Optimal strouhal number for swimming animals
WebApr 11, 2024 · Moreover, for a constant swimming speed and flapping frequency, up to certain limit, even with the change in amplitude swimming penguins offer Strouhal number within the recommended range of higher propulsive efficiency i.e., 0.2 < St < 0.4. ... Eloy C (2012) Optimal Strouhal number for swimming animals. J Fluids Struct 30:205–218 WebApr 15, 2004 · SUMMARY. Swimming efficiencies of fish and cetaceans have been related to a certain synchrony between stroke cycle frequency, peak-to-peak tail/fluke amplitude and mean swimming speed. These kinematic parameters form a non-dimensional wake parameter, referred to as a Strouhal number, which for the range between 0.20 and 0.40 …
Optimal strouhal number for swimming animals
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Webattack. The Strouhal number is defi ned as St = f·A/u, where A denotes the characteristic width, f the frequency of movement, and u the velocity of the foil. They presented wake patterns as a function of the angle of attack and the Strouhal number [4]. In 2002, Lauder et al. studied hydrodynamics of fi sh swimming with digital particle image ... WebJul 7, 2024 · Eloy C. Optimal Strouhal number for swimming animals. Journal of Fluids and Structures, 2012, 30, 205–218. Article Google Scholar Download references Acknowledgment This study was funded by the National Natural Science Foundation of China (No. 51275127). Author information Authors and Affiliations
WebDec 15, 2024 · We start with the Strouhal number St, and as apparent from Eq. 1, its estimate is realistic only when the animal does not accelerate or decelerate significantly, a transportation mode usually referred to as cruising and defined as the propulsion phase when wingbeat frequency f, forward speed U and wingbeat amplitude A are fairly constant ...
WebOptimal Strouhal number for swimming animals. EN. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa … WebJun 29, 2024 · Specifically, for swimming and flying animals, the Strouhal number is defined as St=f / U*A, where f is the oscillation frequency, U is the flow rate, and A is the oscillation amplitude....
WebApr 1, 2012 · Using Lighthill's elongated-body theory to address undulatory propulsion, it is demonstrated here that the optimal Strouhal number increases from 0.15 to 0.8 for …
WebOptimal Strouhal number for swimming animals. EN. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk ... earthquake in san jose ca yesterdayWebFeb 8, 2013 · Eloy, C. 2012 Optimal Strouhal number for swimming animals. J. Fluids Struct. 30, 205 – 218. CrossRef Google Scholar Fish, F. E. 2006 The myth and reality of grey’s paradox: implication of dolphin drag reduction for technology. Bioinspir. Biomim. 1, R17 – R25. CrossRef Google Scholar Fish, F. E. & Hui, C. A. 1991 Dolphin swimming – a review. ctm hand showerWebFeb 1, 2011 · The results indicate that the kinematics of the propulsive flukes of odontocete cetaceans are not solely dependent on Strou Hal number, and the Strouhal number range … ctm harpley engineeringWebUsing Lighthill’s elongated-body theory to address undulatory propulsion, it is demonstrated here that the optimal Strouhal number increases from 0.15 to 0.8 for animals spanning … earthquake in san jose nowWeb× Close. The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. earthquake in san jose california todayWebAug 7, 2024 · Abstract. Many swimming and flying animals are observed to cruise in a narrow range of Strouhal numbers, where the Strouhal number [Formula: see text] is a … ctm hargaWebTo evaluate the swimming performances of aquatic animals, an important dimensionless quantity is the Strouhal number, St = f A / U, with f the tail-beat frequency, A the peak-to-p earthquake in san jose ca right now