研究两相流旋涡抽吸演化机理及其非线性冲击振动检测方法，具有重要的科研价值与工程应用意义。基于艾克曼(Ekman)层流动理论，研究旋涡抽吸过程中的两相流体粘滞耦合机理，得到Ekman抽吸过程的两相边界层动力学规律；基于水平集(LSM)拓扑变化方法，研究旋涡抽吸两相界面动态演变过程，并提出相应的相界面形态实时追踪方法；采用分形(Fractal)与粒子图像测速(PIV)相结合的方法研究汇流微涡团聚合与耗散机理，得到旋涡临界穿越状态动力学特性；基于振动波流场耦合理论，建立考虑液固耦合的有限长薄壁管壳动力学模型，并求解各阶周向模态下的受迫振动位移响应。在此基础上，给出有限长圆柱薄壁管壳在旋涡冲击作用下的振动响应计算方法及其算例，利用希尔伯特-黄变换(HHT)方法对旋涡贯穿突变振动瞬态特征进行分析，实现在不可见条件下的旋涡抽吸状态在线检测与识别。

Research on two-phase sink vortex suction evolution mechanism and the nonlinear shock vibration detection method have important scientific value and engineering application significance. Based on the Ekman layer theory, two-phase fluid viscous coupling mechanism of vortex formation process is studied, and the two-phase boundary layer dynamic regulars of Ekman suction are obtained. According to level set method (LSM) topology transformation, the two-phase interface dynamical evolution process of vortex suction is researched, and the corresponding real-time tracing method for phase interface is put forward. Combining the fractal and particle image velocimetry (PIV) method to research the convergence and dissipation mechanism of micro sink vortex group, the dynamic attributes of the vortex critical transition status is obtained. Based on the vibration fluid field coupling theory, a finite length thin shell dynamic model considering the fluid-solid coupling is established to solute the forced vibration responses under different circumferential modals. Based on the above works, the Hilbert-Huang transform (HHT) is adopted to analyze the instant vibration distortion features of vortex suction, and implement the on-line detection and recognition of vortex formation process under invisible conditions.