Hydraulic/Shock Jumps in Protoplanetary Disks

Hydraulic/Shock Jumps in Protoplanetary Disks
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原行星盘中的液压/冲击跳跃

DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
R. Durisen
R. Durisen
中科院分区：
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文献类型：
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作者：
A. Boley;R. Durisen

文献摘要

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本文描述了原行星盘中螺旋激波的非线性结果。螺旋激波，对于大多数原行星盘的条件下，创建一个损失的垂直力平衡在postshock区域，并导致快速膨胀的气体垂直于磁盘的中平面。这种膨胀具有类似于在不可压缩流体中发生的水力跃变的特性。我们提出了一个理论来描述这些混合动力之间的冲击和水跃（冲击孔）的行为，然后比较理论的三维流体动力学模拟。我们将讨论激波孔产生的全三维激波结构，并讨论圆盘混合、湍流和固体演化的可能后果。
In this paper, we describe the nonlinear outcome of spiral shocks in protoplanetary disks. Spiral shocks, for most protoplanetary disk conditions, create a loss of vertical force balance in the postshock region and result in rapid expansion of the gas perpendicular to the disk midplane. This expansion has characteristics similar to hydraulic jumps, which occur in incompressible fluids. We present a theory to describe the behavior of these hybrids between shocks and hydraulic jumps (shock bores) and then compare the theory to three-dimensional hydrodynamics simulations. We discuss the fully three-dimensional shock structures that shock bores produce and discuss possible consequences for disk mixing, turbulence, and evolution of solids.