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1-19 of 19
Keywords: DPIV
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Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2016) 219 (14): 2182–2191.
Published: 15 July 2016
...: Closely spaced structures submerged within a current produce organized flows that encourage refuging in fish. Vortex street Oncorhynchus mykiss Kármán gait Flow visualization DPIV CFD Turbulence Swimming Fishes in current-swept environments must successfully navigate complex flows...
Journal Articles
Independently evolved upper jaw protrusion mechanisms show convergent hydrodynamic function in teleost fishes
Available to Purchase
Journal:
Journal of Experimental Biology
J Exp Biol (2012) 215 (9): 1456–1463.
Published: 1 May 2012
... velocimetry (DPIV) to compare suction feeding flow dynamics in a representative of each of these clades: goldfish and bluegill. Using DPIV, we contrast the spatial pattern of flow, the temporal relationship between flow and head kinematics, and the contribution of jaw protrusion to the forces exerted on prey...
Journal Articles
Escaping the flow: boundary layer use by the darter Etheostoma tetrazonum (Percidae) during benthic station holding
Available to Purchase
Journal:
Journal of Experimental Biology
J Exp Biol (2011) 214 (7): 1181–1193.
Published: 1 April 2011
... ( [email protected] ) 3 12 2010 © 2011. 2011 DPIV digital particle image velocimetry fish fluid dynamics pectoral fin substrate vorticity Lotic, or flowing water, environments such as creeks, streams and rivers are characterized by measurable directional flow ( Allan, 1995...
Journal Articles
Aerodynamics of gliding flight in common swifts
Available to Purchase
Journal:
Journal of Experimental Biology
J Exp Biol (2011) 214 (3): 382–393.
Published: 1 February 2011
... using stereo digital particle image velocimetry (DPIV). The main structures of the wake were a pair of trailing wingtip vortices and a pair of trailing tail vortices. Circulation of these was measured and a model was constructed that showed good weight support. Parasite drag was estimated from the wake...
Journal Articles
The vortex wake of blackcaps ( Sylvia atricapilla L.) measured using high-speed digital particle image velocimetry (DPIV)
Available to Purchase
Journal:
Journal of Experimental Biology
J Exp Biol (2009) 212 (20): 3365–3376.
Published: 15 October 2009
...-speed DPIV measurements in the transverse plane behind freely flying blackcaps. We found novel wake structures previously not shown in birds, including wing root vortices of opposite as well as the same sign as the wing tip vortices. This suggests a more complex wake structure in birds than previously...
Includes: Supplementary data
Journal Articles
Fluid dynamics of feeding behaviour in white-spotted bamboo sharks
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Journal:
Journal of Experimental Biology
J Exp Biol (2008) 211 (19): 3095–3102.
Published: 1 October 2008
... of feeding sharks was quantified using time-resolved digital particle image velocimetry (DPIV). The maximal size of the fluid velocity region is 56%larger in successful strikes than unsuccessful strikes (10.79 cm 2 vs 6.90 cm 2 ), but they do not differ in duration,indicating that strikes are modulated based...
Journal Articles
The near and far wake of Pallas' long tongued bat ( Glossophaga soricina )
Available to PurchaseL. Christoffer Johansson, Marta Wolf, Rhea von Busse, York Winter, Geoffrey R. Spedding, Anders Hedenström
Journal:
Journal of Experimental Biology
J Exp Biol (2008) 211 (18): 2909–2918.
Published: 15 September 2008
.... Fincham, A. M. and Spedding, G. R. ( 1997 ). Low-cost, high resolution DPIV for measurement of turbulent fluid flow. Exp. Fluids 23 , 449 -462. Grafen, A. and Hails, R. ( 2002 ). Modern Statistics for the Life Sciences . Oxford:Oxford University Press. Grodnitsky, D. L. and Morozov, P. P...
Includes: Supplementary data
Journal Articles
Flow patterns of larval fish: undulatory swimming in the intermediate flow regime
Available to Purchase
Journal:
Journal of Experimental Biology
J Exp Biol (2008) 211 (2): 196–205.
Published: 15 January 2008
... in the interaction between fish and water. To study the influence of the relatively high viscous forces compared with adult fish, we mapped the flow around swimming zebrafish ( Danio rerio ) larvae using two-dimensional digital particle image velocimetry (2D-DPIV) in the horizontal and transverse plane of the fish...
Journal Articles
The pressures of suction feeding: the relation between buccal pressure and induced fluid speed in centrarchid fishes
Available to Purchase
Journal:
Journal of Experimental Biology
J Exp Biol (2006) 209 (17): 3281–3287.
Published: 1 September 2006
... to the mouth are understood to be mechanically linked but the relationship between them has never been empirically determined in any suction feeder. We present the first simultaneous measurements of fluid speed and buccal pressure during suction feeding in fishes. Digital particle image velocimetry (DPIV...
Journal Articles
Multidimensional analysis of suction feeding performance in fishes: fluid speed, acceleration, strike accuracy and the ingested volume of water
Available to Purchase
Journal:
Journal of Experimental Biology
J Exp Biol (2006) 209 (14): 2713–2725.
