Contribution of Reynolds stress distribution to the skin friction in wall-bounded flows

Koji Fukagata, Kaoru Iwamoto, Nobuhide Kasagi

研究成果: Article

320 引用 (Scopus)

抄録

A simple expression is derived of the componential contributions that different dynamical effects make to the frictional drag in turbulent channel, pipe and plane boundary layer flows. The local skin friction can be decomposed into four parts, i.e., laminar, turbulent, inhomogeneous and transient components, the second of which is a weighted integral of the Reynolds stress distribution. It is reconfirmed that the near-wall Reynolds stress is primarily important for the prediction and control of wall turbulence. As an example, the derived expression is used for an analysis of the drag modification by the opposition control and by the uniform wall blowing/suction.

元の言語English
ジャーナルPhysics of Fluids
14
発行部数11
DOI
出版物ステータスPublished - 2002 11
外部発表Yes

Fingerprint

wall flow
Wall flow
skin friction
Skin friction
Reynolds stress
stress distribution
Drag
Stress concentration
drag
Boundary layer flow
Blow molding
Turbulence
boundary layer flow
blowing
Pipe
suction
turbulence
predictions

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes
  • Condensed Matter Physics

これを引用

Contribution of Reynolds stress distribution to the skin friction in wall-bounded flows. / Fukagata, Koji; Iwamoto, Kaoru; Kasagi, Nobuhide.

:: Physics of Fluids, 巻 14, 番号 11, 11.2002.

研究成果: Article

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