Non-locality of Hydrodynamic and Magnetohydrodynamic Turbulence
Earth and Planetary Astrophysics
2015-05-18 v1 Solar and Stellar Astrophysics
Abstract
We compare non-locality of interactions between different scales in hydrodynamic (HD) turbulence and magnetohydrodynamic (MHD) turbulence in a strongly magnetized medium. We use 3-dimensional incompressible direct numerical simulations to evaluate non-locality of interactions. Our results show that non-locality in MHD turbulence is much more pronounced than that in HD turbulence. Roughly speaking, non-local interactions count for more than 10\% of total interactions in our MHD simulation on a grid of points. However, there is no evidence that non-local interactions are important in our HD simulation with the same numerical resolution. We briefly discuss how non-locality affects energy spectrum.
Keywords
Cite
@article{arxiv.1005.0878,
title = {Non-locality of Hydrodynamic and Magnetohydrodynamic Turbulence},
author = {Jungyeon Cho},
journal= {arXiv preprint arXiv:1005.0878},
year = {2015}
}
Comments
6 pages, 5 figures