论文标题
一种平滑的粒子流体动力学算法，用于具有单独颗粒的多流层灰尘
A smoothed particle hydrodynamics algorithm for multigrain dust with separate sets of particles
论文作者
论文摘要
我们提出了一种模拟气体和多种大型stokes数量尘埃谷物的动力学的方法，该粉尘晶粒的典型是进化的原球盘和碎屑盘的典型代表。该方法通过捕获气体上多种灰尘物种的差异反应来改善早期方法，其中只能表示单个晶粒大小。对于大型尘埃气（可能会预期）在原球门椎间盘寿命的后期，这种效果更大。我们基准针对粉尘混合物中线性波，阻力和冲击的分析溶液进行基准测试，以及在原星盘中的径向漂移，表明该方法是可靠且准确的。
We present a method for simulating the dynamics of a mixture of gas and multiple species of large Stokes number dust grains, typical of evolved protoplanetary discs and debris discs. The method improves upon earlier methods, in which only a single grain size could be represented, by capturing the differential backreaction of multiple dust species on the gas. This effect is greater for large dust-to-gas ratios that may be expected in the later stages of the protoplanetary disc life. We benchmark the method against analytic solutions for linear waves, drag and shocks in dust-gas mixtures, and radial drift in a protoplanetary disc showing that the method is robust and accurate.
