Two-fluid dust and gas mixtures in smoothed particle hydrodynamics II: an improved semi-implicit approach

Two-fluid dust and gas mixtures in smoothed particle hydrodynamics II: an improved semi-implicit approach
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平滑粒子流体动力学中的双流体灰尘和气体混合物 II:改进的半隐式方法

DOI:
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发表时间:
2015
期刊:
影响因子:
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通讯作者:
M. Bate
M. Bate
中科院分区:
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文献类型:
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作者:
P. Lorén;M. Bate

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我们提出了Loren-Aguilar & Bate(2014)方法的改进版本,以整合双流体尘埃/气体方程,该方程在尘埃和气体加速度之间存在净差(不包括拖曳力)的情况下正确捕获小颗粒的极限速度。一系列的加速DUSTYBOX测试和模拟尘埃沉降在原行星盘进行比较的新老方法的性能。改进后的方法能够准确地捕捉到正确的极限速度,同时保持了原方法的所有守恒性质。
We present an improved version of the Loren-Aguilar & Bate (2014) method to integrate the two-fluid dust/gas equations that correctly captures the limiting velocity of small grains in the presence of net differences (excluding the drag force) between the accelerations of the dust and the gas. A series of accelerated DUSTYBOX tests and a simulation of dust-settling in a protoplanetary disc are performed comparing the performance of the new and old methods. The modified method can accurately capture the correct limiting velocity while preserving all the conservation properties of the original method.
气体和粉尘混合物的平滑颗粒流体动力学模拟
DOI: 10.1093/mnras/stv1486
发表时间: 2015
影响因子: 4.8
作者:
Booth R
通讯作者: Booth R