The dynamic response of the constant-voltage anemometer (CVA) system was investigated both analytically and experimentally and compared to that of the CTA. The frequency response functions of the CVA system for a number of different circuit parameters and flow conditions were determined via laser-based radiative heating of the hot-wire sensor. A 2nd-order linear systems model of the CVA was developed to provide insight to the dynamic response and to interpret the experimental results. The qualitative variations in the frequency response function with changes in circuit parameters are in agreement with the model. The experimentally determined frequency-response functions of the CVA systems used in this study were found to have little dependence on the wire overheat ratio and Reynolds number.
Experiments in Fluids – Springer Journals
Published: Aug 7, 2000
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