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Heat Transfer in a Rotating Rectangular Channel With Two Opposite Walls Roughened With Spherical Protrusions at High Rotation Numbers

[+] Author Affiliations
S. W. Chang, W. C. Chen

National Kaohsiung Marine University, Kaohsiung, Taiwan

T.-M. Liou

National Tsing Hua University, Hsinchu, Taiwan

Paper No. GT2010-22609, pp. 223-232; 10 pages
doi:10.1115/GT2010-22609
From:
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 4: Heat Transfer, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4399-4 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME

abstract

Detailed heat transfer distributions over two opposite leading and trailing walls roughened by spherical protrusions were measured from a rotating rectangular channel at rotation number up to 0.6 to examine the effects of Reynolds (Re), rotation (Ro) and buoyancy (Bu) numbers on local and area averaged Nusselt numbers (Nu and Nu ) using the infrared thermography. A set of selected heat transfer data illustrates the Coriolis and rotating-buoyancy effects on the detailed Nu distributions and the area-averaged heat transfer performances of the rotating channel. The Nu for the developed flow region on the leading and trailing walls are parametrically analyzed to devise the empirical heat transfer correlations that permit the evaluation of the interdependent and individual Re, Ro and Bu effect on Nu .

Copyright © 2010 by ASME

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