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Void Fraction Measurement in the Boundary Layer of Training Ship Seiun-Maru

[+] Author Affiliations
Hiroharu Kato, Akihiko Ikemoto

Toyo University, Kawagoe, Japan

Yasuyuki Toda

Osaka University, Suita, Osaka, Japan

Paper No. FEDSM2003-45650, pp. 697-703; 7 pages
doi:10.1115/FEDSM2003-45650
From:
  • ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
  • Volume 1: Fora, Parts A, B, C, and D
  • Honolulu, Hawaii, USA, July 6–10, 2003
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3696-7 | eISBN: 0-7918-3673-8
  • Copyright © 2003 by ASME

abstract

The full-scale experiment of microbubbles was performed using the training ship Seiun-Maru in 2001. The void fraction was successfully measured in the turbulent boundary layer under the bottom surface, using an optical void measurement device developed by the authors. The void distribution had a peak in the region 5–10mm from the hull surface. The device also could be used to measure the bubble size distribution. The number-averaged bubble diameter was about 0.5mm.

Copyright © 2003 by ASME

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