Aspect Ratio Dependence in Magnetorotational Instability Shearing Box Simulations
Aspect Ratio Dependence in Magnetorotational Instability Shearing Box Simulations
复制标题
磁旋转不稳定剪切箱模拟中的纵横比依赖性
DOI：
10.1051/0004-6361:200809730
复制
发表时间：
2008
影响因子：
6.5
通讯作者：
A. Ferrari
中科院分区：
文献类型：
--
作者：
G. Bodo;A. Mignone;Fausto Cattaneo;P. Rossi;A. Ferrari
本文对具有非零净磁通的剪切盒近似下的磁旋转不稳定性进行了三维数值模拟。通过改变计算域的大小在径向方向上相对于垂直框的高度，我们发现，在协议与以前的研究，运输的角动量（与所谓的“通道解决方案”）是强烈间歇性和最大化的单位纵横比的箱子。另一方面，在具有较大纵横比的盒子中，间歇性行为消失，并且角动量传输被抑制。
Three-dimensional numerical simulations of the magnetorotational instability in the shearing box approximation with a nonzero net flux are presented. By changing the size of the computational domain in the radial direction relative to the vertical box height, we find, in agreement with previous studies, that transport of angular momentum (associated with the so-called “channel solution”) is strongly intermittent and maximized for boxes of unit aspect ratio. On the other hand, in boxes with larger aspect ratio the intermittent behavior disappears and angular momentum transport is inhibited.