Numerical studies of quantum turbulence

M Tsubota, K Fujimoto, S Yui - Journal of Low Temperature Physics, 2017 - Springer
We review numerical studies of quantum turbulence. Quantum turbulence is currently one of
the most important problems in low temperature physics and is actively studied for superfluid …

Fully Coupled Two-Fluid Dynamics in Superfluid : Anomalous Anisotropic Velocity Fluctuations in Counterflow

S Yui, H Kobayashi, M Tsubota, W Guo - Physical review letters, 2020 - APS
We investigate the thermal counterflow of the superfluid He 4 by numerically simulating
three-dimensional fully coupled dynamics of the two fluids, namely quantized vortices and a …

[HTML][HTML] A new self-consistent approach of quantum turbulence in superfluid helium

L Galantucci, AW Baggaley, CF Barenghi… - The European Physical …, 2020 - Springer
We present the Fully cOUpled loCAl model of sUperfLuid Turbulence (FOUCAULT) that
describes the dynamics of finite temperature superfluids. The superfluid component is …

Dissipation in quantum turbulence in superfluid above 1 K

J Gao, W Guo, S Yui, M Tsubota, WF Vinen - Physical Review B, 2018 - APS
There are two commonly discussed forms of quantum turbulence in superfluid He 4 above 1
K: in one there is a random tangle of quantized vortex lines, existing in the presence of a …

Three-Dimensional Coupled Dynamics of the Two-Fluid Model in Superfluid : Deformed Velocity Profile of Normal Fluid in Thermal Counterflow

S Yui, M Tsubota, H Kobayashi - Physical review letters, 2018 - APS
The coupled dynamics of the two-fluid model of superfluid He 4 is numerically studied for
quantum turbulence of the thermal counterflow in a square channel. We combine the vortex …

Small-scale universality of particle dynamics in quantum turbulence

M La Mantia, P Švančara, D Duda, L Skrbek - Physical Review B, 2016 - APS
We show that, in turbulent two-fluid flows of superfluid He 4, the statistically described
dynamics of small particles suspended in the liquid does not depend on the type of imposed …

Second-sound studies of coflow and counterflow of superfluid 4He in channels

E Varga, S Babuin, L Skrbek - Physics of fluids, 2015 - pubs.aip.org
We report a comprehensive study of turbulent superfluid 4 He flow through a channel of
square cross section. We study for the first time two distinct flow configurations with the same …

Counterflow quantum turbulence of He-II in a square channel: Numerical analysis with nonuniform flows of the normal fluid

S Yui, M Tsubota - Physical Review B, 2015 - APS
We perform a numerical analysis of counterflow quantum turbulence of superfluid He 4 with
nonuniform flows by using the vortex filament model. In recent visualization experiments …

Particle dynamics in wall-bounded thermal counterflow of superfluid helium

M La Mantia - Physics of Fluids, 2017 - pubs.aip.org
The motions of relatively small particles in wall-bounded thermal counterflow of superfluid
helium are experimentally investigated, above 1 K, by using the particle tracking velocimetry …

Spherically symmetric formation of localized vortex tangle around a heat source in superfluid

S Inui, M Tsubota - Physical Review B, 2020 - APS
We study the dynamical process of the vortex tangle development under a spherically
symmetric thermal counterflow around a heat source submerged into a bulk superfluid He 4 …