发动机进气总压动态畸变流场测试及影响因素分析  

Measurements of Dynamic Total Pressure Distortion for Engine Inlet and Analysis of Effective Factors

作　　者：王勤[1] 刘世官[1] 李承辉[1] 王振华[1] 

机构地区：[1]中国航空工业沈阳发动机设计研究所,沈阳110015

出　　处：《航空发动机》2002年第2期6-11,共6页Aeroengine

摘　　要：扼要介绍了发动机进气总压畸变流场的动态测试分析方法,并利用所获得的大量试验数据计算了进口畸变流场的总压脉动强度及其在流场中的周向分布,开展了动态测量方法及数据处理中滤波截止频率、取样分析时间等因素对总压脉动强度影响的研究,用统计方法分析了进口畸变流场的特点,进而总结了进气总压畸变试验动态流场数据的一些处理、分析技术。The measurements of total pressure and its data processing methods are described on the inlet dynamic distortion flow field. The total pressure fluctuation and its circumferential distribution are computed and the properties of time - varied total pressure are statistically analyzed in this paper. The effect of many factors,including measuring methods and cut - off filter frequency and number of samples, are discussed on the total pressure fluctuation. The techniques of data processing and analyzing are also summarized on the intet dynamic distortion flow field.

关 键 词：进气总压 影响因素 动态压力 畸变流场 测量 航空发动机 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]