Gravity simulators are laboratory systems in which small excitations such as sound or
surface waves, behave as fields propagating on a curved spacetime geometry. The analogy …

Quantum turbulence—the stochastic motion of quantum fluids such as 4He and 3He-B,
which display pure superfluidity at zero temperature and two-fluid behavior at finite but low …

We collect and describe the observed geometrical and dynamical properties of turbulence in
quantum fluids, particularly superfluid helium and atomic condensates for which more …

We present an experimental study of the velocity circulation in a quasi-two-dimensional
turbulent flow. We show that the area rule of circulation around simple loops holds in both …

The velocity circulation, a measure of the rotation of a fluid within a closed path, is a
fundamental observable in classical and quantum flows. It is indeed a Lagrangian invariant …

We report a detailed analysis of the energy spectra, second-and high-order structure
functions of velocity differences in superfluid He 4 counterflow turbulence, measured in a …

Three-dimensional anisotropic turbulence in classical fluids tends towards isotropy and
homogeneity with decreasing scales, allowing—eventually—the abstract model of …

Starting from a historic perspective, we discuss the use of second sound in experimental
investigations of quantized vorticity and quantum turbulence in the two-fluid temperature …

Despite being a quantum two-fluid system, superfluid helium-4 (He II) is observed to behave
similarly to classical fluids when a flow is generated by mechanical forcing. This similarity …

Velocity measurements in turbulent superfluid helium between co-rotating propellers are
reported. The parameters are chosen such that the flow is fully turbulent, and its dissipative …