尾涡-边界层（涡）动静干涉是叶轮机械常见的非定常流动现象，深入认识其流动机理对于提高叶轮机械气动热力设计水平和流动控制技术具有重要意义。本课题采用数值模拟和实验相结合的手段，对运动圆柱尾迹和壁面射流共同作用下的平板边界层流场进行研究。通过热线风速仪、TR-PIV和Fast-PSP同步测量获得特征点处的速度脉动、特征平面内的速度场和平板壁面压力场，结合互相关分析和相干谱分析，获得旋涡和相干结构的非定常运动特征。研究将分别考察上游尾涡通过频率、尾迹宽度、射流出射角和出流速度等因素对流场结构的影响，同时与数值模拟得到的流场进行对比分析，揭示流场特性参数的变化规律。对TR-PIV和Fast-PSP测量获得的速度场和压力场分别进行POD分解，结合条件相位平均技术对流场进行重构，再现旋涡和边界层相干结构的时空演化规律，揭示旋涡和边界层的相互作用机理。通过DMD分解，揭示旋涡和边界层流场的不稳定特性。

The interaction between rotating wake vortex and boundary layer (vortex) is a common unsteady flow phenomenon in turbomachines. Deeply understanding its fluid mechanism is of great significance to improving our aerothermal design level and flow control technology. Both numerical and experimental methods are employed to investigate the plate boundary layer interrupted by upstream moving cylinder wake and wall jet. Hot-wire anemometry, TR-PIV and Fast-PSP are used synchronously to capture the velocity fluctuations, velocity flow fields and wall pressure fluctuations, respectively. The unsteady characteristics of vortex and coherent structures are obtained with cross-correlation and coherence analysis. The influence of different effects on flow field are examined, such as wake vortex passing frequency, cylinder wake width, wall jet angle and wall jet velocity. Comparisons are made between the experimental and numerical results to further disclose the variation of the flow field features. Proper orthogonal decomposition is applied to the velocity fields and pressure fluctuation fields, and the flow fields are reconstructed with conditional phase averaging, which enables the representation of the spatial-temporal characteristics of vortex and coherent structures. Furthermore, dynamic mode decomposition is carried out to disclose the instabilities of the vortex and boundary layer.