 N during small amplitude swimming and up to 1468 N during large amplitude starts. The results of this study demonstrated that bubble DPIV can be used effectively to measure the thrust produced by large-bodied dolphins.<\/jats:p>","DOI":"10.1242\/jeb.087924","type":"journal-article","created":{"date-parts":[[2014,1,15]],"date-time":"2014-01-15T22:30:47Z","timestamp":1389825047000},"page":"252-260","source":"Crossref","is-referenced-by-count":110,"title":["Measurement of hydrodynamic force generation by swimming dolphins using bubble DPIV"],"prefix":"10.1242","volume":"217","author":[{"given":"Frank E.","family":"Fish","sequence":"first","affiliation":[{"name":"Department of Biology, West Chester University, West Chester, PA 19383, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul","family":"Legac","sequence":"additional","affiliation":[{"name":"Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Terrie M.","family":"Williams","sequence":"additional","affiliation":[{"name":"Center for Ocean Health, Long Marine Laboratory, University of California, Santa Cruz, Santa Cruz, CA 95060, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timothy","family":"Wei","sequence":"additional","affiliation":[{"name":"College of Engineering, University of Nebraska, Lincoln, NE 68588, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"237","reference":[{"key":"2021042507540086800_R1","volume-title":"Theory of Wing Sections","author":"Abbott","year":"1959"},{"key":"2021042507540086800_R2","doi-asserted-by":"crossref","first-page":"1690","DOI":"10.1364\/AO.23.001690","article-title":"Scattering particle characteristics and their effect on pulsed laser measurements of fluid flow: speckle velocimetry vs particle image velocimetry","volume":"23","author":"Adrian","year":"1984","journal-title":"Appl. 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