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Subsurface Ice Transport at a Transversally Towed Ship Model

[+] Author Affiliations
Li Zhou, Xu Bai

Jiangsu University of Science and Technology, Zhenjiang, China

Rüdiger U. Franz von Bock und Polach

Hamburg University of Technology, Hamburg, Germany

Paper No. OMAE2017-61841, pp. V008T07A004; 6 pages
doi:10.1115/OMAE2017-61841
From:
  • ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology
  • Trondheim, Norway, June 25–30, 2017
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5776-2
  • Copyright © 2017 by ASME

abstract

The subsurface transport of ice along the underwater body of a ship hull or a structure may cause damages to appendages. In order to investigate the conditions under which the ice accumulation occurs, a series of model tests was carried out in the ice basin of Aalto University. The used ship model was towed laterally against the ice with one side breaking level ice. The transport of broken ice floes broken off from the intact ice sheet has been has been monitored with underwater cameras. Both the model drift speed, respectively the ice drift speed, and the ice thickness are found to affect ice accumulation process. The Densimetric Froude number is introduced as measured to determine whether ice floes will accumulate on the upstream of the hull. It is found that ice accumulation is triggered at relatively low Froude number.

Copyright © 2017 by ASME
Topics: Ice , Ships

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