项目名称： 侧风对风力机叶片结构动态响应影响规律和调控机理研究

项目编号： No.51466012

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 能源与动力工程

项目作者： 马剑龙

作者单位： 内蒙古工业大学

项目金额： 50万元

中文摘要： 自然界中风向的多变，会对风力机叶片产生偏侧风激励作用，是造成风力机共振、颤振及疲劳损伤最为重要的原因之一。但是，至今偏侧风对叶片结构动态响应的影响规律和调控机理仍未得到完整的解释和原理性描述。偏侧风对风力机的主要激励作用来源于侧风引起叶片周围气动场的不对称性及湍流和涡旋的增强。本项目拟通过三维高频PIV监测流场变化，获得侧风条件下叶片周围气动场的不对称性、湍流和涡旋随偏侧风风向和速度、叶片转速的变化特性。同时，通过无线旋转遥测设备监测叶片结构动态响应随流场变化的表现。在上述两项工作的基础上，以流场特征变化为桥梁，寻找侧风因素变化与结构动态响应间的关联性和关联机理，并以此为理论基础从侧风激励和风力机本体构造两方面探索风力机抗击冲击载荷和提高疲劳损伤能力的有效途径。相关研究成果将为风力机减振措施的探索提供有力的理论支撑，同时可为风力机流固耦合主控方程有效解耦方法的发现提供可靠的实验数据支持。

中文关键词： 侧风；风力机叶片；结构动态响应；影响规律；调控机理

英文摘要： The crosswind incentive is one of the most important reasons of the resonance, the flutter and the fatigue damage of the blades since the crosswind incentive. However, so far the rule and the regulatory mechanism of the effect of the crosswind factor on the structural dynamic response of the blade had not yet to be fully explained in principle. The main incentives of the unilateral wind on the wind turbine come from the enhancement effects of the asymmetry of the aerodynamic field, the turbulence and the eddy around the blades. The project intends to obtain the dynamic characteristic of the change of the asymmetry of the aerodynamic field, the turbulence and the eddy with the direction and the speed of the wind, the rotating speed of the blade by using the PIV to monitor the change of the flow field and simultaneously monitor the change of the structural dynamic response of the blades with the flow field by using the rotating telemetry equipment. Look for the relevance and the associated mechanisms between the crosswind factor and the structural dynamic response by using the change of the flow field as a bridge, and as this theoretical basis to explore the effective ways to fight the shock loads and improve the fatigue damage of the wind turbine. The related research can provide strong theoretical support for exploring of the damping measures. Meanwhile, it can provide the reliable experimental data for studying the effective decoupling method of the master equation about the fluid-structure interaction of the wind turbine.

英文关键词： crosswind factor;wind turbine blade;structural dynamic response;influence law;regulatory mechanism