선미파, 선미사파를 받는 선박의 과도 운동 추정에 대한 연구

Abstract

Recently, researches to find rational mathematical model for prediction of capsizing have been progressed by ITTC. Lee(1997) developed a mathematical model which describes 6 DOF transient motions, such as capsizing, of a ship in regular waves. In this study, amathematical model for prediction of capsizing in following and quartering seas is developed based on Lee’s model. And factors affecting prediction of capsizing are analyzed through comparing simulation results with experimental results. Present simulation results are compared with ITTC bench mark test results. In rolling tests with beam seas and free runs withstern quartering seas, capsizing events are predicted well. But calculated roll angle is larger than experimental one. It is found that nonlinear manoeuvring coefficients don’t affect the prediction of capsizing events.