| The narrowing of Arctic ice sheet coverage has made commercial activities on the Arctic routes heavier.In recent decades,research on ships in ice areas has gradually increased.Due to the special geographical location and natural conditions of the Arctic route,the polar transport ships have to sail in the ice-filled route for a long time.The research about the resistance of ships in ice floes has become particularly important.In this paper,by adopting artificial synthetic model ice,we carry out ship model resistance test in the towing tank of Dalian University of Technology.The experiment was designed to explore the factors affecting the resistance of the ship in the ice floes and the probability distribution characteristics of the resistance.In this experiment,polypropylene was utilized as the main material of artificial synthetic model ice.In consideration of the measured sea ice size and shape distribution parameters in the polar region,the proportion of model ice with different sizes and shapes was designed.In this test,the influence of the shape of the model ice on the resistance was considered initially.Thus this provides some reference points for the research of the ships resistance in the ice floes in the future.According to the video collected,the behavior of ice floes was studied,and the relationships between the conditions(mainly speed,ice concentration),ice floe behavior,and resistance waere studied in conjunction with the resistance data.Subsequently,the distribution of ice floe resistance under different working conditions was obtained.The results show that the resistance distribution measured in the test conforms to the Rayleigh distribution,which exhibits a good fitting results. |
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