【摘要】 在空气动力学国家重点实验室1m×1m水洞中，通过激光诱导荧光技术，对翼型、后掠机翼和旋成体模型的绕流结构及尾流结构进行了试验研究。本文从试验角度出发探索了典型气动构型的绕流特性与流动机理问题，直观地展示了典型气动构型模型尾流以及边界层流动在层流、转捩和湍流状态下流动结构形成及演化过程。通过典型气动构型模型的绕流结构观测与流动特性解析，揭示了不同复杂流动沿流向的空间演化规律和流动剖面结构特点，验证了水洞应用激光诱导荧光技术进行多尺度绕流结构流动显示的有效性。更多还原

【Abstract】 In the 1m×1m water tunnel of state key laboratory of aerodynamics, laser-induced fluorescence technology is used to conduct experimental research on the flow structure and wake structure of airfoil, swept wing and rotor model. This paper explores the flow characteristics and flow mechanism of the typical aerodynamic configuration from the experimental point of view, and visually demonstrates the laminar flow, transition and turbulence structure of the boundary layer of the typical aerodynamic configuration model, as well as the wake velocity pulsation, vortex formation and evolution process.Through the observation and analysis of the flow characteristics of the typical aerodynamic configuration model, the spatial evolution law of different complex flows along the flow direction and the structural characteristics of the flow profile are revealed, the effectiveness of the laser-induced fluorescence technology in the water tunnel to display multi-scale flow structure is verified.更多还原