二阶波浪力对15MW漂浮式风力机动态响应影响研究Effects of second-order hydrodynamics on the dynamic responses of a semisubmersible-type 15 MW wind turbine
高伟;杨阳;苗继春;张勋奎;
摘要(Abstract):
为研究二阶波浪力对15 MW漂浮式风力机动态响应的影响程度,文章以IEA 15 MW风力机和VolturnUS-S平台为研究对象,通过WAMIT计算了平台和频及差频二阶传递函数,采用OpenFAST计算了常规运行工况和极端停机工况下,忽略及考虑二阶波浪力时的平台运动和塔基弯矩。计算结果表明:在运行工况下,平台运动主要受到气动载荷影响,但忽略二阶波浪力将导致塔基面内弯矩最大值偏大9.3%;二阶波浪力对极端停机工况下的平台运动具有显著影响,其可增大纵摇固有频率对应幅值达147.8%;忽略二阶波浪力,也会导致塔基面外弯矩最大值和标准差计算结果偏低10%以上,说明塔架结构强度校核及疲劳分析均应考虑二阶波浪力。
关键词(KeyWords): 漂浮式平台;15MW风力机;二阶波浪力;动态响应
基金项目(Foundation): 国家自然科学基金项目(52101317);; 三亚崖州湾科技城管理局2020年度科技计划项目(SKJC-2020-01-005)
作者(Authors): 高伟;杨阳;苗继春;张勋奎;
DOI: 10.13941/j.cnki.21-1469/tk.2023.03.003
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