航空发动机气动附加阻力修正测点布置与试验  

Arrangement and Test of Aeroengine Thrust Additional Aerodynamic Drag Correction Measuring Point

作　　者：任怡雪 王毅[1] 常蕾[1] REN Yixue;WANG Yi;CHANG Lei(Changcheng Institute of Metrology&Measurement,Beijing 100095,China)

机构地区：[1]航空工业北京长城计量测试技术研究所,北京100095

出　　处：《计测技术》2020年第6期40-44,共5页Metrology & Measurement Technology

基　　金：国家“十三五”技术基础科研项目(JSJL2017213b001)。

摘　　要：航空发动机室内试车台推力气动附加阻力的大小会因为试车台进气流场的差异产生不同,而进气流场的状况很难直接观测,测量位置的选定与试车间的流场状况相关,因此本文通过对某型发动机的室内试车间的整场流场特性进行数值模拟研究,得到发动机试车间内的流场状况,分析了试车间内的气流速度、静压等物理量,绘制整场流线,针对试车间的气动附加阻力截面法修正方法,研究了在不同截面下的速度、静压变化规律,为气动附加阻力修正截面法在实际试车中的测量布点提供了依据,并且做了某型发动机室内试车台的实测试验,得到了测量及计算结果。结果表明,数值模拟可以清晰的模拟出试车时的整场状态,能得到实测不便测量的数据,可以对试车间不便搭建测量的位置进行补充测量,基于仿真得到的测点布局满足测量和计算的需求。The aerodynamic additional resistance on the indoor test bed of an aeroengine will be different due to the difference in the inlet air field of the test bed,and the condition of the inlet air field is difficult to observe directly.The selection of measurement position is related to the flow field condition of the test room.Therefore,this paper trough the indoor testbed of an engine numerical simulation research,the characteristcs of the entire flow field was abtained.We analyzed the physical quantities such as velocity,static pressure and drawn the entire flow line.Aiming at the modification method of aerodynamic additional drag section method in the indoor testbed,the velocity and static pressure variation law under different sections are studied,which provides the basis for the measurement of the measurement points of aerodynamic additional drag section method in the actual test.The measurement and calculation results are obtained through the actual test of a certain engine.The results show that the numerical simulation can clearly simulate the whole field conditions during the test,and obtained the measured inconvenient data.It can supplement the inconvenient measuring positions in the indoor testbed,and obtain the layout of measuring points based on the simulation meet the requirements of measurement and calculation.

关 键 词：数值模拟 航空发动机 测量方法 气动附加阻力 推力修正 

分 类 号：TB9[一般工业技术—计量学]