Vortex precession in a gas-liquid flow

S. V. Alekseenko, P. A. Kuibin, V. L. Okulov, S. I. Shtork

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The work is devoted to experimental investigation of the influence of a gas phase on the self-oscillating regime with the vortex core precession occurring in a twisted flow in the case of a helical type of the decomposition of an axisymmetric vortex. Investigations of the frequency of vortex precession and of the full pressure drop over the test section of a vortex chamber depending on the liquid flow rate and gas content were carried out. The relations obtained reveal a number of interesting effects that reflect the specific features in the behavior of precessing vortices with a gas core. These investigations are important, for example, for controlling resonance oscillations occurring in hydroturbines.

Original languageEnglish
Pages (from-to)465-477
Number of pages13
JournalHeat Transfer Research
Volume41
Issue number4
DOIs
Publication statusPublished - 1 Nov 2010
Externally publishedYes

Keywords

  • Axisymmetric vortex
  • Gas-liquid flow
  • Twisted flow
  • Vortex precession

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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