管道对进气道动态总压测量影响修正方法  

Correction method for the effect of tube on the measurements of fluctuation total pressures in inlet

作　　者：徐彬彬 王学[1] 巫朝君[1] 朱任宇 曾维平 唐建平[1] XU Binbin;WANG Xue;WU Chaojun;ZHU Renyu;ZENG Weiping;TANG Jianping(Low Speed Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China)

机构地区：[1]中国空气动力研究与发展中心低速空气动力研究所,四川绵阳621000

出　　处：《航空动力学报》2022年第12期2719-2728,共10页Journal of Aerospace Power

基　　金：中国空气动力研究与发展中心风雷青年创新基金(PJD20190236)。

摘　　要：进气道实验需要测量进气道出口截面的动态总压,当动态压力传感器与测点之间存在管道时,动态总压测量值与真值之间存在较大误差,进而会影响进气道出口截面湍流度的测量精度。通过在中国空气动力研究与发展中心涡轮动力模拟器校准箱的实验,系统地研究了管道对动态总压和湍流度测量的影响。实验结果表明:管道对动态总压和湍流度测量的影响非常严重,动态总压脉动量频域值可被放大10倍以上,湍流度可以放大2.8倍以上。基于修正耗散模型,通过实验结果对修正耗散模型进行了标定,并提出了动态总压管道影响修正方法,修正方法能够有效减小管道所引起的测量误差。The fluctuation total pressures in aerodynamic interface plane need be measured in inlet experiments.The tube between the pulsating pressure sensor and the measurement point may lead to larger error between the measurement value and the truth value,and also generate larger effect on the measurement of the turbulence.The experiments in Turbine Power Simulation calibration tank of China Aerodynamics Research and Development Center were performed to research the effect of tube on the measurement of fluctuation total pressure and the turbulence.Experiment results showed that the effect of tube seriously affected the measurement of the fluctuating total pressure and the turbulence.The value of fluctuating total pressure in frequency can be magnified more than 10 times and that of turbulence can be magnified more than 2.8 times.A correction method based on the improved dissipation model was proposed and calibrated,which can effectively reduce the measuring error brought by the tube.

关 键 词：风洞实验 动态总压 湍流度 管道影响 修正方法 

分 类 号：V211.74[航空宇航科学与技术—航空宇航推进理论与工程]