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Detailed Measurement of Convective Heat Transfer in Rotating Two-Pass Rib-Roughened Coolant Channels FREE

[+] Author Affiliations
S. Mochizuki, M. Beier, A. Murata

Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan

T. Okamura, Y. Hashidate

Toshiba Corp., Tsurumi, Yokohama, Japan

Paper No. 96-TA-006, pp. V001T05A002; 6 pages
doi:10.1115/96-TA-006
From:
  • ASME 1996 Turbo Asia Conference
  • ASME 1996 Turbo Asia Conference
  • Jakarta, Indonesia, November 5–7, 1996
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7877-4
  • Copyright © 1996 by ASME

abstract

The objective of the study is to investigate, through experiments, heat transfer characteristics in a rotating two-pass rib-roughened coolant channel with a sharp 180-deg turn. Detailed measurements of local surface temperatures of the coolant channel are conducted using a newly designed and constructed test section which has as many as 458 thermocouples installed on the rotating channel walls. Description of this unique experimental rig is given. The cross section of the channel is rectangular with 15 mm in width and 30 mm in height. In addition to a rib-free (smooth) surface, two types of rib configurations are employed: 90° and 45° parallel ribs. The measured temperature distribution for the entire test section are shown and the effects of rib configuration and rotation on the cooling performance are examined. It was also found that the secondary flow created in the bend has substantial influence on the heat transfer in the channel after the turning section.

Copyright © 1996 by ASME
Topics: Coolants , Convection
This article is only available in the PDF format.

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