Taylor, Graham, Triantafyllou, Michael S., Tropea, Cameron (Eds.)
Originally published as special issue "Swimming (Vol. 43 Issue 5) und Flying (Vol. 46 Issue 5)" of the Experiments in Fluids Journal.
2010, IX, 443 p.
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Examines the state of research on the physics of swimming and flying animals
Explores topics of interest in pure and applied research
Considers new questions arising from the development of innovative experimental techniques
The physical principles of swimming and flying in animals are intriguingly different from those of ships and airplanes. The study of animal locomotion therefore holds a special place not only at the frontiers of pure fluid dynamics research, but also in the applied field of biomimetics, which aims to emulate salient aspects of the performance and function of living organisms. For example, fluid dynamic loads are so significant for swimming fish that they are expected to have developed efficient flow control procedures through the evolutionary process of adaptation by natural selection, which might in turn be applied to the design of robotic swimmers. And yet, sharply contrasting views as to the energetic efficiency of oscillatory propulsion – especially for marine animals – demand a careful assessment of the forces and energy expended at realistic Reynolds numbers. For this and many other research questions, an experimental approach is often the most appropriate methodology. This holds as much for flying animals as it does for swimming ones, and similar experimental challenges apply – studying tethered as opposed to free locomotion, or studying the flow around robotic models as opposed to real animals. This book provides a wide-ranging snapshot of the state-of-the-art in experimental research on the physics of swimming and flying animals. The resulting picture reflects not only upon the questions that are of interest in current pure and applied research, but also upon the experimental techniques that are available to answer them.
Content Level »Research
Keywords »Pitch - development - dynamics - fish - fluid dynamics - vortices
The Hydrodynamics of Swimming.- Swimming hydrodynamics: ten questions and the technical approaches needed to resolve them.- A potential-flow, deformable-body model for fluid-structure interactions with compact vorticity: application to animal swimming measurements.- Wake visualization of a heaving and pitching foil in a soap film.- A harmonic model of hydrodynamic forces produced by a flapping fin.- Flowfield measurements in the wake of a robotic lamprey.- Impulse generated during unsteady maneuvering of swimming fish.- Do trout swim better than eels? Challenges for estimating performance based on the wake of self-propelled bodies.- Time resolved measurements of the flow generated by suction feeding fish.- Powered control mechanisms contributing to dynamically stable swimming in porcupine puffers (Teleostei: Diodon holocanthus).- Fluid dynamics of self-propelled microorganisms, from individuals to concentrated populations.- Swimming by microscopic organisms in ambient water flow.- Water-walking devices.- Flapping flexible fish.- Vortex dynamics in the wake of a mechanical fish.- Investigation of flow mechanism of a robotic fish swimming by using flow visualization synchronized with hydrodynamic force measurement.- The Physics of Flying.- PIV-based investigations of animal flight.- Wing–wake interaction reduces power consumption in insect tandem wings.- Experimental investigation of some aspects of insect-like flapping flight aerodynamics for application to micro air vehicles.- Design and development considerations for biologically inspired flapping-wing micro air vehicles.- Smoke visualization of free-flying bumblebees indicates independent leading-edge vortices on each wing pair.- The influence of airfoil kinematics on the formation of leading-edge vortices in bio-inspired flight.- Wake patterns of the wings and tail of hovering hummingbirds.- Characterization of vortical structures and loads based on time-resolved PIV for asymmetric hovering flapping flight.- Unsteady fluid-structure interactions of membrane airfoils at low Reynolds numbers.- Aerodynamic and functional consequences of wing compliance.- Shallow and deep dynamic stall for flapping low Reynolds number airfoils.- High-fidelity simulations of moving and flexible airfoils at low Reynolds numbers.- High-speed stereo DPIV measurement of wakes of two bat species flying freely in a wind tunnel.- Time-resolved wake structure and kinematics of bat flight.- Experimental investigation of a flapping wing model.- Aerodynamics of intermittent bounds in flying birds.- Experimental analysis of the flow field over a novel owl based airfoil.- The aerodynamic forces and pressure distribution of a revolving pigeon wing.