• Rapid Communication

Inhomogeneous distribution of particles in coflow and counterflow quantum turbulence

Juan Ignacio Polanco and Giorgio Krstulovic
Phys. Rev. Fluids 5, 032601(R) – Published 11 March 2020

Abstract

Particles are today the main tool to study superfluid turbulence and visualize quantum vortices. In this Rapid Communication, we study the dynamics and the spatial distribution of particles in coflow and counterflow superfluid helium turbulence in the framework of the two-fluid Hall-Vinen-Bekarevich-Khalatnikov (HVBK) model. We perform three-dimensional numerical simulations of the HVBK equations along with the particle dynamics that depends on the motion of both fluid components. We find that, at low temperatures, where the superfluid mass fraction dominates, particles strongly cluster in vortex filaments regardless of their physical properties. At higher temperatures, as viscous drag becomes important and the two components become tightly coupled, the clustering dynamics in the coflowing case approach those found in classical turbulence, while under strong counterflow, the particle distribution is dominated by the quasi-two-dimensionalization of the flow.

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  • Received 15 November 2019
  • Accepted 26 February 2020

DOI:https://doi.org/10.1103/PhysRevFluids.5.032601

©2020 American Physical Society

Physics Subject Headings (PhySH)

Fluid DynamicsCondensed Matter, Materials & Applied PhysicsStatistical Physics & Thermodynamics

Authors & Affiliations

Juan Ignacio Polanco and Giorgio Krstulovic

  • Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France

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Issue

Vol. 5, Iss. 3 — March 2020

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