Basis Study on the Output-Voltage Variation of Constant-Temperature Anemometry at Freestream Velocity

Abstract

We study a recently proposed recalibration technique for constant-temperature anemometry measurements, and address a basic issue of the scheme. First, the deviation of the output voltage from linearity was considered. A method of predicting the mean deviation was then derived and validated. The gradient of the calibration curve obtained using the recalibration method includes error at the freestream velocity, and the temporal variation of this error was approximated by a quadratic function. Finally, the predicted mean error was validated.