Application of hot-wire anemometry to He II superfluid turbulence
Created: 28 Dec 2016, 14:25,
Updated: 28 Dec 2016, 15:15
We present data resulted from measurement of response of the Pt-Rh hot-wire anemometer, overheated up to 2.1 K, in a pressurized liquid helium turbulent flow past a grid at temperatures between 1.6 and 2.3 K. In the superfluid regime, that is for temperatures between 1.6 and T_\lambda=2.13 K, the vortex line density in turbulent superfluid was simultaneously measured by the second sound technique. The dataset contains the time series for the electronic output voltage of the hot-wire together with the results of measurements of the vortex line density (at temperatures below T_\lambda), and the power spectral densities of the electronic output of the hot-wire. Among the objectives are: 1) To determine whether the velocity is the only quantity that affects the heat transfer between between the hot-wire and turbulent He II; 2) to clarify the effect of temperature on the calibration law for the heat transfer between the hot-wire and turbulent superfluid helium.
Hot Wire Anemometry