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在低速条件下对三种吸气槽方案的高负荷吸附式压气机叶栅进行了详细的实验研究。通过墨迹流场显示法对叶栅壁面流场进行了测量,利用五孔气动探针对叶栅出口截面进行了扫掠,并对不同叶高的型面静压进行了采集,详细分析了全叶高吸气方式和两种局部吸气方式对叶栅流场结构和负荷能力的影响。结果表明,采用吸力面两端吸气对抑制角区分离流动、减弱通道涡强度和尺度、提高叶栅内流动性能的效果要优于其它两种方式,积聚在角区的低能流体由于较大的吸气量而被大量吸除是性能改善的关键。
Under low speed conditions, three kinds of suction tank scheme of high load adsorption compressor cascade conducted a detailed experimental study. The flow field of cascade wall was measured by ink flow field display method. The outlet section of cascade was swept by the five-hole pneumatic probe, and the hydrostatic pressure at the different blade height was collected. Effect of Leaf High Suction and Two Local Aspiration Methods on Flow Field Structure and Load Capacity of Cascades. The results show that the use of suction at both ends of the suction surface to inhibit the separation of corner flow, weaken the channel strength and scale vortex, to improve the performance of cascade flow better than the other two methods, low-energy fluid accumulated in the corner due to the larger Of the inspiratory volume and a large number of suction is the key to improving performance.