中文摘要：

风轮运行过程中存在来流激励的振动响应,为了使计算结果更接近真实情况,应该在风轮的数值模拟研究中考虑振动情况。本文在水平轴风力机风轮表面动压模拟计算中施加了一阶对称挥舞振动。风轮模态参数通过单点激励多点响应的试验模态分析方法获得,根据动网格技术中网格变形的要求拟合一阶挥舞振动振型特征向量,定义的模态振型控制方程通过用户自定义函数施加于风轮模型,风轮的旋转通过滑移网格技术实现。大涡模拟计算结果表明：旌加模态振型后,风轮表面动压呈周期性变化,其脉动频率与叶片旋转频率不一致;随着尖速比和来流风速的增加,动压脉动频率均增加,且增加幅值逐渐放大,其中来流风速对动压脉动频率的影响更显著。

英文摘要：

Because of running rotor with vibration response caused by excition of incoming flow,vibration should be considered in numerical simulation for computation closer the fact.In this paper,the one order symmetric waving mode is applied to dynamic pressure simulation on surface of the horizontal axis wind turbine（HAWT） rotor.The rotor model parameters were obtained by experimental modal analysis（EMA） of single input multiple output（SIMO）,one order symmetric waving modal eigenvector was fitted according to the mesh deformation requirements of the dynamic mesh method,mode equation was applied to the rotor model by user define function,rotating of the rotor was achieved by sliding grid technique.The results of Large eddy simulation（LES） show that dynamic pressure on the rotor surface changed periodically with mode applied,and its frequency was inconsistent with the blade passing frequency（BPF）.Dynamic pressure frequency increased with the tip speed ratio and the wind speed while the increasing range was gradually enlarged,the wind speed showed more effect on the dynamic pressure frequency.