Wave-Induced Motions of a Floating Body in a Harbour

J. Ocean Eng. Technol. 2006;20(2):36-40.

Lee Ho-Young;Kwak Young-Ki;Park Jong-Hwan;

Major in Naval Architecture and Marine System Engineering, Mokpo National University;Major in Naval Architecture and Marine System Engineering, Mokpo National University;Major in Naval Architecture and Marine System Engineering, Mokpo National University;

파랑에 의한 항만 내 부유체의 운동

이호영;곽영기;박종환;

목포대학교 선박해양시스템;목포대학교 선박해양시스템;목포대학교 선박해양시스템;

Keywords: Velocity potential continuation method, Boundary element method, Harbour, Motion response, Floating body

핵심용어: 속도포텐셜 접속법, 경계 요소법, 항만, 운동응답, 부유체

Abstract

As large waves enter a harbor, during their propagation, the motions a floating body are large and if may even be damaged by waves. This phenomenon may be caused by harbor resonance, resulting from large motion at low wave frequency, which is close to the natural frequency of a vessel. In order to calculate the motion of a floating body in a harbor, it is necessary to use the wave forces containing the body-harbor interference. The simulation program to predict the motions of a floating body by waves in a harbor is developed, and this program is based on the method of velocity potential contiuation method proposed by Ijima and Yoshida The calculated results are shown by the variation of wave frequency, wave angle, and the position of a floating body.