Subsurface ice transport at a transversally towed ship model

Journal
Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE  
First published in
Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE  
Number in series
8
Citation
International Conference on Offshore Mechanics and Arctic Engineering (OMAE 2017)
Contribution to Conference
ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2017  
Publisher DOI
10.1115/OMAE2017-61841
Scopus ID
2-s2.0-85032228546
Publisher
The American Society of Mechanical Engineers
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.
DDC Class
600: Technik