Multiple solution of a flow in a curved rectangular duct (2nd report, resistance coefficient of the duct flow)

Shinichiro Yanase, Ryuji Daikai, Yoshito Kaga, Kyoji Yamamoto

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The flow through a curved rectangular duct with the curvature=0.1 is investigated numerically at the Dean number Dn = 100 for various aspect ratio of the duct cross section by use of the spectral method of the polynomial function expansion. Resistance coefficient of the duct flow is calculated in terms of two different ways for all the steady solution branches which have been obtained in the previous report'". The relation between the values of resistance coefficient and the linear stability characteristics of the steady solutions is studied. It is found that linearly stable solutions exist on the branches for which the resistance coefficient is largest or second largest. The axial velocity distributions are examined comparing with the secondary flow patterns in the cross section.

Original languageEnglish
Pages (from-to)3622-3628
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume65
Issue number639
DOIs
Publication statusPublished - Nov 1999

Keywords

  • Bifurcation
  • Curved duct
  • Resistance coefficient
  • Spectral method

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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