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.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
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)
关键词
体式粒子图像测速
湍流统计场
测量精度
压气机
stereoscopic particle image velocimetry（SPIV）
turbulence statistic
measurement accuracy
compressor
