为了探究汽轮机中湿蒸汽级的水滴沉积过程，以某型十五级汽轮机为研究对象，设计了第十三级动叶除湿沟槽结构，并基于非平衡态凝结模型，针对在不同运行负荷下的汽轮机除湿级开展了除湿性能与水滴运动特性分析对比研究。研究结果表明:一次水滴的运动轨迹主要由气流力与湍流扩散控制，而二次水滴运动轨迹则主要受惯性影响。第十三级动叶的压力侧与吸力侧沟槽均能有效捕获叶栅通道中的液滴。此外，在不同运行负荷下，经过第十三级动叶除湿后的汽轮机末级出口湿度相较于除湿前均显著降低。其中额定工况下，第十三级动叶除湿沟槽的二次水滴分离率达到50.7%，出口湿度相对降低率达到20.6%。

In order to investigate the water droplet deposition process of the wet steam stage in the steam turbine, the dehumidification groove structure of the 13th rotating blades was designed with a 15-stage steam turbine as the research object. Based on the non-equilibrium condensation model, the water droplet movement characteristics and dehumidification performance of the dehumidification stage of the steam turbine under different operating state were analyzed and compared. The results show that the motion trajectory of fine droplets is mainly controlled by airflow force and turbulent diffusion, while the motion trajectory of coarse water droplets is mainly affected by inertia. In the 13th blade, both the pressure side and suction side dehumidification grooves can effectively capture droplets in the cascade. In addition, under different operating state, the humidity at the exit of the last stage of the steam turbine after the 13th rotor blade dehumidification is significantly lower than that before dehumidificati