水动力相互作用对MOB动力响应的影响研究  

Research on dynamic response of MOB by hydrodynamic interaction

作　　者：张波[1] 陈林 董明海[1] 王化明 ZHANG Bo;CHEN Lin;DONG Ming-hai;WANG Hua-ming(Zhejiang International Maritime College,Zhoushan 316021,China;Donghai Science and Technology College,Zhejiang Ocean University,Zhoushan 316000,China;School of Naval Architecture and Maritime,Zhejiang Ocean University,Zhoushan 316022,China)

机构地区：[1]浙江国际海运职业技术学院,浙江舟山316021 [2]浙江海洋大学东海科学技术学院,浙江舟山316022 [3]浙江海洋大学船舶与海运学院,浙江舟山316022

出　　处：《舰船科学技术》2022年第17期83-89,共7页Ship Science and Technology

基　　金：舟山市科技计划资助项目(2019C31062);浙江省教育厅一般项目(Y202147894);国家自然科学基金资助项目(No.51809236)。

摘　　要：MOB是一种采用半潜式下浮体形式的超大型海上浮式结构物。本文结合势流理论和多刚体计算理论建立MOB动力响应分析的数学模型,以7模块MOB为研究对象,采用RMFC模型编制计算程序求解频域下的多浮体运动方程。对比分析不考虑模块间水动力相互影响和考虑模块间水动力相互影响2种计算方法下各个模块的六自由度运动响应和连接器载荷响应幅值,并做短期预报。计算结果表明模块间距离越近,水动力相互作用越大。模块间水动力相互作用对浮体运动和连接器载荷值都具有一定影响。本文的计算结果可以为带有连接器的多浮体水动力计算和多浮体水动力相互作用分析提供参考。MOB is a kind of very large floating structure with semi-submersible floating body. In this paper, a mathematical model for dynamic response analysis of MOB is established based on potential flow theory and multi rigid body calculation theory. The 7-module MOB is taken as the research object, and the RMFC model is used to develop the calculation program of MOB’s response of motion and connector load. The results calculated by two different methods are compared,that is, considering and without considering the hydrodynamic interaction between modules. The floating bodies’ motion and connector loads are assessed, and short prediction is done. The numerical results show that the closer the distance between modules is, the more obvious the hydrodynamic interaction is. The interaction between floating modules has a certain influence on the calculation results. The results of this paper can provide a reference for the hydrodynamic response calculation and hydrodynamic interaction analysis of multiple floating bodies with connectors.

关 键 词：MOB 水动力相互作用 动力响应 连接器载荷 

分 类 号：U661.43[交通运输工程—船舶及航道工程]