はく離泡の再付着領域における三次元大規模うず構造

Kyuro Sasaki, Masaru Kiya

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Abstract

Studied in this paper is the three-dimensional structure of large-scale vortices in the reattaching zone of a separation bubble formed at the leading edge of a blunt flat plate with right-angled corners. Contours of two-point correlations of surface-pressure and velocity fluctuations and conditionally-averaged velocity-vector fields in several space-time domains revealed a loop-type structure of the large-scale vortices ; the height of the vortex core is about 0.18 xR xR being the bubble length, from the plate surface ; the distance between legs is 0.6xR; the legs incline by an angle 56° to the surface. A qualitative picture of the large-scale vortices is proposed.

Original languageJapanese
Pages (from-to)308-316
Number of pages9
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume51
Issue number461
DOIs
Publication statusPublished - Jan 1 1985
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes
  • Condensed Matter Physics
  • Mechanical Engineering

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