The behavior characteristics of a commercially available hot-wire anemometer have been examined in the presence of low velocities, lwss than 0.1 m/s for the most part, and in both horizontal and vertical air flows. The orientation of the probe in a horizontal flow has been found to have a definite effect on velocity measurements, and a lower limit to the reliable application of hot-wire anemometry has been evaluated for a particular type of probe. Vertical flow measurements have resulted in the discovery of the magnitude of natural convective velocity, and a possible method for determining the dimensions of the temperature jump distance has been developed indirectly from the description of the shape of the calibration curve.
P. J. Christman and J. Podzimek, "Hot-wire Anemometer Behaviour In Low Velocity Air Flow," Journal of Physics E: Scientific Instruments, vol. 14, no. 1, pp. 46 - 51, article no. 13, IOP Publishing, Dec 1981.
The definitive version is available at https://doi.org/10.1088/0022-3735/14/1/013
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01 Dec 1981