Fluid flow along a channel with an asymmetric oscillating constriction

K. D. Stephanoff, T. J. Pedley, C. J. Lawrence, T. W. Secomb

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

We present here experimental results and theory on the flow of an incompressible fluid (water) in a two-dimensional closed channel with an oscillating asymmetric constriction (Fig. 1). The motion of the constriction models the large amplitude self-excited oscillations that arise when fluid flows through a collapsible tube such as a vein1,2. Downstream of the oscillating constriction, a train of waves appears in the core flow and a double row of eddies forms along the channel walls (Fig. 2). This phenomenon, which occurs at all but the lowest frequencies, has not previously been observed. Our theory explains the occurrence of the wavetrain and accurately predicts several of its properties.

Original languageEnglish (US)
Pages (from-to)692-695
Number of pages4
JournalNature
Volume305
Issue number5936
DOIs
StatePublished - Dec 1 1983

ASJC Scopus subject areas

  • General

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