附面层抽吸对高负荷跨音风扇转子性能的影响

针对高负荷跨音速压气机存在强激波及严重的激波与附面层干扰，以某高负荷跨音风扇转子为研究对象，采用数值方法研究了吸力面不同抽吸位置对风扇转子性能的影响。结果表明：高负荷跨音风扇转子存在激波和逆压梯度引起的附面层分离，合理的抽吸位置既能有效的削弱激波与附面层干扰，又能控制尾缘分离，使通道激波后移，扩大流道高马赫数范围；通道内三维激波范围的扩大会带来转子稳定裕度的负面影响。

Effects of Boundary Layer Suction on the Performance of High-load Transonic Fan Rotor

In high-load transonic compressor, there is always strong shockwave as well as its interaction with boundary layer. A high-load transonic fan rotor is investigated through numerical simulation to explore the influence of different aspirated position on the fan rotor performance. The results show that shockwave and adverse pressure gradient in high-load rotor passage will cause boundary layer separation. Reasonable aspirated position can effectively weaken the interference between shockwave and boundary layer, and also control the trailing edge separation, make passage shockwave moving toward outlet, enlarge the work range at high Mach number; the expansion of the three-dimensional shockwave in the channel will bring negative effect on rotor stall margin.