引气对跨声速压气机稳定性的影响  

Influence of Tip Bleeding on the Stability of a Transonic Compressor

作　　者：晏松 楚武利[1,2] YAN Song;CHU Wuli(School of Power and Energy,Northwestern Polytechnical University,Xi'an 710129,China;Collaborative Innovation Center of Advanced Aero-Engine,Beijing 100191,China)

机构地区：[1]西北工业大学动力与能源学院,西安710129 [2]先进发动机协同创新中心,北京100191

出　　处：《动力工程学报》2020年第2期123-130,137,共9页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(51576162)。

摘　　要：以NASA Rotor 37为研究对象,采用数值模拟方法开展了叶顶引气对转子稳定性的影响研究。结果表明:叶顶引气可以提高转子的稳定性,引气的扩稳机理在于引气口的抽吸作用,这种作用使得转子叶顶低速堵塞区域减小,增强了转子叶顶的流通能力,达到扩稳的目的;引气位置和引气质量流量对转子稳定性的影响具有交互作用,在0.5%和1.0%引气质量流量比下,随着引气位置的后移,转子稳定工作裕度逐渐减小,在1.5%引气质量流量比下,随着引气位置的后移,转子稳定工作裕度却呈现先增大后减小的趋势;引气位置在20%叶片叶顶轴向弦长(C)处时,随着引气质量流量的增加,转子稳定工作裕度先增大后减小,而引气位置在60%C和100%C处时,随着引气质量流量的增加,转子稳定工作裕度逐渐增大。Taking the NASA Rotor 37 as an object of study,the influence of tip bleeding on the stability of the rotor was numerically simulated.Results show that tip bleeding could help to improve the stability of the rotor.The mechanism of stability enhancement comes from the suction action of tip bleeding,which reduces the area of tip blockage,and therefore enhances the flow capability in the tip region.The bleed position and flow rate interactively affect the rotor stability.At the bleed flow rate of 0.5%and 1.0%,the stable working margin of rotor gradually reduces with the bleed position moving backward;at the bleed flow rate of 1.5%,with the bleed position moving backward,the stable working margin tends to increase first and then decrease.When the bleed position is fixed at 20%C,the stable working margin of rotor increases first and then decreases with the increase of bleed flow rate;and when the bleed position is respectively at 60%C and 100%C,as the bleed flow increases,the stable working margin of rotor gradually increases accordingly.

关 键 词：压气机 引气 稳定工作裕度 叶顶堵塞 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]