A theoretical prediction of friction drag reduction in turbulent flow by superhydrophobic surfaces

Koji Fukagata, Nobuhide Kasagi, Petros Koumoutsakos

研究成果: Article査読

176 被引用数 (Scopus)

抄録

We present a theoretical prediction for the drag reduction rate achieved by superhydrophobic surfaces in a turbulent channel flow. The predicted drag reduction rate is in good agreement with results obtained from direct numerical simulations at Reτ ≃ 180 and 400. The present theory suggests that large drag reduction is possible also at Reynolds numbers of practical interest (Reτ ∼105-106 by employing a hydrophobic surface, which induces a slip length on the order of ten wall units or more.

本文言語English
論文番号051703
ジャーナルPhysics of Fluids
18
5
DOI
出版ステータスPublished - 2006 5月
外部発表はい

ASJC Scopus subject areas

  • 計算力学
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 流体および伝熱

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