High rotation number heat transfer of rotating trapezoidal duct with 45-deg staggered ribs and bleeds from apical side wall

Shyy-Woei Chang, Tong Minn Liou, Shyr Fuu Chiou, Shuen Fei Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

An experimental study of heat transfer in a radially rotating trapezoidal duct with two opposite walls roughened by 45° staggered ribs and mid-rib bleeds from the apical side wall is performed. Centerline heat transfer variations on two rib-roughened surfaces are measured for radially outward flows with and without bleeds at test conditions of Reynolds number (Re), rotation number (Ro) and density ratio (Δρ/ρ) in the ranges of 15000-30000, 0-0.8 and 0.04-0.31, respectively. Geometrical configurations and rotation numbers tested have considerably extended the previous experiences that offer practical applications to the trail edge cooling of a gas turbine rotor blade. A selection of experimental data illustrates the individual and interactive influences of Re, Ro and buoyancy number (Bu) on local heat transfer with and without bleeds. Local heat transfer results are generated with the influences of sidewall bleeds examined to establish heat transfer correlations with Re, Ro and Bu as the controlling flow parameters for design applications.

Original languageEnglish
Title of host publicationProceedings of the ASME Turbo Expo 2007 - Power for Land, Sea, and Air
Pages909-921
Number of pages13
DOIs
Publication statusPublished - 2007 Sep 24
Event2007 ASME Turbo Expo - Montreal, Que., Canada
Duration: 2007 May 142007 May 17

Publication series

NameProceedings of the ASME Turbo Expo
Volume4 PART B

Other

Other2007 ASME Turbo Expo
CountryCanada
CityMontreal, Que.
Period07-05-1407-05-17

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Chang, S-W., Liou, T. M., Chiou, S. F., & Chang, S. F. (2007). High rotation number heat transfer of rotating trapezoidal duct with 45-deg staggered ribs and bleeds from apical side wall. In Proceedings of the ASME Turbo Expo 2007 - Power for Land, Sea, and Air (pp. 909-921). (Proceedings of the ASME Turbo Expo; Vol. 4 PART B). https://doi.org/10.1115/GT2007-28174