Mixed convection in an annulus of large aspect ratio

L. S. Yao, Bradley Rogers

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Mixed convection in an annulus of large aspect ratio is studied. At an aspect ratio of 100, the effect of wall curvature is minimal, and both the base flow and the stability characteristics approach those of a two-dimensional channel flow. The linearstability results demonstrate that the fully developed flow is unstable in regions of practical interest in an appropriate parameter space. Consequently, commonly assumed steady parallel countercurrent flows in many idealized numerical and analytical studies are unlikely to be observed experimentally.

Original languageEnglish (US)
Pages (from-to)683-689
Number of pages7
JournalJournal of Heat Transfer
Issue number3
StatePublished - Aug 1989


  • Flow Instability
  • Mixed Convection

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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