摘要
海上浮式风力机受风、浪、流等外部载荷影响,运营期间经常处于偏航工况,给风力机基础运动响应和锚泊载荷带来重要影响。基于经典叶素动量理论及势流理论,建立海上浮式风力机水—气动力耦合分析模型,对在非定常风、不规则波浪联合作用下,风力机偏航时基础运动响应及锚泊载荷等进行分析。研究发现,额定风速工况下,风力机偏航对平台纵荡和纵摇运动影响较大,偏航30°时纵荡和纵摇平均值比偏航0°时分别下降20.68%和37.36%,垂荡运动响应受风力机偏航影响较小;锚泊载荷变化趋势与平台运动及锚链布置有关,平台纵荡对锚泊载荷影响较大,偏航30°时锚链#1有效张力平均值比偏航0°时下降12.98%。
Offshore floating wind turbines are affected by external loads such as wind, wave and current, and are often in yaw condition during operation, which has a significant impact on the movement response of the wind turbine foundation and the mooring load. Based on the classical blade element momentum theory and potential flow theory, a hydro-aerodynamic coupling analysis model of offshore floating wind turbine was established to analyze the foundation motion response and mooring load of the wind turbine when it yawed under the combined action of unsteady wind and irregular waves. The results show that the yaw of the wind turbine has a great influence on the surge and pitch motion of the platform under the rated wind speed condition. The average values of the surge and pitch decrease by 20.68% and 37.36% respectively when the yaw is 30° than those when the yaw is 0°. The yaw of the wind turbine has little influence on the response of the heave motion. The variation trend of mooring load is related to platform movement and anchor chain arrangement, and the platform swinging has a great influence on the mooring load. The average effective tension of chain #1 at yaw 30° is 12.98% lower than that at yaw 0°.
作者
白旭
杨翔宇
BAI Xu;YANG Xiangyu(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China;Institute of Structural Mechanics,Jiangsu University of Science and Technology,Zhenjiang 212003,China)
出处
《海洋工程》
CSCD
北大核心
2022年第1期74-81,共8页
The Ocean Engineering
基金
国家自然科学基金(51879125)
江苏省高等学校自然科学研究重大项目(18KJA580003)
江苏省“六大人才高峰”高层次人才项目(2018-KTHY-033)
江苏省研究生科研与实践创新计划项目(SJCX21_1782)。
关键词
海上浮式风力机
耦合分析
偏航
运动响应
系泊系统
offshore floating wind turbine
coupling analysis
yaw
motion response
mooring system
