用PIV技术测量跨音压气机转子内流的激波结构

THE INTERNAL FLOW SHOCK WAVE MEASUREMENT OF TRANSONIC COMPRESSOR BY PIV TECHNIQUE

在跨音压气机试验台上进行了用ＰＩＶ技术测量内流激波结构的试验研究。乙二醇微小液滴成功地被用作示踪粒子；自行设计制造的激光潜望镜成功地将双脉冲激光器发出的激光束导入机匣。用数字ＰＩＶ技术测量到的跨音压气机叶片流道内的二维瞬态绝对速度场分布被转化为相对速度分布，发现的激波结构测量结果与静压分布测量结果进行了比较，得到了比较满意的符合。本文讨论了目前试验装置和测量系统所存在的问题，提出了进一步工作的要求．

The paper presents some research works on the internal flow shock wave measurement of transonic compressor by PIV technique. A kind of liquid particle of glycol was successful to be used as the seed. An illumination periscope with sheet forming optics was designed and manufactured, it leaded the laser shot generated from an integrated dual-cavity Nd-YAG laser of TSI PIV system into the blade path. Some PIV measurement results of internal flow were shown and discussed briefly.