Deflected wake interaction of tandem flapping foils
نویسندگان
چکیده
منابع مشابه
Wake Structure and Performance of Finite Aspect-Ratio Flapping Foils
Most wings and fins found in nature tend to be of low or moderate aspect-ratio. However, most experimental and numerical studies in this area of bio-hydrodynamics have focused on examining large or infinite aspect-ratio flapping foils. In the current study, an efficient, finite-difference based immersed boundary solver for computing flows with moving immersed boundaries has been developed to ex...
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Numerical simulations are used to investigate the effect of aspect ratio on the wake topology and hydrodynamic performance of thin ellipsoidal flapping foils. The study is motivated by the quest to understand the hydrodynamics of fish pectoral fins. The simulations employ an immersed boundary method that allows us to simulate flows with complex moving boundaries on fixed Cartesian grids. A deta...
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Numerical simulations have been used to analyze the effect that vortices, shed from one flapping foil, have on the thrust of another flapping foil placed directly downstream. The simulations attempt to model the dorsal-tail fin interaction observed in a live bluegill sunfish by Drucker & Lauder using Particle Image Velocimetry (PIV). The simulations have been carried out using a Cartesian grid ...
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Flapping foils found in nature such as bird and insect wings and fish fins are being studied for potential use in micro aerial vehicles and autonomous underwater vehicles. The fluid dynamics associated with these foils is extremely complicated and much remains to be learnt in this arena. Experimental investigations of flapping foils in nature are limited by their inability to provide full-field...
متن کاملHydrodynamic Performance of Deformable Fish Fins and Flapping Foils
A computational study of fish fin hydrodynamics is being conducted concurrently with experimental analysis. The presence of a complex shaped moving boundary makes this a difficult proposition for computational fluid dynamics and here we use a Cartesian grid based immersed boundary solver designed to handle such flows in all their complexity. High resolution, high speed video of fish fin movemen...
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2020
ISSN: 0022-1120,1469-7645
DOI: 10.1017/jfm.2020.640