Dynamic Phase Alignment in Navier-Stokes Turbulence
Fluid Dynamics
2022-01-12 v2 Plasma Physics
Abstract
In Navier-Stokes turbulence, energy and helicity injected at large scales are subject to a joint direct cascade, with both quantities exhibiting a spectral scaling . We demonstrate via direct numerical simulations that the two cascades are compatible due to the existence of a strong scale-dependent phase alignment between velocity and vorticity fluctuations, with the phase alignment angle scaling as .
Cite
@article{arxiv.2104.13518,
title = {Dynamic Phase Alignment in Navier-Stokes Turbulence},
author = {Lucio M. Milanese and Nuno F. Loureiro and Stanislav Boldyrev},
journal= {arXiv preprint arXiv:2104.13518},
year = {2022}
}