Modelling the Interaction between Ice and Ships
Physical modelling of the steady motion of a ship through level, unbroken ice has developed to the point where experiments can be carried out routinely. Nonetheless, there are in the literature very few illustrations of the degree to which estimates of performance derived from model tests in simulated ice correlate with full scale performance for the corresponding prototype.
This paper presents results of extensive level ice resistance model experiments at 1/48th and 1/36th scale for CCGS LOUIS S. ST. LAURENT in conjunction with full scale transitting performance of that ship in Goose Bay. Model test results at 1/36th scale for CCGS NORMAN McLEOD ROGERS are presented and compared with limited full scale data in the St. Lawrence River. Model test results for USCGC MACKINAW are presented with corresponding full scale results.
In the cases presented, model/full scale correlation is very good despite difficulties in correctly scaling down troublesome ice properties. Continued acquisition of full scale data and research into improving model ice properties is urged.
KeywordsCompressive Strength Full Scale Friction Factor Unconfined Compressive Strength Ship Speed
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