压气机转子内部流场SPIV测量的精度分析  

Precision analysis of the flow field measured in compressor rotor by using stereoscopic particle image velocimetry

作　　者：张志博[1] 于贤君[1] 刘宝杰[1] 

机构地区：[1]北京航空航天大学能源与动力工程学院航空发动机气动热力科技重点实验室,北京100191

出　　处：《航空动力学报》2010年第4期868-876,共9页Journal of Aerospace Power

基　　金：国家自然科学基金(50476001);国家重点基础研究发展计划课题(2007CB210103)

摘　　要：讨论了压气机转子内部流场测量结果的不确定度分析方法,分析了三维速度的直接测量结果、一阶统计量(涡量)和二阶统计量(雷诺应力)测量结果的收敛性,及其所能够达到的典型测量精度;最后分析了影响速度高阶统计量测量精度的主要因素,及提高其精度的可行技术途径.This paper discussed the uncertainty analysis method of some SPIV results measured inside the compressor rotor.The convergence characteristics of the SPIV results of the three velocity components,the first-order results（vorticity） and the second-order statistics（the Reynolds stress） were investigated,and the measurement accuracy was analyzed.Then,the analysis of the main influential factors to the measurement accuracy of high-order statistics was carried out.At last,some advices for improving the measurement accuracy of SPIV in turbomachinery were given.

关 键 词：体式粒子图像测速 湍流统计场 测量精度 压气机 

分 类 号：V211.71[航空宇航科学与技术—航空宇航推进理论与工程]