摘要
本文研究了无侧板单立柱Spar风电平台在不同约化速度(U_(r))下的涡激运动特征。基于计算流体动力学进行数值模拟,采用剪应力运输(Shear Stress Transport,SST)k-ω湍流模型模拟漩涡脱落,通过自编动力积分程序和重叠网格实现涡激运动的实时流固耦合,对U_(r)为2~14时的平台涡激运动响应进行计算,分析涡激运动模式随U_(r)演变的规律,定性分析物理模型试验不满足雷诺数(Re)相似对涡激运动结果的影响。结果显示:平台分别在U_(r)=3.5~4.5和U_(r)=5~10时发生了纵荡和横荡锁频;物理模型试验不满足Re相似,高估了平台所受的黏性力。通过数值计算得出的平台涡激运动特性可为Spar风电平台相关设计分析与试验提供参考。
The characteristics of vortex-induced motions(VIM)of a Spar-type wind turbine without helical strakes are studied under the conditions of different reduced velocities(U_(r)).Based on the computation of fluid dynamics,the vortex shedding is simulated using the k-ω turbulent model of shear stress transport(SST),and the real-time flow-solid coupling of the vortex-induced motions is realized by self-compiled dynamic integration program and overlapping grid method.Through the calculation of Spar's VIM response at reduced velocity U_(r)=2-14,the change law of the VIM mode with reduced velocity are studied,and the effect of the dissatisfying of Reynolds number similarity of the physical model tests on the calculation results of VIM is analyzed qualitatively.The results show that the Spar-type wind turbine experiences a surge and a sway frequency lock-in at U_(r)=3.5-4.5 and U_(r)=5-10,respectively;and that the dissatisfying of Reynolds number similarity of the physical model tests overestimates the viscous force suffered by the Spar.The VIM characteristics of the Spar-type wind turbine obtained by the numerical calculations can provide a reference for the design and test of the Spar-type floating wind turbine.
作者
宋佳奇
王俊荣
王德志
康信龙
SONG Jia-qi;WANG Jun-rong;WANG De-zhi;KANG Xin-long(College of Engineering, Ocean University of China, Qingdao 266100, China;Shandong Key Laboratory of Ocean Engineering, Qingdao 266100, China)
出处
《海岸工程》
2022年第1期37-47,共11页
Coastal Engineering
基金
国家自然科学基金项目--深水浮式结构物与内孤立波流固耦合作用及载荷相应机理研究(51879287)和深海浮体/系缆/立管运动的耦合动力分析方法(51490675)。
关键词
Spar风电平台
涡激运动
流固耦合
浮式风电平台
Spar-type wind turbine
vortex-induced motion
flow-solid coupling
floating wind turbine
