基于突扩激波管的过渡态压力探针梳校准方法研究  

Research on calibration method of transient pressure probe rakes based on expansion shock tube

作　　者：赵国松 史博 李峰 陈晓松 ZHAO Guosong;SHI Bo;LI Feng;CHEN Xiaosong(AVIC Changcheng Institute of Metrology&Measurement,Beijing 100095,China)

机构地区：[1]中国航空工业集团公司北京长城计量测试技术研究所,北京100095

出　　处：《计测技术》2024年第6期32-38,共7页Metrology & Measurement Technology

基　　金：国家“十四五”计量技术基础科研项目(JSJL2023205A002)。

摘　　要：为了满足大尺寸过渡态压力探针梳的校准需求,提出基于突扩激波管的压力探针梳校准方法。采用FLUENT软件进行突扩激波管模型中的激波动力学仿真,分析激波的运行规律,并得到流场流动过程中压力等参数的变化规律,结果表明低压段内压力受入射激波、反射激波、压缩波等影响,最后会变得均匀。利用突扩激波管装置开展压力测量实验,结果表明:基于150mm管腔直径的低压段得到的上升时间小于9ms,平台压力持续时间大于50ms。本研究为推动航空发动机、航天、医疗等领域的过渡态压力测试系统校准技术发展提供了重要参考。In order to meet the calibration needs of large-size transient pressure probe rakes,a pressure probe rake calibration method based on expansion shock tube was proposed.The FLUENT software was used to simulate the dynamics of the shock wave in the shock tube,and the operation law of the shock wave and the change of pressure and density of the flow field were analyzed.The results showed that the pressure in the low-pressure section eventually became uniform after being affected by the incident shock wave,the reflected shock wave,the compression wave and its multiple reflections.The pressure measurement experiments were conducted by using the expansion shock tube device with soft and hard aluminum diaphragms.The results showed that the rise time was less than 9 ms and the duration of platform pressure was greater than 50 ms in the low-pressure section inside a 150 mm diameter of shock tube.This study has important reference value for the calibration of transient pressure testing systems in aero engine,aerospace,medical and other fields.

关 键 词：压力探针梳 校准方法 激波管 过渡态压力 上升时间 航空发动机 

分 类 号：TB935[一般工业技术—计量学] V211[机械工程—测试计量技术及仪器]