论文标题
对流次言积的三维模拟流向非旋转黑洞
Three Dimensional Simulations of Advective, Sub-Keplerian Accretion Flow onto Non-rotating Black Holes
论文作者
论文摘要
我们研究了使用三维，无粘性的水动力学仿真代码，研究亚忽然跨性别积分流到非旋转黑洞的时间演变。先前的二维模拟表明，积聚物质中的离心屏障可能会暂时停止几乎自由垂涎的物质，并产生一个稳定的，几何厚的磁盘，可能包含湍流的涡流。我们在这项工作中的目标是研究磁盘是否会发展出任何不稳定，因为当我们动态激活所有三个维度时，这种动荡。我们发现磁盘保持稳定和轴对称，甚至靠近中央黑洞。但是，如果我们明确应用非轴对称方位角扰动，则磁盘的轴对称结构将被破坏并发展不稳定。
We study the time evolution of sub-Keplerian transonic accretion flow onto a non-rotating black hole using a three-dimensional, inviscid hydrodynamics simulation code. Prior two-dimensional simulations show that centrifugal barrier in the accreting matter may temporarily halt the nearly free-falling matter and produce a stable, geometrically thick disk which may contain turbulent eddies. Our goal in this work is to investigate whether the disk develops any instability because of this turbulence when we dynamically activate all three dimensions. We find that the disk remains stable and axisymmetric even close to the central black hole. However, if we explicitly apply non-axisymmetric azimuthal perturbation, the axisymmetric structure of the disk is destroyed and instability is developed.
