... was to test for convergence in the hydrodynamic effects of jaw protrusion in acanthomorphs and cypriniforms. Using goldfish as a representative cypriniform, we employed digital particle image velocimetry (DPIV) to characterize the flows produced during feeding events and compare these data with patterns...

... 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...

... 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...

... be analyzed using digital particle image velocimetry (DPIV). Time-averaged forces generated by the fin were quantified from vorticity fields of the fin wake. During the low swimming speeds considered in this study [<2.5 dorsal mantle lengths ( DML ) per second], L. brevis exhibited four unique fin wake...

... flow visualization digital particle image velocimetry kinematics fin foil propulsion The comparative biomechanics and physiology of moving through water has long attracted the attention of both biologists and engineers, and recent decades have witnessed considerable growth in the study...

... to represent a model analogous to transitional adaptive states during the evolution of powered avian flight. To begin to reveal the aerodynamics of flap-running, we used digital particle image velocimetry (DPIV) and measured air velocity, vorticity, circulation and added mass in the wake of chukar partridge...

... of Biologists Limited 2005 2005 swimming maneuvering locomotion dorsal fin adipose fin vortex wake flow visualization digital particle image velocimetry rainbow trout Oncorhynchus mykiss A key feature of locomotor anatomy in fishes is the dorsal fin, which is one of three median fins...

... enhancement during the fling phase: a prominent peak during the initial phase of the fling motion, which accounts for most of the benefit in lift production, and a smaller peak of force enhancement at the end fling when the wings started to move apart. A detailed digital particle image velocimetry (DPIV...

...L. Christoffer Johansson; George V. Lauder SUMMARY The kinematics of swimming frogs have been studied extensively in the past and, based on these results, hypotheses regarding the hydrodynamics of frog swimming can be generated. To test these hypotheses we used digital particle image velocimetry...

...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...

... the behavioral and hydromechanical repertoire of the paired pectoral fins of rainbow trout Oncorhynchus mykiss , performing both steady rectilinear swimming and unsteady maneuvering locomotion. A combination of kinematic analysis and quantitative flow visualization (using digital particle image velocimetry...

... species of shark and compare shark tail function with previous hydrodynamic data on the heterocercal tail of sturgeon Acipenser transmontanus . To address the two models of shark heterocercal tail function, we applied the technique of digital particle image velocimetry (DPIV) to quantify the wake of two...

... hydrodynamic study of dorsal fin function in teleost fishes, we analyzed the wake created by the soft dorsal fin of bluegill sunfish ( Lepomis macrochirus ) during both steady swimming and unsteady turning maneuvers. Digital particle image velocimetry was used to visualize wake structures and to calculate...

... locomotor dynamics. In this paper, we measure the fluid forces exerted by the left and right pectoral fins of bluegill sunfish ( Lepomis macrochirus ) during turning using digital particle image velocimetry (DPIV). DPIV allowed quantification of water velocity fields, and hence momentum, in the wake...

... 2000 © 2001 by Company of Biologists 2001 undulatory swimming fish boundary layer friction drag separation hydrodynamics digital particle image velocimetry digital particle tracking velocimetry When a body moves relative to a surrounding fluid, a boundary layer exists very...

... to swim faster than others from a hydrodynamic perspective, using the technique of digital particle image velocimetry which allows measurement of fluid velocity and estimation of wake momentum and mechanical forces for locomotion. We investigate the structure and strength of the wake in three dimensions...

...Eliot G. Drucker; George V. Lauder ABSTRACT Quantifying the locomotor forces experienced by swimming fishes represents a significant challenge because direct measurements of force applied to the aquatic medium are not feasible. However, using the technique of digital particle image velocimetry...

...-mail: [email protected] ) 27 05 1999 09 08 1999 © 1999 by Company of Biologists 1999 carangiform swimming hydrodynamics unsteady propulsion manoeuvering giant danio Danio malabaricus vorticity control digital particle image velocimetry panel method Several theories...