A direct hot-wire calibration technique to account for ambient temperature drift in incompressible flow

A procedure for correcting the hot-wire calibration for ambient temperature drift is presented which uses the least squares method to find a single equation for velocity as a direct function of ambient temperature, pressure, and hot-wire voltage. With this direct technique, no correction factors or...

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Bibliographic Details
Published in:Experiments in fluids 1990-02, Vol.8 (5), p.299-300
Main Authors: Cimbala, J. M., Park, W. J.
Format: Article
Language:English
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Summary:A procedure for correcting the hot-wire calibration for ambient temperature drift is presented which uses the least squares method to find a single equation for velocity as a direct function of ambient temperature, pressure, and hot-wire voltage. With this direct technique, no correction factors or other approximations are required. Furthermore, since the equation is based on fundamental heat transfer relationships, extrapolations can be made with confidence, in contrast to standard polynomial fits. (V.L.)
ISSN:0723-4864
1432-1114
DOI:10.1007/BF00187234