Abstract
A computer-aided calibration method for hot film probes is presented which tolerates statistical and some systematic errors, and which allows data evaluation in real-time. Essentially, the velocity is approximated by a power series at each yaw angle and for each sensor. A weighting function minimizes the influences of errors. At measurement time the anemometer voltages are roughly linearized. The digitized voltages are subjected to a combination of iteration and interpolation in order to compute the velocity components. RMS-values of the two velocity components parallel to the wall, u and w, and of their partial derivatives with respect to time in a turbulent wall boundary layer are shown and will be used for comparison.
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Schewe, J., Ronneberger, D. Error-tolerant calibration of dual sensor probes used in a turbulent wall boundary layer. Experiments in Fluids 9, 285–289 (1990). https://doi.org/10.1007/BF00233129
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DOI: https://doi.org/10.1007/BF00233129