摘要
建立了风力发电机组“叶片-塔筒-基础-地基”耦联一体化系统模型,对流固耦合作用下结构的气动效应及损伤机理开展了研究.采用CFD/CSM双向流固耦合求解方法,实现了风场气流与叶片结构的相互作用,并将其与机组支撑体系的塔筒和基础耦联,研究不同风速下流体域特性、叶片气动效应、结构损伤发展规律及破坏模式.结果表明,空气可有效驱动风机叶片,在流固耦合作用下,叶片的气动效应及负压区随风速而扩大.极端风速时尖端出现气动弹性失稳现象,但由于结构阻尼逐渐趋于稳定;风机迎风侧混凝土基础环首先出现损伤,并逐渐顺钢环边缘向两侧延展,最终形成贯穿带.
A wind turbine generator model of the"blade-turbine-foundation-ground"coupling system was established to study the aerodynamic effect and damage mechanism of the structure under fluid-solid coupling.The CFD/CSM bidirectional fluid-solid coupling method was used to realize the interaction between wind field airflow and blade structure coupling with the tower structure and foundation of the unit.The blade aerodynamic effects,structural damage development law and failure mode under different wind speeds were researched.The results show that the air can effectively drive the fan blades.Under the action of fluid-solid coupling,the aerodynamic effect and negative pressure area of the blades expand with the wind speed.Aeroelastic instability occurs at the tip under extreme wind speed,but the structural damping tends to be stable.The concrete foundation ring on the windward side of the fan is first damaged,and gradually extends along the edge of the steel ring to both sides to form a penetrating belt.
作者
许新勇
许文杰
张程
徐昕昀
张建伟
XU Xinyong;XU Wenjie;ZHANG Cheng;XU Xinyun;ZHANG Jianwei(School of Water Conservancy,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Collaborative Innovation Center of Water Resources Efficient Utilization and Protection Engineering,Zhengzhou 450046,China;Henan Provincial Hydraulic Structure Safety Engineering Research Center,Zhengzhou 450046,China;Changjiang River Scientific Research Institute of Changjiang Water Resources Commission,Wuhan 430000,China;Three Gorges Pearl River Power Generation Co.Ltd,Guangzhou 510000,China)
出处
《应用基础与工程科学学报》
EI
CSCD
北大核心
2023年第5期1125-1139,共15页
Journal of Basic Science and Engineering
基金
国家自然科学基金项目(51979109,51679091)
河南省重点研发与推广项目(192102310015)
河南省科技创新人才计划项目(174200510020)
河南省高校科技创新团队支持计划项目(19IRTSTHN030)。
关键词
风电机组
流固耦合
CSM/CFD
动力损伤演化
气动效应
双向数据交换
损伤机理
wind turbines
fluid-solid coupling
CSM
CFD
dynamic damage evolution
aerodynamic effect
bidirectional data exchange
damage mechanism
作者简介
许新勇(1978-)男,博士,副教授.E-mail:xuxinyong@ncwu.edu.cn。
