Grid superfluid turbulence and intermittency at very low temperature

Abstract

Low-temperature grid generated turbulence is investigated by using numerical simulations of the Gross-Pitaevskii equation. The statistics of regularized velocity increments are studied. Increments of the incompressible velocity are found to be skewed for turbulent states. Results are later confronted with the (quasi) homogeneous and isotropic Taylor-Green flow, revealing the universality of the statistics. For this flow, the statistics are found to be intermittent and a Kolmogorov constant close to the one of classical fluid is found for the second order structure function.

References in corpus (5)

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Cited by in corpus (11)

• Intermittency of velocity circulation in quantum turbulence
• Intermittency of quantum turbulence with superfluid fractions from 0% to 96%
• Stability of interlinked neutron vortex and proton flux tube arrays in a neutron star. II. Far-from-equilibrium dynamics
• Turbulent statistics and intermittency enhancement in coflowing superfluid ${}^4$He
• Critical velocity for vortex nucleation and roton emission in a generalized model for superfluids
• Active and finite-size particles in decaying quantum turbulence at low temperature
• Disentangling temperature and Reynolds number effects in quantum turbulence
• Higher-order statistics and intermittency of a two-fluid HVBK quantum turbulent flow
• Theory of anisotropic superfluid He-4 counterflow turbulence
• Spontaneous Quantum Turbulence in a Newborn Bose-Einstein Condensate via the Kibble-Zurek Mechanism
• Reply to "Comment on 'Theoretical analysis of quantum turbulence using the Onsager ideal turbulence theory'"