On the Angular Momentum Transport Associated with Convective Eddies in Accretion Disks
On the Angular Momentum Transport Associated with Convective Eddies in Accretion Disks
复制标题
吸积盘中与对流涡流相关的角动量输运
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
D. Lin
中科院分区：
文献类型：
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作者：
W. Kley;J. Papaloizou;D. Lin
原恒星盘在垂直于盘平面的方向上对热对流本质上是不稳定的。由于有效圆盘粘性的起源是未知的，因此研究对流对角动量输运的影响具有重要的理论意义。为了研究这种效应，我们在这里提出的直接二维模拟结果的可压缩对流在轴对称吸积盘。为了使问题易于处理，使用了基本粘度（可能是由于剪切不稳定性和/或较小尺度对流），使得计算是针对10倍于临界稳定性临界值的瑞利数进行的
Protostellar disks are intrinsically unstable against thermal convection in the direction normal to the plane of the disk. Because the origin of effective disk viscosity is unknown it is of great theoretical interest to investigate the effect of convection on the transport of angular momentum. To study this effect we present here results of direct two-dimensional simulations of compressible convection in axisymmetric accretion disks. In order to make the problem tractable an underlying viscosity (possibly due to shear instabilities and/or smaller scale convection) is used such that the calculations are performed for a Rayleigh number 10 times the critical value for marginal stability