Oscillatory modes in an enclosed swirling flow

Juan Lopez, F. Marques, J. Sanchez

Research output: Contribution to journalArticle

40 Scopus citations

Abstract

The flow in a completely filled cylinder driven by a rotating endwall has multiple time-dependent stable states when the endwell rotation exceeds a critical value. These states have been observed experimentally and computed numerically elsewhere. In this article, the linear stability of the basic state, which is a non-trivial axisymmetric flow, is analysed at parameter values where the unsteady solutions exist. We show that the basic state undergoes a succession of Hopf bifurcations and the corresponding eigenvalues and eigenvectors of these excited modes describe most of the characteristics of the observed time-dependent states.

Original languageEnglish (US)
Pages (from-to)109-129
Number of pages21
Journaljournal of fluid mechanics
Volume439
DOIs
StatePublished - Jul 25 2001

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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