现代大型风力机运行在自然风场中，与均匀来流下相对简单的振动响应相比，环境湍流会使风力机翼型的涡激振动特征变得更加复杂。利用辨识得到的风力机翼型尾流振子模型，研究了湍流来流对翼型涡激振动响应的影响。相较于均匀来流，湍流来流使翼型频繁进入或离开锁频区间，振动响应表现出间歇性。采用相空间重构、递归图和复杂网络理论等非线性时间序列分析方法，对比了不同来流条件下翼型的振动特征。研究结果表明，复杂网络图可以直观反映时间序列的相空间拓扑结构，有效区分不同来流条件下响应的间歇性、准周期性，为研究湍流来流下风力机翼型的涡激振动提供了一个新的视角。

When a modern large-scale wind turbine operates in natural environment, ambient turbulence increases the complexity of vortex-induced vibration (VIV) of the wind turbine airfoil. This is clearly different from the relatively simple response observed in the case of uniform incoming flow. In this study, the effect of turbulent flow on the VIV response of a wind turbine airfoil is investigated with an identified wake oscillator model. Compared with the uniform incoming flow, inflow turbulence drives the airfoil to frequently enter or exit the frequency lock-in region, and thus the vibration response represents intermittency characteristics. Then, nonlinear time series analysis methods including phase space reconstruction, recurrence plots and complex network theory are used to compare the vibration response of the airfoil under different inflow conditions. It is shown that the complex network can directly reflect the phase space topology of time series, and effectively distinguish the intermittency and quasi-periodic characteristics of the vibration response under different inflow conditions. It is a new perspective to study the VIV response of wind turbine airfoils under turbulent flow.