Published: 15 July 2006
... also calculated the ingested volume and a novel metric of strike accuracy. In addition, we quantified for each species the effects of gape magnitude, time to peak gape, and swimming speed on features of the ingested volume of water. Digital particle image velocimetry (DPIV) and high-speed video were...
Journal Articles
Spatial and temporal patterns of water flow generated by suction-feeding bluegill sunfish Lepomis macrochirus resolved by Particle Image Velocimetry
Available to Purchase
Journal:
Journal of Experimental Biology
J Exp Biol (2005) 208 (14): 2661–2671.
Published: 15 July 2005
... relationship between the rate of buccal cavity expansion and maximum generated flow speed. 24 5 2005 © The Company of Biologists Limited 2005 2005 DPIV suction feeding Centrarchidae sunfish Lepomis macrochirus * Author for correspondence (e-mail: [email protected]...
Journal Articles
Sucking while swimming: evaluating the effects of ram speed on suction generation in bluegill sunfish Lepomis macrochirus using digital particle image velocimetry
Available to Purchase
Journal:
Journal of Experimental Biology
J Exp Biol (2005) 208 (14): 2653–2660.
Published: 15 July 2005
... the effects of ram on the maximum fluid speed of the water entering the mouth during feeding as well as the spatial patterns of flow entering the mouth of suction-feeding bluegill sunfish Lepomis macrochirus . Using Digital Particle Image Velocimetry (DPIV) and high-speed video, we observed the flow in front...
Journal Articles
Propulsive force calculations in swimming frogs II. Application of a vortex ring model to DPIV data
Available to Purchase
Journal:
Journal of Experimental Biology
J Exp Biol (2005) 208 (8): 1445–1451.
Published: 15 April 2005
... Rana esculenta , applying digital particle image velocimetry (DPIV) to the frog's wake. The wake showed two vortex rings left behind by the two feet. The rings appeared to be elliptic in planform, urging for correction of the observed ring radii. The rings' long and short axes (average ratio 1.75:1...
Journal Articles
Propulsive force calculations in swimming frogs I. A momentum–impulse approach
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Journal:
Journal of Experimental Biology
J Exp Biol (2005) 208 (8): 1435–1443.
Published: 15 April 2005
... and swimming. To explore this difference further, we determined the instantaneous forces during propulsion in swimming using an impulse–momentum approach based on DPIV flow data. The force profile obtained was compared with force profiles obtained from drag–thrust equilibrium of the centre of mass...
Journal Articles
The aerodynamics of Manduca sexta : digital particle image velocimetry analysis of the leading-edge vortex
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Journal:
Journal of Experimental Biology
J Exp Biol (2005) 208 (6): 1079–1094.
Published: 15 March 2005
...Richard J. Bomphrey; Nicholas J. Lawson; Nicholas J. Harding; Graham K. Taylor; Adrian L. R. Thomas SUMMARY Here we present the first digital particle image velocimetry (DPIV)analysis of the flow field around the wings of an insect (the tobacco hawkmoth Manduca sexta , tethered to a 6-component...
Journal Articles
Jet flow in steadily swimming adult squid
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Journal:
Journal of Experimental Biology
J Exp Biol (2005) 208 (6): 1125–1146.
Published: 15 March 2005
... of jet velocity and other jet parameters in squid have been reported. We used digital particle imaging velocimetry (DPIV) to visualize the jet flow of adult long-finned squid Loligo pealei (mantle length, L m =27.1±3.0 cm, mean ± s . d .) swimming in a flume over a wide range of speeds(10.1-59.3 cm s -1...
Journal Articles
The fluid dynamics of flight control by kinematic phase lag variation between two robotic insect wings
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Journal:
Journal of Experimental Biology
J Exp Biol (2004) 207 (26): 4707–4726.
Published: 15 December 2004
... ) 30 9 2004 © The Company of Biologists Limited 2004 2004 insect flight aerodynamics DPIV leading edge vortex wake dragonfly Functionally four-winged insects such as dragon- and damselflies use a large variety of wingbeat kinematics to produce and control aerodynamic forces...
Journal Articles
Hydrodynamics of surface swimming in leopard frogs ( Rana pipiens )
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Journal:
Journal of Experimental Biology
J Exp Biol (2004) 207 (22): 3945–3958.
Published: 15 October 2004
... (DPIV) to quantify the flow structure of the wake produced by the feet during the propulsion phase of the kick of surface swimming frogs( Rana pipiens ). These frogs use two different gaits, asynchronous and synchronous kicking, and the magnitude of the thrust produced by the feet differs between...
Includes: Multimedia, Supplementary data
Journal Articles
The influence of wing–wake interactions on the production of aerodynamic forces in flapping flight
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Journal:
Journal of Experimental Biology
J Exp Biol (2003) 206 (13): 2257–2272.
Published: 1 July 2003
...James M. Birch; Michael H. Dickinson SUMMARY We used two-dimensional digital particle image velocimetry (DPIV) to visualize flow patterns around the flapping wing of a dynamically scaled robot for a series of reciprocating strokes starting from rest. The base of the wing was equipped with strain...