VORTEX BREAKDOWN PHENOMENA IN A CIRCULAR PIPE (5TH REPORT, AXISYMMETRIC BREAKDOWN IN ROTATING CONICAL PIPES).

Yoshikazu Suematsu, Tadaya Ito, Toshiyuki Hayase

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

It is known that a swirling flow in a diverging pipe breaks down more easily than a flow in a converging one. In this report, experiments are made using a divergent pipe, a convergent pipe and a straight pipe, in order to clarify the relation between the shape of pipes and the occurrence of the breakdown. A swirling flow field, which is induced in a rotating conical-pipe, is measured by a laser-Doppler-velocimeter. When each pipe rotates faster than a certain critical value, a stationary internal wave occurs. The vortex breakdown phenomenon is ascribed to the internal waves in swirling flows, as pointed out in preceding reports.

Original languageEnglish
Pages (from-to)4122-4129
Number of pages8
JournalBulletin of the JSME
Volume29
Issue number258
DOIs
Publication statusPublished - 1986 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)

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