论文标题
与不连续的Galerkin方案的碎片化：非线性碎片化
Fragmentation with Discontinuous Galerkin schemes: Non-linear fragmentation
论文作者
论文摘要
小谷物在天体物理过程中起着至关重要的作用，例如化学，辐射转移，气体/灰尘动态。小晶粒的种群主要由碎裂过程由于碰撞而维持。在数值建模中需要准确处理灰尘碎片。但是，在3D模拟的条件下，用于求解碎片方程的当前算法遭受过度降低。为了应对这一挑战，我们开发了一种不连续的盖尔金方案，以有限的灰尘箱有效地解决非线性碎片方程。
Small grains play an essential role in astrophysical processes such as chemistry, radiative transfer, gas/dust dynamics. The population of small grains is mainly maintained by the fragmentation process due to colliding grains. An accurate treatment of dust fragmentation is required in numerical modelling. However, current algorithms for solving fragmentation equation suffer from an over-diffusion in the conditions of 3D simulations. To tackle this challenge, we developed a Discontinuous Galerkin scheme to solve efficiently the non-linear fragmentation equation with a limited number of dust bins.
