进气压力畸变试验中面平均紊流度的计算  

Calculation of the average turbulence in the inlet pressure distortion experiment

作　　者：杜军 韩伟 DU Jun;HAN Wei(AECC Sichuan Gas Turbine Establishment,Mianyang 621010,China)

机构地区：[1]中国航发四川燃气涡轮研究院

出　　处：《燃气涡轮试验与研究》2019年第3期53-57,共5页Gas Turbine Experiment and Research

摘　　要：为研究航空发动机进气压力畸变试验中数据处理方法对面平均紊流度计算结果的影响,通过分析涡扇发动机进气压力畸变试验数据,得到了不同取样时间及不同滤波截止频率对面平均紊流度计算的影响结果。分析表明,只有合理选择取样时间及滤波截止频率,才能保证所计算面平均紊流度的准确性。本研究为进气压力畸变试验中面平均紊流度的计算提供了一种参考方法。In order to study the effects of data processing method on the calculation results of the average turbulence in the inlet pressure distortion experiment of aero-engine,the experiment data of the inlet pres sure distortion on a certain turbofan engine was analyzed.The effects of different sampling time and differ ent filter cut-off frequency on the calculation of the average turbulence were obtained.The results show that only the rational selection of the integral time and the filter cut-off frequency can ensure the accuracy of the calculated average turbulence.This study provides a reference for the calculation of the average turbulence in the future pressure distortion experiment.

关 键 词：航空发动机 压力畸变试验 数据处理方法 面平均紊流度 取样时间 滤波截止频率 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]