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Fluid Flow and Heat Transfer in Microchannels With Rectangular Cross Section

[+] Author Affiliations
Jung-Yeul Jung, Ho-Young Kwak

Chung-Ang University, Seoul, Korea

Paper No. ICMM2003-1032, pp. 291-297; 7 pages
doi:10.1115/ICMM2003-1032
From:
  • ASME 2003 1st International Conference on Microchannels and Minichannels
  • 1st International Conference on Microchannels and Minichannels
  • Rochester, New York, USA, April 24–25, 2003
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-3667-3
  • Copyright © 2003 by ASME

abstract

Forced convective heat transfer coefficients and friction factor for flow of water and FC-72 in microchannels with a rectangular cross section were measured. An integrated microsystem consisting of five microchannels on one side and a localized heater and seven polysilicon temperature sensors along the selected channels on the other side was fabricated by using a double side polished silicon wafer. For the microchannels tested, the friction factor constant C = f ReDh obtained are values between 35.7 and 81.9, which are close to the theoretical value of 57.0. The measured Nusselt number in the laminar regime tested could be correlated by a correlation, Nu = A ReDh 1.37 Pr1/3 where A is the value between 0.000 454 and 0.000 646.

Copyright © 2003 by ASME

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