中文摘要：

参照RTA发动机工作点的变化情况，对某型实验用高负荷风扇高空高速低换算转速条件下的性能进行了数值仿真。结果表明：高负荷单级风扇在高空高速低换算转速下，来流负攻角的增大引发了风扇通道的部分阻塞，限制了通道流量的增大；静子叶片角度的旋转能够部分限制来流过大的负攻角的出现，基本消除由气流分离引起的阻塞，进而使风扇的流量进一步增大，改善风扇的通流性。

英文摘要：

According to RTA operating map, a highly loaded single stage fan on low corrected speed and at various stator setting angles are simulated using threedimensional （3D） numerical simulation software NUMECA. The results show that under the condition of low conversion rotating speed in the highaltitude and at a highspeed, a partial fan passage is chocked up with flow and the increasing of the mass flow of fan is restricted due to the increasing negative angle of attack of blade loads. The negative angle of attack of blade is sensitive to stator setting angle. The adjustment of stator setting angle can partly restrict the neg ative angle of attack of blade and nearly remove the chock of fan passage, which loads the increasing of the mass flow and adapts the demand of the fan during wind milling.