Calibration of hot-wire probes using non-uniform mean velocity profiles |
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Authors: | Andrew Johnstone Mesbah Uddin Andrew Pollard |
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Affiliation: | (1) Department of Mechanical and Materials Engineering, Queens University, Kingston, ON, K7L 3N6, Canada |
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Abstract: | A simple iterative procedure is illustrated here to overcome two problems frequently encountered in hot-wire anemometry: (1) the calibration of hot wires at low velocity and (2) to account for the wall-proximity correction in the actual measurements. The low-velocity calibration method used an iterative correction procedure based on laminar pipe velocity profiles. It is shown that the use of this approach, together with a simple wall proximity correction procedure, provides a simple and accurate calibration of both single and cross hot wires, and gives reliable measurements. |
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