Direct Numerical Simulations of Turbulent Flow Over Various Riblet Shapes in Minimal-Span Channels
Riblets reduce skin-friction drag until their viscous-scaled size becomes large enough for turbulence to approach the wall, leading to the breakdown of drag-reduction. In order to investigate inertial-flow mechanisms that are responsible for the breakdown, we employ the minimal-span channel concept...
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Veröffentlicht in: | Flow, turbulence and combustion turbulence and combustion, 2021-06, Vol.107 (1), p.1-29 |
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Sprache: | eng |
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