关于螺旋 Hall-MHD 湍流与涡旋作用的直接数值模拟
天体物理学
2009-11-10 v1
摘要
presented direct numerical simulations of turbulent Hall dynamos. The evolution of an initially weak and small scale magnetic field in a system maintained in a stationary turbulent regime by a stirring force at a macroscopic scale is studied to explore the conditions for exponential growth of the magnetic energy. Scaling of the dynamo efficiency with the Reynolds numbers is studied, and the resulting total energy spectra are found to be compatible with a Kolmogorov type law. A faster growth of large scale magnetic fields is observed at intermediate intensities of the Hall effect.
引用
@article{arxiv.astro-ph/0410274,
title = {Direct simulations of helical Hall-MHD turbulence and dynamo action},
author = {P. D. Mininni and D. O. Gómez and S. M. Mahajan},
journal= {arXiv preprint arXiv:astro-ph/0410274},
year = {2009}
}
备注
13 pages, 17 figures, ApJ (in press)