Superdiffusion of quantized vortices uncovering scaling laws in quantum turbulence

Y Tang, S Bao, W Guo - Proceedings of the National …, 2021 - National Acad Sciences
Generic scaling laws, such as Kolmogorov's 5/3 law, are milestone achievements of
turbulence research in classical fluids. For quantum fluids such as atomic Bose–Einstein …

Imaging quantized vortex rings in superfluid helium to evaluate quantum dissipation

Y Tang, W Guo, H Kobayashi, S Yui, M Tsubota… - Nature …, 2023 - nature.com
The motion of quantized vortices is responsible for many intriguing phenomena in diverse
quantum-fluid systems. Having a theoretical model to reliably predict the vortex motion …

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 …

Superfluid helium in three-dimensional counterflow differs strongly from classical flows: anisotropy on small scales

L Biferale, D Khomenko, V L'vov, A Pomyalov… - Physical review …, 2019 - APS
Three-dimensional anisotropic turbulence in classical fluids tends towards isotropy and
homogeneity with decreasing scales, allowing—eventually—the abstract model of …

Transient heat transfer of superfluid in nonhomogeneous geometries: Second sound, rarefaction, and thermal layer

S Bao, W Guo - Physical Review B, 2021 - APS
Transient heat transfer in superfluid He 4 (He II) is a complex process that involves the
interplay of the unique counterflow heat-transfer mode, the emission of second-sound …

Heat and mass transfer during a sudden loss of vacuum in a liquid helium cooled tube-Part III: Heat deposition in He II

N Garceau, S Bao, W Guo - International Journal of Heat and Mass Transfer, 2021 - Elsevier
A sudden loss of vacuum can be catastrophic for superconducting particle accelerators. In
such an event, air leaks into the liquid-helium-cooled accelerator beamline tube and …

Statistical properties of homogeneous and isotropic turbulence in He II measured via particle tracking velocimetry

Y Tang, S Bao, T Kanai, W Guo - Physical Review Fluids, 2020 - APS
Despite being a quantum two-fluid system, superfluid helium-4 (He II) is observed to behave
similarly to classical fluids when a flow is generated by mechanical forcing. This similarity …

The use of second sound in investigations of quantum turbulence in He II

E Varga, MJ Jackson, D Schmoranzer… - Journal of Low …, 2019 - Springer
Starting from a historic perspective, we discuss the use of second sound in experimental
investigations of quantized vorticity and quantum turbulence in the two-fluid temperature …

Boiling and cavitation caused by transient heat transfer in superfluid helium-4

H Sanavandi, M Hulse, S Bao, Y Tang, W Guo - Physical Review B, 2022 - APS
Superfluid helium-4 (He II) has been widely utilized as a coolant in various scientific and
engineering applications due to its superior heat transfer capability. An important parameter …

Eulerian and Lagrangian second-order statistics of superfluid grid turbulence

Y Tang, W Guo, VS L'vov, A Pomyalov - Physical Review B, 2021 - APS
We use particle-tracking velocimetry to study Eulerian and Lagrangian second-order
statistics of superfluid He 4 grid turbulence. The Eulerian energy spectra at scales larger …