Heat transfer in transitional and turbulent boundary layers with system rotation

D. Yamawaki, S. Obi, S. Masuda

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The present paper reports on the influence of system rotation on the heat transfer characteristics of transitional and turbulent zero-pressure gradient boundary layers. A test plate is installed in a wind tunnel, which is rotatable around the axis parallel to the plate leading edge with constant speed of rotation. Local heat transfer coefficient during rotation is determined by employing a thermochromic liquid crystal. Effects of the Coriolis force and the centrifugal buoyancy force have been examined by comparing the heat transfer coefficient with different free-stream velocities, rotational speeds and wall temperatures. It has been revealed that the Coriolis force has significant effect on transitional heat transfer, while its effect on turbulent heat transfer is moderate. The centrifugal buoyancy exhibits additional effects if the thermal loading is high.

Original languageEnglish
Pages (from-to)186-193
Number of pages8
JournalInternational Journal of Heat and Fluid Flow
Volume23
Issue number2
DOIs
Publication statusPublished - 2002 Apr 1

Keywords

  • Centrifugal buoyancy
  • Coriolis force
  • Flat plate boundary layer
  • Geortler instability
  • Heat transfer
  • Liquid crystal
  • System rotation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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