Abstract
In this study, we fabricated a hot-film sensor to measure the wall shear stress fluctuation in turbulent flows. The heated element of the sensor, which acts as a sensing part is 10 μm wide and 1 mm long. The substrate of the sensor is made of oxidized silicon wafer of 1 μm thickness for increasing the sensor's temporal resolution. The calibration test shows that the sensor can measure the time-averaged wall shear stress accurately. The result of wall shear stress fluctuation measurement shows a good agreement with that of previous study.
