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On the Wall Drag and the Form Loss for Dispersed Flow

[+] Author Affiliations
Byoung Jae Kim, Seong Wook Lee, Kyung Doo Kim

Korea Atomic Energy Research Institute, Daejeon, South Korea

Jungwoo Kim

Seoul National University of Science & Technology, Daejeon, South Korea

Paper No. ICONE22-30051, pp. V02AT09A007; 6 pages
doi:10.1115/ICONE22-30051
From:
  • 2014 22nd International Conference on Nuclear Engineering
  • Volume 2A: Thermal Hydraulics
  • Prague, Czech Republic, July 7–11, 2014
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-4590-5
  • Copyright © 2014 by ASME

abstract

This paper demonstrates the validity of newly-developed the wall drag and form loss partitioning methods for dispersed flow. The wall drag partitioning method is proposed based on the equation of a solid/fluid particle motion. The bubble is faster than the water in a contraction while the former is slower than the latter in an expansion. The droplet is slower than the gas in a contraction while the former is faster than the latter in an expansion. In addition, this study shows that the existing form loss model predicts incorrectly the dispersed phase velocity. A new form loss computation method is proposed.

Copyright © 2014 by ASME

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