Thermal convection in accretion disks
Thermal convection in accretion disks
复制标题
吸积盘中的热对流
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
H. Klahr
中科院分区：
文献类型：
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作者：
H. Klahr
摘要长期以来，人们认为热对流可以作为吸积盘中湍流和角动量输运的驱动机制。即使同时接受对流不得不把这一作用留给磁旋转不稳定性，它仍然是现实处理吸积盘时产生的一个重要效应，即具有适当的热力学和辐射输运。我们回顾了天体物理盘热对流的历史，并显示了相关的分析和数值计算工作，包括能量传输的对流和“负”雷诺应力的影响。我们也将把对流不稳定性的背景下的磁旋转不稳定性和行星盘相互作用。
Abstract For a long time it was believed that thermal convection could serve as the driving mechanism for turbulence and angular momentum transport in accretion disks. Even it is meanwhile accepted that convection had to leave that role to the magneto rotational instability, it is still an important effect arising in a realistic treatment of accretion disks, i.e. with proper thermodynamics and radiation transport. We review the history of thermal convection in astrophysical disks and show the relevant analytic and numerical work, including energy transport by convection and the effect of “negative” Reynolds stresses. We will also place the convective instability into the context of the magnetorotational instability and planet–disk interaction.