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Two-Phase Flow Patterns in a Square Micro-Channel

[+] Author Affiliations
Jian-Fu Zhao, Bin Li

Chinese Academy of Sciences, Beijing, China

Paper No. ICMM2003-1059, pp. 487-491; 5 pages
doi:10.1115/ICMM2003-1059
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

A new set of experimental data of two-phase air-water flow patterns in a square micro-channel is presented. The channel has a cross-section of 1×1 mm2 and a length of 300 mm. The ranges of the gas and liquid superficial velocities are 0.1–10 m/s and 0.2–7 m/s, respectively. Bubble, bubbleslug transitional, slug, and frothy patterns are observed. The present data are compared with other experimental data reported in the literature, and a good agreement is obtained. It is also compared the present data with those obtained from reduced gravity experiments, in which the Bond number has the same order of magnitude. Some problems associated with the micro-scale modeling of microgravity two-phase flow are also discussed.

Copyright © 2003 by ASME

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