The spanwise movement and mixing of vortices on the blade suction surface towards the mid-span was stronger due to the effect of the increased positive bowed angle.

• 叶展中部流动分离的加重导致集中涡系破裂，从而引起流道内气流的严重堵塞，这是损失激增的主要原因，因此，要在高负荷压气机叶栅中应用正弯叶片，必须有效抑制中部流动的恶化。