ON TRANSITION IN A PIPE - 2. THE EQUILIBRIUM PUFF.

Israel J Wygnanski, M. Sokolov, D. Friedman

Research output: Contribution to journalArticle

168 Citations (Scopus)

Abstract

Conditionally sampled hot-wire measurements were taken in a pipe at low Reynolds numbers (2700 greater than Re greater than 2000) corresponding to the onset of turbulence as a result of a large perturbation in the flow. This type of transition gives rise to a turbulent puff which maintains itself indefinitely at around Re equals 2200. The structure of puffs was investigated in some detail and was found to be very different from the structure of fully developed turbulent pipe flow. Nevertheless, it is independent of the character of the disturbance which created it. The purpose of the study was to gain some insight into the mechanism of transition in a pipe.

Original languageEnglish (US)
Pages (from-to)283-304
Number of pages22
JournalJournal of Fluid Mechanics
Volume69
Issue numberpt 2
StatePublished - Jan 1 1975
Externally publishedYes

Fingerprint

Pipe
pipe flow
Pipe flow
low Reynolds number
Reynolds number
Turbulence
disturbances
turbulence
wire
Wire
perturbation

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Condensed Matter Physics

Cite this

ON TRANSITION IN A PIPE - 2. THE EQUILIBRIUM PUFF. / Wygnanski, Israel J; Sokolov, M.; Friedman, D.

In: Journal of Fluid Mechanics, Vol. 69, No. pt 2, 01.01.1975, p. 283-304.

Research output: Contribution to journalArticle

Wygnanski, IJ, Sokolov, M & Friedman, D 1975, 'ON TRANSITION IN A PIPE - 2. THE EQUILIBRIUM PUFF.', Journal of Fluid Mechanics, vol. 69, no. pt 2, pp. 283-304.
Wygnanski, Israel J ; Sokolov, M. ; Friedman, D. / ON TRANSITION IN A PIPE - 2. THE EQUILIBRIUM PUFF. In: Journal of Fluid Mechanics. 1975 ; Vol. 69, No. pt 2. pp. 283-304.
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