Abstract
The calibration of inclined hot wires used with constant temperature anemometers is performed for Mach numbers 2 and 3. The determination of the three relevant sensitivity coefficients is made for overheat ratios from 0.3 to 0.8. A strong unexpected influence of the overheat is observed independent of the apparatus used. Some particular behaviour of the angular sensitivity coefficient is observed for small-size wires; the origin of the two kinds of behaviour observed is not explained but is thought to be due to geometrical characteristics. Careful calibrations should be performed for each wire prior to any measurements. The study of turbulent stresses in a symmetrical wake at Mach 3.3 is then performed. It allows a check on the validity of the method using characteristic properties of such a flow.
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Bonnet, J.P., Knani, M.A. Calibration and use of inclined hot wires in a supersonic turbulent wake. Experiments in Fluids 6, 179–188 (1988). https://doi.org/10.1007/BF00230730
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DOI: https://doi.org/10.1007/BF00230730