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On the excitation of hydrodynamical turbulence in accretion discs

机译:关于吸收椎间盘中流体动力湍流的激发

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Our 2D numerical simulations confirm a possibility of excitation of hydrodynamic turbulence in the accretion disk due to shear instability under finite-amplitude perturbations and at high Reynolds number. These results disproves the well-known claims about the impossibility to excite the turbulence in accretion disks by hydrodynamic shear instability. Our estimations have shown that the development of turbulence results in the value of accretion rate corresponding to the SS-coefficient in the range 0.08 ÷ 0.15.
机译:我们的2D数值模拟通过在有限幅度扰动和高雷诺数下,确认由于剪切不稳定性和高雷诺数,确认了在吸积盘中的流体动力湍流的可能性。这些结果使众所周知的权利要求反对通过流体动力学剪切不稳定性激发增生盘中的湍流的不可能。我们的估计表明,湍流的发展导致对应于0.08×0.15范围内的SS系数的增生率的值。

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