Pattern variation of the secondary flow in rectangular curved ducts

Kyoji Yamamoto, Ken Kadowaki, Shinichiro Yanase, Yoshito Kaga

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The flow through a rectangular curved duct is investigated numerically with emphasis on the secondary flow patterns. The non-dimensional curvature of the duct is taken to be 0.02 and the aspect ratios of the duct cross-section are considered to be 0.5, 2, 3 and 4. The calculation covers a wide range of the Dean number. The steady solutions are first calculated and then the linear stability of the solutions is examined. The multiple solutions and the bifurcation of the solutions are obtained. The critical Dean numbers at which the transition of the secondary flow patterns occurs are also obtained.

Original languageEnglish
Pages (from-to)2822-2829
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number699
Publication statusPublished - Nov 2004


  • Curved Duct Flow
  • Dean Number
  • Linear Stability
  • Rectangular Cross-Section
  • Secondary Flow

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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