Two-dimensional magnetohydrodynamic turbulence with large and small energy-injection length scales
Fluid Dynamics
2019-06-27 v1 Chaotic Dynamics
Abstract
Two-dimensional magnetohydrodynamics (2D MHD), forced at (a) large length scales or (b) small length scales, displays turbulent, but statistically steady, states with widely different statistical properties. We present a systematic, comparative study of these two cases (a) and (b) by using direct numerical simulations (DNSs). We find that, in case (a), there is energy equipartition between the magnetic and velocity fields, whereas, in case (b), such equipartition does not exist. By computing various probability distribution functions (PDFs), we show that case (a) displays extreme events that are much less common in case (b).
Keywords
Cite
@article{arxiv.1903.11160,
title = {Two-dimensional magnetohydrodynamic turbulence with large and small energy-injection length scales},
author = {Debarghya Banerjee and Rahul Pandit},
journal= {arXiv preprint arXiv:1903.11160},
year = {2019}
}