Experimental study of rotation effects on heat/mass transfer in a smooth channel with bleed holes

Kyung Min Kim, Sang In Kim, Yun Heung Jeon, Dong Hyun Lee, Hyung Hee Cho

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

1 Citation (Scopus)

Abstract

The present study investigates the effects of bleed flow on heat/mass transfer in a rotating smooth channel. The hydraulic diameter (D h) of the channel is 40.0 mm and the diameter of the bleed holes (d) on leading surface is 4.5 mm. The tests were conducted under conditions of various bleed flow rates (0%, 10%, 20%) and rotation numbers (0, 0.2, 0.4), while Reynolds number was fixed at 10,000. A naphthalene sublimation method was employed to determine detailed local heat transfer coefficients using heat and mass transfer analogy. The results suggest that heat/mass transfer characteristics in internal cooling passages are influenced by bleed flow and Coriolis force induced by rotation. For cases with the bleed flow, the heat/mass transfer on the leading surface is higher than that without the bleed flow due to tripping flow by suction. With increment of rotation numbers, the heat/mass transfer on the leading surface is increased before Ro=0.2, but is decreased after Ro=0.2 by rotation effects.

Original languageEnglish
Title of host publicationProceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11
Pages132-141
Number of pages10
Publication statusPublished - 2006 Dec 1
Event11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11 - Honolulu, HI, United States
Duration: 2006 Feb 262006 Mar 2

Publication series

NameProceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11
Volume1

Other

Other11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11
CountryUnited States
CityHonolulu, HI
Period06/2/2606/3/2

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All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Kim, K. M., Kim, S. I., Jeon, Y. H., Lee, D. H., & Cho, H. H. (2006). Experimental study of rotation effects on heat/mass transfer in a smooth channel with bleed holes. In Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11 (pp. 132-141). (Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11; Vol. 1).