Preliminary study of bed shear stress measurement under wave action

Based on the previous results,the wave flume experiment was carried out in this paper.A new heat-sensitive sensor was adopted in this study to directly measure the bed shear stress under wave action. According to the analysis of the relationship between output voltage and theoretical shear stress,voltage value of the sensor and theoretical shear stress are both varied with time periodically.This result fully validates the feasibility of the heat-sensitive sensor used in measurement of bed shear stress,and also lays the foundation for further researches on the direct measurement of bed shear stress.