Mesoscale helicity distinguishes Vinen from Kolmogorov turbulence in helium-II

Article

关键词: VORTEX FILAMENT METHOD;    QUANTUM;    DYNAMICS;    RECONNECTION;    CONSERVATION;    REGIMES;    DECAY;   

DOI  :  10.1103/PhysRevB.103.144503

来源: SCIE

【 摘 要 】

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.

【 授权许可】

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