底层隔板法壁面剪应力测量技术研究与发展

Sublayer fence for wall shear stress measurement

介绍了机械式底层隔板测量流体壁面剪应力的基本原理。重点阐述了基于微机电系统(MEMS)的微型底层隔板的集成化结构及其工作原理,介绍了其研究发展及测试应用情况。最后,简要分析了常规剪应力微传感器在高温测试方面的弊端,并结合已有高温摩阻测试研究,提出了未来壁面剪应力测量技术的发展方向。

This paper is a review of the sublayer fence for wall shear stress measurements in the turbulent boundary layer. A summary is presented of the main techniques for determining the skin friction that makes the sublayer fence gauge an attractive approach for use in such environ- ments. The directional surface-fence gauge for three-dimensional turbulent boundary layer meas- urements is also introduced. The micro sublayer fence utilizing Micro Electro-Mechanical Sys terns （MEMS） technology is a promising approach, and many concepts have been proposed. Fi- nally, challenges faced in the development of process techniques are also outlined.