实验流体力学2008，Vol.22Issue(3)：94-97,104,5.
基于MEMS传感器的高速风洞壁面剪切应力直接测量技术
Direct measurement technique of wall shear stress using MEMS sensors in a high-speed wind tunnel
屠恒章 1李建强 2明晓 3胡成行 2蒋卫民2
作者信息
- 1. 北京航空航天大学,北京,100083
- 2. 中国空气动力研究与发展中心,四川绵阳,621000
- 3. 南京航空航天大学,南京,210016
- 折叠
摘要
Abstract
This paper presents a direct measurement technique for wall shear stress.The capacitive MEMS sensor with pectinate floating element Was developed.The techniques of static and dynamic calibration are in-troduced.The demonstrative experiment wag carried out in a high-speed wind tunnel.The experiment results in-dicate that the local shear stress in turbulent flow is noticeably higher than in laminar flow.Monitoring localshear stress on a model can be also used for determining transition zone.In the present experiment,the transi-tion zone detected by the MEMS sensor is identical with what by the pressure transducer.关键词
剪切应力/边界层转捩/MEMS/高速风洞Key words
shear stress/boundary layer transition/MEMS/high-speed wind tunnel分类
航空航天引用本文复制引用
屠恒章,李建强,明晓,胡成行,蒋卫民..基于MEMS传感器的高速风洞壁面剪切应力直接测量技术[J].实验流体力学,2008,22(3):94-97,104,5.
