Local heat/mass transfer and friction loss measurement in a rotating matrix cooling channel

In Taek Oh, Kyung Min Kim, Dong Hyun Lee, Jun Su Park, Hyung Hee Cho

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

4 Citations (Scopus)

Abstract

The present investigation provides detailed local heat/mass transfer distribution and pressure drop characteristics in a matrix cooling channel under rotating conditions. The matrix channel has cooling sub-passages with crossing angle of 45 degrees. Detailed heat/mass transfer coefficients are measured using the naphthalene sublimation method. The pressure drops are also measured. The experiments were conducted under various Reynolds numbers (10,000 to 44,000) and rotation numbers (0.0 to 0.8). For the stationary case, the heat transfer characteristics are dominated by turning, impinging and swirling flow which are induced by the matrix channel geometry. Averaged heat/mass transfer coefficients on the leading and trailing surfaces in the stationary channel are approximately 2.1 times higher than those in a smooth channel. For the rotating cases, the effect of rotation on heat/mass transfer characteristics shows different tendency compared to typical rotating channels with radially outward flow. As the rotation number increases, the Sherwood number ratios increase on the leading surface, but changed slightly on the trailing surface. The thermal performance factors increases with increasing rotation numbers due to increased Sherwood number ratios and decreased friction factor ratios.

Original languageEnglish
Title of host publicationProceedings of the ASME Turbo Expo 2009
Subtitle of host publicationPower for Land, Sea and Air
Pages773-782
Number of pages10
EditionPART B
DOIs
Publication statusPublished - 2009
Event2009 ASME Turbo Expo - Orlando, FL, United States
Duration: 2009 Jun 82009 Jun 12

Publication series

NameProceedings of the ASME Turbo Expo
NumberPART B
Volume3

Other

Other2009 ASME Turbo Expo
CountryUnited States
CityOrlando, FL
Period09/6/809/6/12

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Oh, I. T., Kim, K. M., Lee, D. H., Park, J. S., & Cho, H. H. (2009). Local heat/mass transfer and friction loss measurement in a rotating matrix cooling channel. In Proceedings of the ASME Turbo Expo 2009: Power for Land, Sea and Air (PART B ed., pp. 773-782). (Proceedings of the ASME Turbo Expo; Vol. 3, No. PART B). https://doi.org/10.1115/GT2009-59873