4 papers
Intermittency of velocity circulation in quantum turbulence
Nicolás P. Müller, Juan Ignacio Polanco, Giorgio Krstulovic
The velocity circulation, a measure of the rotation of a fluid within a closed path, is a fundamental observable in classical and quantum flows. It is indeed a Lagrangian invariant…
Counterflow-Induced Inverse Energy Cascade in Three-Dimensional Superfluid Turbulence
Juan Ignacio Polanco, Giorgio Krstulovic
Finite-temperature quantum turbulence is often described in terms of two immiscible fluids that can flow with a non-zero mean relative velocity. Such out-of-equilibrium state is kn…
Inhomogeneous distribution of particles in co-flow and counterflow quantum turbulence
Juan Ignacio Polanco, Giorgio Krstulovic
Particles are today the main tool to study superfluid turbulence and visualize quantum vortices. In this work, we study the dynamics and the spatial distribution of particles in co…
Relative dispersion of particle pairs in turbulent channel flow
Juan Ignacio Polanco, Ivana Vinkovic, Nickolas Stelzenmuller +2
Lagrangian tracking of particle pairs is of fundamental interest in a large number of environmental applications dealing with contaminant dispersion and passive scalar mixing. The…