はく離泡の再付着領域における三次元大規模うず構造

Translated title of the contribution: Three-Dimensional Structure of Large-Scale Vortices in the Reattaching Zone of a Turbulent Separation Bubble

Kyuro Sasaki, Masaru Kiya

Research output: Contribution to journalArticle

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 0.6 xR ; the legs incline by an angle 56 to the surface. A qualitative picture of the large-scale cortices 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 25 1985
Externally publishedYes

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering
  • Engineering(all)
  • Earth and Planetary Sciences(all)

Cite this