Vortex patterns of the flow in a curved duct

Xiaoyun Wu, Sangding Lai, Kyoji Yamamoto, Shinichiro Yanase

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


The vortex patterns of the secondary flow in a curved duct of square cross-section are numerically investigated. The flow is driven by the axial pressure gradient as well as the walls rotation of the duct except the outer wall around the center of curvature. When the rotation is in the same direction as the negative pressure gradient, the secondary flow shows complicated multiple patterns, which consists of two-vortex, four-vortex, eight-vortex or even non-symmetric secondary flow pattern. An analysis of linear stability on the flow is also carried out to distinguish possible flow patterns among multiple steady solutions.

Original languageEnglish
Pages (from-to)920-927
Number of pages8
JournalEnergy Procedia
Publication statusPublished - 2011
Externally publishedYes
Event1st International Conference on Smart Grid and Clean Energy Technologies, ICSGCE 2011 - Chengdu, China
Duration: Sept 27 2011Sept 30 2011


  • Curved duct
  • Screw pump
  • Secondary flow

ASJC Scopus subject areas

  • General Energy


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