热科学学报（英文版）2006，Vol.15Issue(4)：314-318,5.
The Response of a Low Speed Compressor on Rotating Inlet Distortion
The Response of a Low Speed Compressor on Rotating Inlet Distortion
摘要
Abstract
In multi-spool engines,the downstream compressor experiences a rotating inlet distortion if rotating stall occurs in upstream compressor,which may induce the instability of the whole compressor.In this paper,the compressor dynamic behavior is the major focus.The experiment was carried out on a single-stage low-speed axial-flow compressor.A rotating distortion generator equipped with different distortion sector(s) was designed to produce different rotating inlet distortion clockwise or counterclockwise with up to 100% of the compressor design speed.The distortion sector can be installed single or in some combination such as four sectors together.Three types of distortion sector/combination are used in the research work,which are single 30 degree sector,four 30 degree sectors and single 120 degree sector.It is found that the total pressure loss caused by rotating sector(s) increases when the distortion speed rises.For co-rotating distortions,all the three types of inlet distortion exhibited a peak in stall margin degradation when the distortion speed corresponded to roughly 50% of rotor speed.The two-dimensional numerical simulations of the compressor flow field clearly show the propagation of the disturbances trigged by the distortion sector(s).关键词
distortion/compressor/stall marginKey words
distortion/compressor/stall margin分类
能源科技引用本文复制引用
Chaoqun NIE,Jingxuan ZHANG,Zhiting TONG,Hongwu ZHANG..The Response of a Low Speed Compressor on Rotating Inlet Distortion[J].热科学学报（英文版）,2006,15(4):314-318,5.基金项目
The support of National Natural Science Foundation of China through Grant 50336050 is gratefully acknowledged. （）
