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- W2324363018 abstract "There are various propulsion, maneuvering, and stabilization mechanisms in nature, which can provide inspiration for similar mechanisms in man-made vehicles. This study aims to elucidate and compare the propulsive vortical signature and performance of a foil in two important natural mechanisms of pure pitching and undulatory oscillations. Governing equations are solved with a pressure-based finite volume method solver, in an arbitrary Lagrangian–Eulerian framework domain containing a NACA 0012 foil moving with prescribed kinematics. The results show that in a given Reynolds number ( Re), the undulating mechanism produces thrust at a higher Strouhal number ( St) and with smaller growth slope, but mostly higher efficiency, versus St, than pitching mechanism. In addition, vortical structures of these mechanisms have significant differences and also vary considerably with St. One of the distinguishable features of vortical signatures is the presence of the leading-edge vortices for the pitching foil, which are not appearing in the undulating foil’s vortical pattern." @default.
- W2324363018 created "2016-06-24" @default.
- W2324363018 creator A5037516717 @default.
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- W2324363018 date "2014-04-17" @default.
- W2324363018 modified "2023-09-27" @default.
- W2324363018 title "Numerical analysis of wake structure and performance of two oscillatory mechanisms of a foil: Pure pitching and undulating" @default.
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- W2324363018 doi "https://doi.org/10.1177/1475090214526709" @default.
- W2324363018 hasPublicationYear "2014" @default.
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