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Keywords: fluid dynamics
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Journal Articles
J Exp Biol (2018) 221 (24): jeb191148.
Published: 12 December 2018
... with their flexible bodies. Medusa Fluid dynamics Wake structure Vorticity Cnidaria Scyphozoa Many free-swimming medusae swim by jet propulsion. Contraction of muscle fibres deforms the mesoglea, compressing the subumbrella cavity and forcing water out of the bell mouth, which transfers momentum...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (1): jeb149583.
Published: 11 January 2018
... Energetics of locomotion Escape manoeuvre Fluid dynamics Muscle development Zebrafish After hatching from the egg, most bony fish continue life as a larva, a few millimetres in length, that needs to survive autonomously. They have to hunt prey to gather resources for their growth and development...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (19): 3411–3418.
Published: 1 October 2017
... by The Company of Biologists Ltd 2017 http://www.biologists.com/user-licence-1-1/ Summary: We present Flowtrace, an algorithm and open-source code that allows simple visualization of characteristic structures (like jets or vortices) that appear in biological systems. Flow field Fluid dynamics...
Journal Articles
J Exp Biol (2015) 218 (17): 2753–2763.
Published: 1 September 2015
... function ε strength of blocking μ fluid dynamic viscosity ρ fluid density ω heart beat frequency The myocardium contracts to reduce the radius of the heart's lumen. This contraction propagates down the length of the heart tube to drive blood flow through the circulatory...
Journal Articles
J Exp Biol (2012) 215 (9): 1456–1463.
Published: 1 May 2012
... to suction feeders. The feeding ecology of goldfish and bluegill differs considerably and this may be partially due to differences in fluid dynamics and kinematics. Bluegill are the most planktivorous of all centrarchid species ( Collar et al., 2009 ), feeding on both midwater cladocerans and benthic...
Journal Articles
J Exp Biol (2011) 214 (7): 1181–1193.
Published: 1 April 2011
... no obvious morphological adaptations to life in lotic habitats. We therefore asked whether small size itself facilitates benthic station holding in these fish. We first used digital particle image velocimetry to quantify the fluid dynamics of flow over a variety of substrates. We then visualized the patterns...
Journal Articles
J Exp Biol (2008) 211 (21): 3359–3369.
Published: 1 November 2008
.... * Author for correspondence (e-mail: tytell@umd.edu ) 1 9 2008 © The Company of Biologists Limited 2008 2008 fluid dynamics escape response C-start turning maneuvering bluegill sunfish Lepomis macrochirus particle image velocimetry The escape response (also called a C...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2008) 211 (16): 2669–2677.
Published: 15 August 2008
.... The upstream fluid structures provide a new focus for fluid dynamic studies of swimming and flying. The upstream structure indicates the portion of fluid that interacts with the animal, thus enabling definition of a mass flow rate induced by locomotion. The new metric for efficiency (η LCS ),which is based...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2008) 211 (2): 280–287.
Published: 15 January 2008
...Jifeng Peng; John O. Dabiri SUMMARY The fluid dynamic analysis of animal wakes is becoming increasingly popular in studies of animal swimming and flying, due in part to the development of quantitative flow visualization techniques such as digital particle imaging velocimetry (DPIV). In most studies...
Journal Articles
J Exp Biol (2007) 210 (11): 1868–1873.
Published: 1 June 2007
... model of the animal–fluid interactions that dictate this trade-off is developed and validated by comparison with morphological data collected from 660 extant medusan species ranging in size from 300 μm to over 2 m. These results demonstrate a biomechanical basis linking fluid dynamics and the evolution...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2007) 210 (4): 685–698.
Published: 15 February 2007
... the wake vortex boundary, according to recently developed fluid dynamics theory. Momentum of the vortex wake and its added-mass were determined and the corresponding instantaneous locomotive forces were quantified at discrete time points during the fin stroke. The instantaneous forces estimated...
Journal Articles
J Exp Biol (2006) 209 (8): 1516–1534.
Published: 15 April 2006
... is the identification of vortices. In fact, the precise definition of a vortex is currently debated in the fluid dynamics community (see, e.g., Haller, 2005 ). The intuitive definition of a vortex as a region with rotating flow, for example, is dependent on the choice of reference frame. The vorticity is also...
Journal Articles
J Exp Biol (2004) 207 (19): 3265–3279.
Published: 1 September 2004
... if the power coefficient remained constant over the speed range examined. e-mail: tytell@oeb.harvard.edu 10 6 2004 © The Company of Biologists Limited 2004 2004 eel Anguilla rostrata wake structure particle image velocimetry fish fluid dynamics efficiency swimming speed...
Journal Articles
J Exp Biol (2004) 207 (11): 1825–1841.
Published: 1 May 2004
...-amplitude elongated body theory and to a previous computational fluid dynamic model and note several discrepancies between the models and the measured values. The wake of steadily swimming eels differs substantially in structure from the wake of previously studied carangiform fishes in that it lacks any...
Journal Articles
J Exp Biol (2003) 206 (1): 171–180.
Published: 1 January 2003
...@biology.gatech.edu ) 1 10 2002 © The Company of Biologists Limited 2003 2003 chemosensation drag fluid dynamics optimal foraging models predation sensory systems olfaction Callinectis sapidus crab Aquatic and terrestrial invertebrates, such as arthropods, rely heavily...