SOME PRELIMINARY OBSERVATIONS ON TRANSITION IN A PIPE

Research output: Contribution to conferencePaper

Abstract

Conventional and conditionally sampled hot-wire measurements were taken in a pipe at Reynolds numbers corresponding to the onset of turbulence. The laminar velocity profile is distorted in an axisymmetric fashion with increasing Re. At Re more than 4000 the increase of Re has no significant effect on the shape of the laminar velocity profile even when turbulent slugs appear. Some gross characteristics of turbulent slugs were examined. It was found that a typical slug is symmetical (the shape of the leading edge is the same as the trailing edge) provided that it originates in the pipe and it is not triggered by an obstacle at the inlet.

Original languageEnglish (US)
StatePublished - Jan 1 1970
Externally publishedYes
EventTechnion, Dep Aeronaut Eng - Haifa, Isr
Duration: Apr 1 1970Apr 1 1970

Conference

ConferenceTechnion, Dep Aeronaut Eng
CityHaifa, Isr
Period4/1/704/1/70

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

WYGNANSKI I, I. (1970). SOME PRELIMINARY OBSERVATIONS ON TRANSITION IN A PIPE. Paper presented at Technion, Dep Aeronaut Eng, Haifa, Isr, .