Taylor-Dean flow through a curved duct of square cross section

Kyoji Yamamoto, Xiaoyun Wu, Toru Hyakutake, Shinichiro Yanase

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The Taylor-Dean flow through a curved duct of square cross section, in which walls of the duct except the outer wall rotate around the center of curvature and an azimuthal pressure gradient is imposed, is investigated numerically using the spectral method. The calculation covers a wide range of pressure gradient and duct rotational speed. The steady flow patterns of the induced secondary flow and flux through the duct are obtained. It is found that the secondary flow consists of two vortices in a cross section when the rotation of the duct is large and opposite to the negative pressure gradient. When the rotation is in the same direction as the negative pressure gradient, the secondary flow shows more complicated behavior. There appear four-vortex, eight-vortex or even non-symmetric secondary flow patterns with respect to the center line of the cross section. An analysis of linear stability is also carried out.

Original languageEnglish
Pages (from-to)67-86
Number of pages20
JournalFluid Dynamics Research
Volume35
Issue number2
DOIs
Publication statusPublished - Aug 2004

Keywords

  • Curved duct
  • Rotating duct
  • Secondary flow
  • Taylor-Dean flow

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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