Abstract
A novel anemometer was designed and implemented for simultaneous measurement of velocity and temperature in air flows with a single hot wire probe. The principle of periodically varying the overheat ratio of the wire was selected and applied through a parameterizable electronic chain. The specific methods developed for the calibration procedure and the signal processing are explained. The accuracy of the measurements was assessed by means of Monte Carlo simulations. Examples of the results are given for a non-isothermal low speed mixing layer. Finally, the ability to extract velocity–temperature coupling from a turbulent non-isothermal flow is highlighted through a conditional probability density function (PDF) analysis.
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