Non-perturbative statistical theory of intermittency in ITG drift wave turbulence with zonal flows
Plasma Physics
2015-05-13 v2
Abstract
The probability distribution functions (PDFs) of momentum flux and zonal flow formation in ion-temperature-gradient (ITG) turbulence are investigated, including the effect of the shear flow on the PDFs. While ITG turbulence maintains high level of transport, this may be suppressed by shear flow. Zonal flows are also shown here to have an enhanced likelihood of generation further from marginal stability which will then regulate the ITG turbulence, which is more prominent with increased shear flow, leading to a self-regulating system.
Keywords
Cite
@article{arxiv.0901.1996,
title = {Non-perturbative statistical theory of intermittency in ITG drift wave turbulence with zonal flows},
author = {Johan Anderson and Eun-jin Kim},
journal= {arXiv preprint arXiv:0901.1996},
year = {2015}
}
Comments
29 pages, 3 figures