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TECHNICAL PAPERS

Physical Model Experiments to Assess the Hydrodynamic Interaction Between Floating Glacial Ice Masses and a Transiting Tanker

[+] Author and Article Information
R. Gagnon

Institute for Ocean Technology, National Research Council of Canada, St. John’s Newfoundland, A1B 3T5, Canada

J. Offshore Mech. Arct. Eng 126(4), 297-309 (Mar 07, 2005) (13 pages) doi:10.1115/1.1835986 History: Received May 01, 2003; Revised December 01, 2003; Online March 07, 2005
Copyright © 2004 by ASME
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References

Figures

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An illustration showing the three ice mass model shapes
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A close up view of the large spherical ice mass model with the top shell removed. The inner construction shows the ABS tubes with light-colored foam inserts that give the correct overall density when the sphere is flooded with water.
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A view of all three medium sized ice mass models with the large sphere in the background
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A photograph of a typical test using the small spherical ice mass model. The array of retro-reflective targets used by the video tracking system is visible on top of the model.
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Tanker model towing arrangement
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Ice mass model positioning system
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Sway and surge data from a typical test using the small pyramid-shaped ice mass with a model tanker track separation of 1.375 m and speed of 1.24 m/s. The tanker fore perpendicular position (FP) corresponds to the tanker model’s bow position along the tow tank axis relative to the initial position of the model ice mass along the tow tank axis.
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Maximum surge versus maximum sway data from tests using the spherical models, without waves
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Maximum surge versus maximum sway data from tests using the cylindrical models, without waves
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Maximum surge versus maximum sway data from tests using the pyramid models, without waves
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Maximum sway versus tanker speed (large sphere) for different ice mass/tanker track separations (D). Wave period (P) and height (H) are given for the tests in waves.
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Maximum sway versus tanker speed (medium sphere)
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Maximum sway versus tanker speed (small sphere)
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Maximum sway versus tanker speed (all spheres)
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Sway speed versus tanker speed (large sphere) for different ice mass/tanker track separations (D). Wave period (P) and height (H) are given for the tests in waves.
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Sway speed versus tanker speed (medium sphere)
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Sway speed versus tanker speed (small sphere)
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Sway speed versus tanker speed (all spheres)

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