In order to simulate the movement of ice more accurately, this paper use overlapping grid methods combined with DFBI model to calculate the mutual interaction between an unconstrained ice cube and propeller, then the movement and force of the ice under the influence of propeller suction effect are analyzed. In the computational process, different working conditions are carried out by altering propeller rotation speed and ice-propeller radical distance. According to the computational results, when ice move near to the propeller disk, the force peak value in 3 directions will appear; and when the flow speed remain constant, the bigger of advance velocity coefficient, the higher probability of ice-propeller crashing.

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