压气机转子叶片叶尖流场的低速模化设计

针对带进口导叶的高速压气机第1级转子叶片的叶尖流场进行了低速模化设计,为后续的低速压气机叶尖流场损失和失速测试试验做了准备.利用叶片造型和数值模拟方法,以保证高、低速压气机转子叶片表面压力系数及叶片排进、出口主要气动参数分布相似为目标,对高速原型压气机进行低速模化设计,包括调整流道形状,对叶型进行反复迭代,并在进口导叶和1级转子叶片的造型设计上突破了几何相似的限制.最后,对高低速压气机的几何、气动参数和流场结构进行了全面的计算对比分析,证明采用所提出的低速模化设计方法是成功的,实现了在流量系数相同的情况下,加工量因子和转子扩压因子分别为98.16%,94.95%的相似度. 

Low-speed modeling design for tip flow field of compressor rotor blade

A low-speed compressor is designed for tip flow field of first stage rotor in the high-speed compressor with an inlet guide vane. It was prepared for subsequent experiments of the low-speed compressor stall and blade tip flow loss. The design used blade design and numerical simulation methods to ensure similar distribution of blade surface pressure coefficient and blade inlet and outlet main aerodynamic parameters of high- and low-speed compressors. High-speed prototype compressor was taken as research object to design a low-speed compressor. It included adjustment of flow-path geometry, iterative design of blade profiles and breakthrough the limitation of the geometric similar principle for inlet guide vane and first-stage rotor blade design. Finally, the comparative analyzed of geometry, aerodynamic parameters and flow-field structure of high- and low-speed compressor proved that the low-speed modeling design is useful. This design guarantees the similarity of processing capacity factor and rotor diffuser factor is 98.16%, 94.95%, respectively, which is under the same flow coefficient.