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Influence of Added Mass Effect on Rotation of a Drifting Iceberg in Non-Stationary Current

[+] Author Affiliations
Aleksey Marchenko

The University Centre in Svalbard, Longyearbyen, Svalbard, Norway

Paper No. OMAE2014-23868, pp. V010T07A030; 7 pages
doi:10.1115/OMAE2014-23868
From:
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 10: Polar and Arctic Science and Technology
  • San Francisco, California, USA, June 8–13, 2014
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4556-1
  • Copyright © 2014 by ASME

abstract

Observations of drifting icebergs by the ice trackers installed at their surface show their rotation relatively vertical axis. Iceberg rotation can influence drift characteristics and potentially dangerous for the iceberg towing. In the present paper 2D motion of floating icebergs in the presence of wind drag and unsteady water flow is considered. The water flow is assumed two dimensional and with uniform vertical profile. The direction and magnitude of the current speed are varying with the time. Temporal variability of the flow is associated with semidiurnal tidal. The inertial properties of an iceberg are characterised by three components of the added mass tensor. The iceberg motion is described by the Kirchoff equations written in the frame of reference sliding with the fluid. The rotation of cylindrical icebergs with elliptic horizontal cross-sections is investigated depending on the wind and fluid flow characteristics.

Copyright © 2014 by ASME
Topics: Rotation , Icebergs

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