An instrument for wall shear stress measurement

Yuchao Yan, Chengyu Jiang, Binghe Ma, Runbo Chen, Jinjun Deng, Jian Luo, Tiande Gao, Hui Xu

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The instrument is designed for wall shear stress measurement, operating with flexible hot film sensors or floating-element sensors. The hot film sensor can be used to measure the wall shear stress on curved surfaces. And the floating-element sensor directly senses wall shear stress, and the output signal has good linear characteristics. The application software of the instrument is developed to analyze wall shear stress and flow phenomena of the boundary layer. The benchmark experiments of the flat plate were conducted in wind tunnels to show that the instrument with hot film sensors has a related normalized standard deviation of 1.02%, and with floating-element sensors has a related normalized standard deviation of 0.92% and a good linearity of 1.5%. And dynamic calibrations of the instrument with floating-element sensor show that the instrument has a dynamic response up to 6500 Hz.

源语言英语
主期刊名Ninth International Symposium on Precision Mechanical Measurements
编辑Liandong Yu
出版商SPIE
ISBN(电子版)9781510634589
DOI
出版状态已出版 - 2019
活动9th International Symposium on Precision Mechanical Measurements, ISPMM 2019 - Chongqing, 中国
期限: 18 10月 201921 10月 2019

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
11343
ISSN(印刷版)0277-786X
ISSN(电子版)1996-756X

会议

会议9th International Symposium on Precision Mechanical Measurements, ISPMM 2019
国家/地区中国
Chongqing
时期18/10/1921/10/19

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