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Flow Morphologies and Bubble Dynamics in Microchannels With Entrenched Micro-Pin Fins

[+] Author Affiliations
Santosh Krishnamurthy, Yoav Peles

Rensselaer Polytechnic Institute, Troy, NY

Paper No. ESDA2008-59133, pp. 295-302; 8 pages
doi:10.1115/ESDA2008-59133
From:
  • ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis
  • Volume 4: Fatigue and Fracture; Fluids Engineering; Heat Transfer; Mechatronics; Micro and Nano Technology; Optical Engineering; Robotics; Systems Engineering; Industrial Applications
  • Haifa, Israel, July 7–9, 2008
  • Conference Sponsors: International
  • ISBN: 978-0-7918-4838-8 | eISBN: 0-7918-3827-7
  • Copyright © 2008 by ASME

abstract

Flow boiling of HFE 7000 on micro pin fins entrenched inside microchannels was experimentally studied for G = 350 kg/m2 s to G = 827 kg/m2 s and wall heat fluxes from 10 W/cm2 to 110 W/cm2 . Bubbly, multiple, and wavy-annular flow patterns were observed. The interaction of the bubble with the pin fins during nucleate boiling is detailed.

Copyright © 2008 by ASME

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