Particle concentration in quantum turbulence
Published in Physical Review Fluids
Particles are today the main tool to study superfluid turbulence and visualize quantum vortices. This work studies the dynamics of inertial particles in finite-temperature quantum turbulence in the framework of the two-fluid Hall-Vinen-Bekarevich-Khalatnikov model. It is revealed that, at low temperatures, when the superfluid mass fraction is dominant, particles cluster on superfluid vortex filaments regardless of their physical properties as it is shown in the figure. Furthermore, under strong counterflow, the flow is dominated by quasi-two-dimensional large-scale structures that govern the spatial distribution of particles.