A possible reason for the action of bowed blade with high solidity is deterioration of performance caused by accumulation of low energy fluid near suction/end-wall corner.

• 分析表明，大稠度叶栅近端壁低能流体区较大而导致的端壁及吸力面角区性能恶化，是弯叶片能够发挥作用的重要原因。