半潜平台定位推进器激振力仿真方法及应用研究  

Simulation method and applied research of excitation force of semi-submersible platform positioning propeller

作　　者：韩华伟 张媛[1] 王树青[1] 徐芹亮 王娜 HAN Huawei;ZHANG Yuan;WANG Shuqing;XU Qinliang;WANG Na(Shandong Provincial Key Laboratory of Ocean Engineering,Ocean University of China,Qingdao 266100,China;Yantai CIMC Raffles Offshore Limited,Yantai 264670,China)

机构地区：[1]中国海洋大学山东省海洋工程重点实验室,山东青岛266100 [2]烟台中集来福士海洋工程有限公司,山东烟台264670

出　　处：《哈尔滨工程大学学报》2020年第1期108-115,共8页Journal of Harbin Engineering University

基　　金：国家杰出青年科学基金(51625902);工信部第七代超深水钻井平台(船)创新专项(工信部联装[2016]24);工信部半潜式支持平台专项(工信部联装[2016]546);山东省泰山学者计划(TS201511016)

摘　　要：为了开展准确预报半潜平台结构在推进器激励下响应分析,本文提出了一种基于计算流体动力学的半潜式平台推进器激振力的工程化模拟方法,采用Fluent建立定位推进器流体激振力计算模型模拟输出了定位推进器的激振力,同时进行了实船测试获得定位推进器基座处的振动响应,在ABAQUS软件中建立平台全船结构有限元模型,应用数值仿真和实测2种激振力作为平台激励输入下的甲板结构振动响应进行研究,得到结构的振动响应分布规律,验证了数值计算结果的准确性。研究结果验证了CFD数值计算结果的准确性,可在推进器设备方案定型后给出结构振动校核所需载荷,同时得到平台结构在推进器激励下的响应规律,为平台结构的减振方案设计提供帮助。To accurately predict semi-submersible platform structure response under the propeller excitation,an engineering simulation method for the excitation force of semi-submersible platform propeller is proposed in this paper based on computational fluid dynamics(CFD).Fluent was used to establish the calculation model of the exciting force of the positioning propeller,and the exciting force of the positioning thruster was simulated and outputted.The real ship test was carried,and the vibration response at the base of the positioning thruster was obtained.The finite-element model of the platform full ship structure was established in the ABAQUS software.Two exciting forces of the numerical simulation and the real measurement were used as the platform excitation input,and the vibration responses of the deck structure were studied under these two forces.The distribution law of the structure vibration response was obtained,proving the accuracy of the simulation results.The accuracy of the CFD numerical calculation results was verified by research results.The proposed method can provide the load required by structural vibration check after the propeller equipment scheme is finalized.Moreover,the response law of the platform structure under the propeller excitation can be obtained,which can provide guidance for the design scheme of platform structure vibration reduction.

关 键 词：半潜式平台 定位推进器 计算流体动力学 有限元模拟 结构分析 机械振动 激振力 动态响应 

分 类 号：TU317[建筑科学—结构工程]