Abstract
A new directionally sensitive velocity measurement system based upon a single oscillating hot-wire probe has been developed. The vibration of the hot-wire was effected by a piezoelectric oscillator that could be driven at different amplitudes and frequencies. The sign of the local flow velocity was determined by the phase shift between the motion and the output from the hot-wire. The system was used to measure mean and fluctuating velocities profiles of the separated flow behind a backward facing step.
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The authors thank Dave Roberts and the late Arthur Timms for the conception of the probe. A.M.M would like to thank the support of a British Council scholarship and a Region Rhone Alpes scholarship.
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Moulin, A.M., Gaster, M., Woodburn, C.N. et al. A directionally sensitive hot- wire anemometer. Experiments in Fluids 22, 458–462 (1997). https://doi.org/10.1007/s003480050072
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DOI: https://doi.org/10.1007/s003480050072