发动机室内试车台流场品质研究  

Study on Quality of Flow Field of Indoor Engine Test Cells

作　　者：刘琳琳 王毅[1] 常蕾[1] LIU Linlin;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》2021年第4期13-17,共5页Metrology & Measurement Technology

基　　金：工信部民机重大专项(MJ-2015-J-98)。

摘　　要：流场品质对航空发动机室内试车台的性能试验结果有重要影响,高品质流场是室内试车台进行气动附加阻力准确修正的基础。本文对比介绍了国内外室内试车台气动流场参数要求差异,分析了室内试车台进排气结构等因素对流场品质的影响,提出了以试车间气流速度均匀性、引射比、进气道总压均匀性为核心参数的流场品质评价参数体系,并针对未来国内室内试车台在提高流场品质方面需要开展的工作提出了建议。The quality of the flow field has an important effect on the performance test of the engine in the indoor test bed,and the highquality flow field is the basis of accurate correction of the additional aerodynamic resistance in the indoor test bed.This paper compared and analyzed the difference of parameter requirements of indoor test bed aerodynamic flow field at home and abroad,analyzed the influence of inlet and exhaust structure of indoor test bed on flow field quality,and proposed the flow field quality evaluation parameter system with the uniformity of airflow velocity in test shop,injection ratio and total pressure distortion of inlet port as the key parameters.At the same time,some suggestions for improving the quality of flow field in domestic indoor test stand are put forward.

关 键 词：航空发动机 室内试车台 流场品质 

分 类 号：TB937[一般工业技术—计量学]