6 papers · 1 filter
Quantum vortex driven Kelvin wave in the thermal background of superfluid helium
Simone Scollo, Luca Galantucci, Giorgio Krstulovic
We present numerical evidence that Kelvin waves (KWs) on quantized vortices in superfluid helium can be directly observed in the normal fluid component at finite temperatures. Usin…
Inverse energy transfer in three-dimensional quantum vortex flows
Piotr Z. Stasiak, Andrew Baggaley, Carlo. F. Barenghi +2
Vortex reconnections play a fundamental role in fluids.They increase the complexity of flow and develop small-scale motions.In this work, we report that in superfluids, they can al…
Quantum vortices leave a macroscopic signature in the normal fluid
Luca Galantucci, Giorgio Krstulovic, Carlo F Barenghi
Recent work has highlighted the remarkable properties of quantum turbulence in superfluid helium II, consisting of a disordered tangle of quantised vortex lines which interact with…
Cross-Component Energy Transfer in Superfluid Helium-4
Piotr Z. Stasiak, Andrew W. Baggaley, Giorgio Krstulovic +2
The reciprocal energy and enstrophy transfers between normal fluid and superfluid components dictate the overall dynamics of superfluid He including the generation, evolution a…
A new self-consistent approach of quantum turbulence in superfluid helium
Luca Galantucci, Andrew W. Baggaley, Carlo F. Barenghi +1
We present the Fully cOUpled loCAl model of sUperfLuid Turbulence (FOUCAULT) that describes the dynamics of finite temperature superfluids. The superfluid component is described by…
Mesoscale helicity distinguishes Vinen from Kolmogorov turbulence in helium II
L. Galantucci, C. F. Barenghi, N. G. Parker +1
Experiments and numerical simulations show that quantum turbulence exists in two distinct limiting regimes: Kolmogorov turbulence (which shares with classical turbulence the import…