The Proceedings of the Fluids engineering conference
Online ISSN : 2424-2896
2013
Conference information
0306 Experiments on the turbulent drag reduction using wavy riblets
Ayumu INASAWA, Yoshiyuki AOKI, Masahito ASAI, Yu NISHIO, Kie OKABAYASHI, Yasuhiro KOSHIOKA
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Keywords: riblets, drag reduction, turbulent flow
CONFERENCE PROCEEDINGS FREE ACCESS

Pages _0306-01_-_0306-02_

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Abstract
Turbulent drag reduction over riblets with trapezoidal cross-section was examined by wind channel experiment and direct numerical simulation. The maximum drag reduction of 6% compared to the smooth surface was confirmed for the straight groove with spanwise interval of 18 in wall units. The good agreement between experiment and DNS was demonstrated. Drag reduction over wavy riblets was also examined.
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© 2013 The Japan Society of Mechanical Engineers
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