Unconvergence of very-large-scale giant impact simulations
Unconvergence of very-large-scale giant impact simulations
复制标题
超大规模巨大撞击模拟的不收敛
DOI：
10.1093/pasj/psw131
复制
发表时间：
2017
影响因子：
2.3
通讯作者：
Makino Junichiro
中科院分区：
文献类型：
--
作者：
Hosono Natsuki;Iwasawa Masaki;Tanikawa Ataru;Nitadori Keigo;Muranushi Takayuki;Makino Junichiro
巨撞击假说是行星科学和地球科学中最重要的假说之一，因为它与月球的起源和地球的初始状态有关。采用光滑粒子流体动力学（SPH）方法进行了大量的数值模拟。然而，GI假说目前正处于危机之中。“典型”的GI方案未能解释地球和月球之间相同的同位素比例。另一方面，对GI模拟结果的可靠性知之甚少。在本文中，我们讨论了分辨率对GI模拟结果的影响，通过改变粒子的数量从。我们发现，结果并不收敛，但显示振荡行为。我们讨论这种振荡行为的起源。
The giant impact (GI) is one of the most important hypotheses both in planetary science and geoscience, since it is related to the origin of the Moon and also the initial condition of the Earth. A number of numerical simulations have been done using the smoothed particle hydrodynamics (SPH) method. However, GI hypothesis is currently in a crisis. The "canonical" GI scenario failed to explain the identical isotope ratio between the Earth and the Moon. On the other hand, little has been known about the reliability of the result of GI simulations. In this paper, we discuss the effect of the resolution on the results of the GI simulations by varying the number of particles fromto. We found that the results does not converge, but shows oscillatory behaviour. We discuss the origin of this oscillatory behaviour.
影响因子：
2.3
作者：
Iwasawa, Masaki;Tanikawa, Ataru;Makino, Junichiro
通讯作者：
Makino, Junichiro
月球形成撞击和撞击后演化的高分辨率模拟
DOI：
--
发表时间：
2006
期刊：
影响因子：
--
作者：
K. Wada;E. Kokubo;J. Makino
通讯作者：
J. Makino