Turbulent Skin-Friction Drag Reduction at High Reynolds Numbers

Davide Gatti ()
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Davide Gatti: Karlsruhe Institute of Technology (KIT), Institute of Fluid Mechanics (ISTM)

A chapter in High Performance Computing in Science and Engineering ´16, 2016, pp 389-398 from Springer

Abstract: Abstract Direct Numerical Simulation (DNS) of turbulent channel flows at moderately high values of the Reynolds number (Re) are performed to examine how Re affects the capabilities of wall-based spanwise-forcing techniques to achieve turbulent skin-friction drag reduction. With the present new data, a relationship could be derived and validated, which predicts the amount of drag reduction at several values of Re. The present study shows that a drag reduction of nearly 30 % would still be possible for an airplane at flight Reynolds numbers thanks to the spanwise forcing.

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-319-47066-5_26

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DOI: 10.1007/978-3-319-47066-5_26

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