锯齿尾缘叶片气动特性数值模拟研究  

Numerical Simulation Research on Aerodynamic Characteristics of Sawtooth Trailing Edge Blade

作　　者：邹如萍 李传鹏[1] 安志强 商超群 宣彬 ZOU Ruping;LI Chuanpeng;AN Zhiqiang;SHANG Chaoqun;XUAN Bin(College of Energy and Power Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China;Compressor Research Division,AECC Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,China)

机构地区：[1]南京航空航天大学能源与动力学院,南京210016 [2]中国航发湖南动力机械研究所压气机研究部,株洲412002

出　　处：《南京航空航天大学学报》2021年第4期546-550,共5页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：使用数值模拟研究了静叶锯齿尾缘改型对3.5级压气机性能的影响,分析了锯齿形状、布置位置等对压气机转速特性的影响。结果表明,在进口导向叶片尾缘上全叶高开齿能够拓宽90%转速的压气机稳定工作范围,且对压比、效率的影响很小,而对100%转速特性影响不大;相对于本文开展的锯齿改型而言,齿宽小的结构优于齿宽大的锯齿,全叶高锯齿扩稳胜于部分叶高(叶尖)锯齿。这些研究加深了锯齿尾缘叶片对压气机性能影响的认识,为压气机扩稳研究提供了借鉴。In this paper,numerical simulation is used to analyze the effect of the trailing edge of the stationary blade sawtooth on the 3.5-stage compressor,and the influences of shape and positions of the sawtooth on the compressor speed.The results show that the full blade with high opening on the trailing edge of the inlet guide blade can broaden the stable range of the compressor at 90%speed,and barely impact the pressure ratio and efficiency.But it has little effect the compressor at 100%speed.In this study,a sawtooth with a small tooth width is better than that with a large tooth width,and a sawtooth with full high-opening blades is better than that with partial opening tip.This study deepens the understanding of the effect of serrated trailing edge blades on compressor performance,and provides a reference for research on improving compressor stability.

关 键 词：多级轴流压气机 锯齿尾缘 气动稳定性 数值模拟 

分 类 号：TK313[动力工程及工程热物理—热能工程]