Investigation of using micro shear stress sensor array to detect boundary-layer separation point

Abstract

At the boundary layer's separation point, the mean shear stress drops to small value while its fluctuation increases dramatically. This paper present two methods, mean change and root mean square (RMS), to calculate and disposal the voltage output signal. Based on these methods, the ID microelectromechanical system (MEMS) based micro-shear-stress sensor array can be used to detect the location of the separation point. Through combining of two methods and analyzing the simulation data result, the position of the separation point can be detected accurately.