A Study on the Approximation Method of the Hydrodynamic Forces on the VLFS

J. Ocean Eng. Technol. 1997;11(1):74-83.

초대형 부유식 해양구조물에 작용하는 유체력 추정에 관한 근사계산법의 연구

박노식

울산대학교 조선해양공학부

Keywords: VLFS(Very Large Floating Structure), Hydrodynamic Interaction, Free Surface Effects, Diffraction Effects

핵심용어: 초대형 부유식 해양구조물, 유체역학적 상호간섭, 자유표면효과, 산란파영향

Abstract

This study is to develop a practical calculation method of hydrodynamic force and motion response on very large floating structures of multiple legs. To investigate the effecr of hydrodynamic interfaction and of free surface on the reaponses of very large floating structures in regular waves, four kind of models are considered, ie. 1, 4, 64, 21248 column with footing. Based upon the results of this study, it is found that the middle parts of very large floating structures have small diffration effects. Therefore only out side parts are used to determine the hydrodynamic forcea for taking into account the effects of interaction.