跨音轴流压气机自循环喷气扩稳试验研究  

Experimental Investigation of Self-recirculating Tip Air Injection in Transonic Axial Flow Compressor

作　　者：李继超[1] 林峰[1] 刘乐[1,2] 童志庭[1] 聂超群[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院大学,北京100190

出　　处：《机械工程学报》2014年第8期135-143,共9页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目(51306178)

摘　　要：轴流风扇／压气机稳定性控制一直叶轮机械领域迫切需要解决的难题，特别是对于内部流动复杂的跨音转子。提出以自循环喷气方式作为控制手段，并在一台单级跨音风扇／压气机上进行试验研究。试验中通过白行设计自循环机构在压气机上进行基于自循环的叶顶喷气研究，并考察不同抽气角度和喷气偏航角对压气机稳定裕度和效率的影响，并通过测量机匣壁面非定常压力信号对跨音压气机自循环喷气机构中前端喷气的扩稳机理进行分析。试验结果表明：自循环喷气能够有效拓宽跨音压气机的流动失稳裕度，并取得了8％～15％的扩稳效果，而且能够略微提高压气机峰值点的效率。另外，通过功率谱密度分析，前端叶顶喷气的扩稳机理仍然是影响叶顶间隙泄漏流的非定常性。Stability control of internal flow in compressor is one of the most difficult problems which is needed to solved urgently, especially in transonic compressor with complex flow. In order to realize the effective control in actual compressor, the self-recirculating injection was chosen as control method, the experiment has been performed in a transonic compressor test rig. The structure of suction port and injector are designed first, then the effect on stall margin improvement （SMI） and efficiency with different suction angle and injected yaw angle is investigated. And the stability enhancement mechanism of front injection was also analyzed. The experimental results demonstrated that the self-recirculating injection can improve the stall margin effectively, the SMI of 8%-15% can be obtained, at the same time, the peak efficiency can be also enhanced a little. And the front injection of self-recirculating injection can also influence the unsteady tip leakage flow to improve the stall margin.

关 键 词：压气机 自循环喷气 失速裕度 效率 叶顶间隙泄漏流的非定常性 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]