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A fast digital technique for calibration of hot-wires over a wide temperature range

This work describes a calibration technique for hot-wire anemometry which is accurate, fast, easy to implement, and covers extended temperature and velocity ranges. The novel feature of the technique is the collection of large quantities of data during a calibration experiment, by recording and analysis of the dynamic response of hot-wires to gradual heating. This approach differs from static methods, where the response of hot-wires to only one, constant value of temperature and velocity is obtained per calibration experiment.