Dial, K.P.; Warrick, D.R.*; Bundle, M.W.: Avian Maneuverability and Stability: Blurred Bodies, Clear Heads Popular models of avian maneuverability based on steady-state assumptions and parameters such as wing loading fail to describe the full ecological and evolutionary import of maneuvering performance, particularly during low speed, flapping flight. Previous studies revealed that in this key flight […]

RAYNER, J. M. V. *; MAYBURY, W. J.; COULDRICK, L. B.: Aerodynamic control by the avian tail The bird tail has been credited as a means of controlling stability and manoeuvrability in flight and as a supplementary lifting organ, but others have emphasized its role in sexual selection and display. Theoretical models of tail aerodynamics […]

DRUCKER, E.G.*; LAUDER, G.V.: Wake dynamics and locomotor function in fishes: interpreting evolutionary patterns in paired fin design Documenting phylogenetic patterns in the structure of the paired fins of fishes, and interpreting the functional significance of such patterns, has been the subject of ongoing study by functional morphologists and hydrodynamicists. The evolution of ray-finned fishes […]

TRIANTAFYLLOU , Michael S*; YUE, Dick; HOVER, Franz; TECHET, Alex: Vorticity Control in Fish-like Propulsion and Maneuvering The flow around the bodies of swimming animals is dominated by the formation, growth and shedding of large scale vorticity. The physical mechanisms governing the growth of the vortices and their interactions provide scaling laws which characterize the […]

BARTOL, I.K.*; GORDON, M.S.; GHARIB, M.; WEIHS, D.; WEBB, P.W.: Vortical flows around rigid-bodied, multi-propulsor swimmers Boxfishes (Teleostei: Ostraciidae) are rigid-body, multi-propulsor swimmers that exhibit small amplitude recoil movements during rectilinear locomotion. The mechanisms by which boxfishes achieve such smooth swimming trajectories are not fully understood, and thus the goal of our research program is […]

MULLER, UK: The interaction of body- and tail-generated flows controls the performance of undulatory swimmers Fish reach excellent swimming efficiencies, -manoeuvrability and -speeds by running a transverse wave down their body to propel themselves. Undulatory swimmers can control thrust production by modulating their body wave, in particular the speed with which this wave travels down […]

O’DOR, R.K.: Telemetered cephalopod energetics: swimming, soaring and ballooning. Cephalopods are uniquely suited to field energetic studies. Their hollow mantles that pump water for respiration and jetting also conveniently accommodate differential pressure transducer-transmitters that measure pressure-flow (PQ) power output and can be calibrated against oxygen consumption by swim-tunnel respirometry. Radio-acoustic positioning telemetry (RAPT) allows us […]

DANIEL, T.L.; COMBES, S.A.; TRIMBLE, A.C.: Swimming and flying with flexible wings: bending by inertia or fluid forcing? Flapping flight in many organisms is accompanied by significant wing deformations. Many of these deformations arise, in part, from the passive mechanics of oscillating a flexible air- or hydro-foil. The instantaneous shape of wings has a profound […]

VIDELER, J.J.; STAMHUIS, E.J.; VAN DUREN, L.A.; M�LLER, U.K.: Structure and scaling of aquatic animal wakes Water movements in the wakes of plankton and fish were visualised and quantified using two-dimensional particle image velocimetry (PIV). The resulting vector flow fields allowed the study of the spatial distribution of velocity, acceleration, vorticity, strain and shear in […]

GHARIB, Mory; DABIRI, Dana; PEREIRA, Francisco; MODARES, Darius: Quantitative Flow Visualization: Toward a comprehensive flow diagnostic tool Quantitative flow visualization has many roots and has taken several approaches. The advent of digital image processing has made it possible to practically extract useful information from every kind of flow image. In a direct approach, the image […]