论文部分内容阅读
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。
Aiming at a high-load transonic compressor with strong shocks and serious shock waves and interferences, a high-load transonic fan rotor is taken as a research object, and the numerical method is used to study the influence of different suction positions on the performance of the fan rotor . The results show that there is separation between the surface layers due to the shock wave and the reverse pressure gradient in a high-load transonic fan rotor. Reasonable suction position can not only effectively attenuate the interference between the shock wave and the surface layer, but also control the separation of the trailing edge, The shock wave moves backward to enlarge the high Mach number range of the flow channel. The widening of the three-dimensional shock wave in the channel will bring about the negative influence of the stability margin of the rotor.