Heat transfer and flow temperature measurements in a rotating triangular channel with various rib arrangements

Dong Hyun Lee, Dong Ho Rhee, Kyung Min Kim, Hyung Hee Cho, Hee Koo Moon

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In the present study, the regionally-averaged heat transfer coefficients and flow temperature distributions were measured in an equilateral triangular channel with three different rib arrangements (α = 45, 90 and 135°). To measure regionally-averaged heat transfer coefficients in the channel, two rows of copper blocks and a single heater were installed on two ribbed walls. The fluid temperature distributions were obtained using a thermocouple-array. The rotation number ranged from 0.0 to 0.1 with a fixed Reynolds number of 10,000. For the 90° ribs, the heat transfer coefficients on the pressure side surface were increased significantly with rotation, while the suction side surface had lower heat transfer coefficients than the stationary channel. For the angled ribs, rib-induced secondary flow dominated the heat transfer characteristics and high heat transfer rates were observed on the regions near the inner wall for the 45° angled ribs and near the leading edge for the 135° angled ribs.

Original languageEnglish
Pages (from-to)1543-1553
Number of pages11
JournalHeat and Mass Transfer/Waerme- und Stoffuebertragung
Volume45
Issue number12
DOIs
Publication statusPublished - 2009 Oct

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

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