半潜式采油平台波动压力分析  

Dynamic wave pressure distributions of semi-submersible

作　　者：张志强[1,2] 王科[2] 贺大川[2] 施鹏飞[2] 陈彧超 程小明[3] ZHANG Zhiqiang WANG Ke HE Dachuan SHI Pengfei CHEN Yuchao CHENG Xiaoming(State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian,116024,China State Key Laboratory of Structural Analysis for Industrial Equipment,Department of Engineering Mechanics,Dalian University of Technology, Dalian, 116024,China China Ship Scientific Research Center, Wuxi, 214082, China)

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [2]大连理工大学工业装备与结构分析国家重点实验室工程力学系,辽宁大连116024 [3]中国船舶科学研究中心,江苏无锡214082

出　　处：《哈尔滨工程大学学报》2016年第9期1190-1196,共7页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51379037);国家重点基础研究发展计划(2013CB036101)

摘　　要：本研究依据波浪辐射和绕射理论,采用高阶边界元方法并考虑了半潜式采油平台几何形状的对称性,得到了特征波向和波浪频率下半潜平台湿表面的流体波动压力分布。研究中首先将半潜平台有限元建模、运动参数计算以及边界元数据输出统一成一个有机整体,并在半潜平台的复杂直角边和角点处发展了双重和多重节点重置的新方法,该方法极大的提高了波浪压力分析的准确性和高频波浪计算的数值稳定性。Based on wave radiation and diffraction theory,in this paper,we apply a higher-order boundary element method（ HOBEM） and consider symmetry to calculate the wave pressure distributions of Semi-submersibles for definite wave directions and frequencies. First,we used an integral system containing an FEM Semi-submersible model,calculated the hydrodynamic motion coefficients,and exported the data for BEM analysis. We then applied a newly developed multiple and double node relocation method coupled with the FEM / BEM data transformation along the complicated sharp edges and corners of a Semi-submersible. This algorithm significantly improves the accuracy of wave pressure analysis and the numerical stability of high-frequency wave calculations.

关 键 词：半潜平台 波浪辐射 波浪绕射 波浪压力 高阶边界元方法 双重和多重节点配置 

分 类 号：TV139.2[水利工程—水力学及河流动力学]