航空学报 > 1988, Vol. 10 Issue (10): 525-529

热线风速计测量中污染误差的消除方法

李亚平1, 林其勋1, 杜琴芳2, 马捷频2   

  1. 1. 无锡第二机械研究所;2. 西北工业大学
  • 收稿日期:1987-07-03 修回日期:1900-01-01 出版日期:1988-10-25 发布日期:1988-10-25

METHOD OF CONTAMINATION ERROR ELIMINATION IN HOT-WIRE ANEMOMETERS MEASUREMENTS

Li Yaping1, Lin Qixun1, Du Qinfang2, Ma Jieping2   

  1. 1. Wuxi Second Mechanical Research Institute;2. Northwestern Polytechnical University
  • Received:1987-07-03 Revised:1900-01-01 Online:1988-10-25 Published:1988-10-25

摘要: 热线风速计和其它接触式测量方法比较,具有探针对流场干扰小,空时分辨力高,频响快等优点。它和激光风速计(非接触式)一起,已成为当前研究流动微观机理的主要测试技术。但它的应用范围却受测试环境洁净度的限制。当然,热线应尽量用于洁净的环境,但在某些场合很难保证流场中没有轻微的污染,这就引入了热线测量的污染误差——利用热线预校

Abstract: This paper presents a method of calibration with actual flow fields to decrease the influences of oil vapor mixing with dust on the measurement result,and to extend application of hotwire anemometer.Using this method,the measurement error due to contamination can ba controled within a acceptable range, as the source of contamination is near steady. A demostration of two-dimensional flow mesurements is given.