Hydrodynamic simulation for evaluating Magnus anti-rolling devices with varying angles of attack

Abstract

The effective operation of anti-rolling devices is important for ensuring ship safety, comfort, combat capability, and performance. Stabilizers based on the principle of the Magnus effect were investigated in this study. The hydrodynamic performance of a three-dimensional Magnus anti-rolling device at different angles of attack was examined using the improved delayed detached eddy simulation method based on shear stress transport. Subsequently, a convergence analysis was performed to verify the accuracy of the method. Moreover, the effects of the rotational speed, angle of attack, and incoming flow speed on the lift–drag characteristics and wake flow field of the Magnus anti-rolling device were analyzed. The results indicated that the optimal spin ratio maximized the lift–drag ratio. However, in certain cases, the angle of attack and spin ratio significantly influenced the streamwise and crosswise vortex structures in the cylinder wake. These results would be useful for the practical application of Magnus anti-rolling devices.