$^4$He Counterflow Differs Strongly from Classical Flows: Anisotropy on Small Scales
Other Condensed Matter
2019-04-17 v1
Abstract
Three-dimensional anisotropic turbulence in classical fluids tends towards isotropy and homogeneity with decreasing scales, allowing --eventually-- the abstract model of "isotropic homogeneous turbulence" to be relevant. We show here that the opposite is true for superfluid He turbulence in 3-dimensional counterflow channel geometry. This flow becomes less isotropic upon decreasing scales, becoming eventually quasi 2-dimensional. The physical reason for this unusual phenomenon is elucidated and supported by theory and simulations.
Keywords
Cite
@article{arxiv.1901.02215,
title = {$^4$He Counterflow Differs Strongly from Classical Flows: Anisotropy on Small Scales},
author = {L. Biferale and D. Khomenko and V. L'vov and A. Pomyalov and I. Procaccia and G. Sahoo},
journal= {arXiv preprint arXiv:1901.02215},
year = {2019}
}
Comments
5 pages, 3 figures