Mixed vOrticity-VElocity MEasurements in quaNtum Turbulence 2 EuHIT Funded Project

### Team

Pantxo Diribarne
Sbt, Grenoble, France

### Overview

Research Infrastructure
CEA Grenoble Helium Infrastructures, France
Facilities used
HeJet (HeJet)
We have identified a facility - HeJet at Grenoble Helium Infrastructures - which would allow us to carry out turbulence measurements otherwise impossible in our own laboratories. Our motivation is to complement existing global measurements of the density of quantized vortices in a steady turbulent superfluid helium flow, with new local measurements of velocity fluctuations available at HeJet with the hot-wire anemometry technique. This would allow us to significantly reduce experimental errors on the determination of a key property of turbulent superfluid $$^{4}$$He, its effective viscosity. This property is customarily a term of comparison between quantum turbulent experiments and theories, therefore to improve its firm experimental grounding is very important for the field.