Design of Bow Shape to Decrease Green Water Impact Loading in Regular Waves

doi:2012.26.4.15

J. Ocean Eng. Technol. > Volume 26(4); 2012 > Article

J. Ocean Eng. Technol. 2012;26(4):15-22.
DOI: https://doi.org/10.5574/KSOE.2012.26.4.015

Ha Yoon-Jin,Lee Young-Gill,Jeong Kwang-Leol

Dept. of Naval Architecture and Ocean Engineering Graduate School Inha University,Dept. of Naval Architecture and Ocean Engineering Inha University,Dept. of Naval Architecture and Ocean Engineering Graduate School Inha University

규칙파 중 갑판침입수 충격하중 감소를 위한 선수형상 설계

하윤진,이영길,정광열

인하대학교 대학원 조선해양공학과,인하대학교 항공.조선.산업공학부 조선해양공학전공,인하대학교 대학원 조선해양공학과

Keywords: Green water load, Bow shape, Forecastle, Bow flare, Model test, FPSO

핵심용어: 갑판침입수 하중, 선수형상, 선수루, 선수 플레어, 모형 시험, 부유식 원유생산저장하역설비

Abstract

In this research, the relationship between the bow shape and green water phenomenon on the bow deck of an FPSO was studied using an experimental method. A 140,000 DWT FPSO was used as the objective hull form in the present research. The incident waves were regular types. The heights were 1.0 and 1.5 times the freeboard, and the length was equal in size to LBP. The wave heights and pressures on the deck were measured in experiments. Model tests were performed to determine the effects of bow flare angles, bow shapes, and a forecastle deck. The free heave and pitch conditions were applied to the models in these experiments. From the results of the model tests, an optimized bow shape was designed, which was found to decrease the green water impact loading. The results of this research could be used as fundamental data in the design of a bow shape.