利用表面热膜测量了定常来流条件下某超高负荷后加载叶型吸力面附面层的分离流动,并与壁面静压实验结果进行了对比.结果表明,热膜用于超高负荷低压涡轮叶型附面层流动测量可靠性较高;热膜测得的准壁面剪切应力及相关统计参数能准确地判断附面层分离、再附着和转捩位置;在低雷诺数条件下,分离泡尺寸和转捩区长度随来流雷诺数的减小而增加. The separation flow on the suction surface of the loaded suction surface was measured by the surface thermal film after a super-high load, and the results were compared with the results of the static pressure test on the wall. The results show that the hot film is suitable for ultra-high load and low pressure Turbine leaf surface laminar flow measurement reliability is higher; the thermal wall measured quasi-wall shear stress and related statistical parameters can accurately determine the separation of detachment, reattachment and transfer position; at low Reynolds number conditions, Separation bubble size and transition zone length increase with the decrease of Reynolds number.