On the Magnus Rotating Roll Stabilizer; Numerical and Experimental Studies

Abstract

Magnus rotating roll stabilizer is a roll reduction device that it generates lifting force installed at the bilge of ship hull as an alternative of anti- rolling system. In this study, hydrodynamic characteristics in terms of a ship’s roll-heave motions in a regular beam sea and anti-rolling effects at low/medium speed in the varied rotation speeds are investigated in details. For practical purposes, the calculation model of the anti-rolling force is established with the vertical velocity components caused by ship roll motion into consideration. Magnus lift force produced by the rotating cylinders in the fluid field were calculated by the numerical simulation and towing experiment. The simulation results for two-dimensional rotating cylinders and three-dimensional ship-rotor cases show that Magnus rotating roll stabilizer is more suitable and effective with high performance for ship roll stabilization at low/medium speed.