Energy spectra of quantum turbulence: Large-scale simulation and modeling

Article

关键词: HIGH REYNOLDS-NUMBER;    NUMERICAL SIMULATIONS;    SUPERFLUID TURBULENCE;    KOLMOGOROV TURBULENCE;    ISOTROPIC TURBULENCE;    DISSIPATION;    SYMMETRIES;    CONSTANT;   

DOI  :  10.1103/PhysRevB.84.054525

来源: SCIE

【 摘 要 】

In a 2048(3) simulation of quantum turbulence within the Gross-Pitaevskii equation, it is demonstrated that the large-scale motions have a classical Kolmogorov-1941 energy spectrum E(k) proportional to k(-5/3), followed by an energy accumulation with E(k) similar or equal to const at k about the reciprocal mean intervortex distance. This behavior was predicted by the L'vov-Nazarenko-Rudenko bottleneck model of gradual eddy-wave crossover [L'vov, Nazarenko, and Rudenko, J. Low Temp. Phys. 153, 140 (2008)], further developed in the paper.

【 授权许可】

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