Orthogonal and antiparallel vortex tubes and energy cascades in quantum turbulence

Tsuyoshi Kadokura and Hiroki Saito
Phys. Rev. Fluids 3, 104606 – Published 17 October 2018
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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.

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  • Received 7 July 2018

DOI:https://doi.org/10.1103/PhysRevFluids.3.104606

©2018 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Fluid DynamicsCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Tsuyoshi Kadokura and Hiroki Saito

  • Department of Engineering Science, University of Electro-communications, Tokyo 182-8585, Japan

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Issue

Vol. 3, Iss. 10 — October 2018

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