Journal of Aero Aqua Bio-mechanisms
Online ISSN : 2185-1522
ISSN-L : 2185-1522
Original Papers
Drags Acting on a Wavy Plate with Symmetrical Ridgelines Simulating Folded Skins of Dolphins
Dung C. TrieuRyosuke YamasakiYoshimichi Hagiwara
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JOURNAL FREE ACCESS

2013 Volume 3 Issue 1 Pages 29-35

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Abstract

We carried out experiments to measure velocities within turbulent water flow over wavy plates fixed to the bottom of an open channel. We also have measured total drag acting on these plates. Wall-shear stress is evaluated from the gradient of mean velocity adjacent to the plate surface. The pressure drag is calculated from the difference between the total drag and friction drag. Results show that the friction drag for a symmetrical-wavy plate is 21% lower than that for a flat plate. The former, furthermore, offers benefits in reducing pressure-drag increases.

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© 2013 Society of Aero Aqua Bio-mechanisms
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