2018/05/31 by Luca Galantucci, L. Galantucci, C. F. Barenghi +4
Physics and Astronomy · #Cascade #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Eddy #Energy cascade #Helicity #K-epsilon turbulence model #K-omega turbulence model #Kolmogorov microscales #Mechanics #Mesoscale meteorology #Meteorology #Physics #Quantum mechanics #Quantum turbulence #Quantum, superfluid, helium dynamics #Solar and Space Plasma Dynamics #Statistical physics #Superfluid helium-4 #Superfluidity #Turbulence #Turbulence kinetic energy #Vortex #cond-mat.other #physics.flu-dyn
paper · pdf · doi:10.1103/physrevb.103.144503
published as Phys. Rev. B 103, 144503 (2021) · To be published in Phys. Rev. B (2021)
arxiv created 2021/04/02 · openalex publication_date 2021/04/06 · openalex created_date 2021/04/13 · arxiv updated 2021/04/14 · openalex updated_date 2026/08/05
Experiments and numerical simulations show that quantum turbulence exists in two distinct limiting regimes: Kolmogorov turbulence (which shares with classical turbulence the important property of a cascade of kinetic energy from large eddies to small eddies) and Vinen turbulence (which is more similar to a random flow). In this work, we define a mesoscale helicity for the superfluid, which, tested in numerical experiments, distinguishes the two turbulent regimes, quantifying the amount of nonlocal vortex interactions and the orientation of the vortex lines.