Orthogonal and antiparallel vortex tubes and energy cascades in quantum turbulence
Quantum Gases
2018-07-17 v1 Fluid Dynamics
Abstract
We investigate the dynamics of energy cascades in quantum turbulence by directly observing the vorticity distributions in numerical simulations of the Gross-Pitaevskii equation. By Fourier filtering each scale of the vorticity distribution, we find that antiparallel vortex tubes at a large scale generate small-scale vortex tubes orthogonal to those at the large scale, which is a manifestation of the energy cascade from large to small scales. We reveal the dynamics of quantized vortex lines in these processes.
Keywords
Cite
@article{arxiv.1807.05332,
title = {Orthogonal and antiparallel vortex tubes and energy cascades in quantum turbulence},
author = {Tsuyoshi Kadokura and Hiroki Saito},
journal= {arXiv preprint arXiv:1807.05332},
year = {2018}
}
Comments
10 pages, 5 figures