Evaluation and analysis of ice breaking capacity of a double-acting polar ship
Ice breaking capacity is an important index to measure the navigation performance of polar ships.Based on the numerical simulation theory of continuous ice breaking resistance based on preset ice grid technology,according to the different balance modes of continuous ice breaking resistance and net thrust,this paper proposes two numerical evaluation methods of polar ship ice breaking capacity,static and dynamic.Taking a double-acting polar tanker as the research object,the static and dynamic methods are used to evaluate its ice breaking capacity,and the results are compared with the corres-ponding ice tank model test results.The research results show that the maximum ice breaking thickness corresponding to 1 kn speed obtained by the static and dynamic ice breaking capacity evaluation methods is close to the model test results.The evaluation results of the two methods show that the ice breaking capacity of the double-acting polar tanker in the bow direc-tion is stronger than that in the stern direction,which is consistent with the actual situation.The feasibility of the two ice breaking capacity evaluation methods is verified,which can provide an effective tool for the performance prediction of the polar ships in the initial design stage.
NETL
NSTL
万方数据
