Abstract Discrete element simulations of agglomerates impacting other agglomerates and agglomerates impacting a wall have been carried out. The agglomerates consist of multiple, small primary particles. In the simulations, we have varied the adhesiveness of the primary particles, the agglomerate size, as well as the impact velocity of the impact. The quantitative trends in the results from the simulations have been captured by a dimensional analysis of the problem, and the resulting fit of a resolved, micro-scale modelling of the impacts has been used to construct a macro-scale discrete fragmentation model to describe agglomerate fragmentation using the framework of the discrete element model, but without the necessity of elucidating the behaviour of each individual primary particle. The working of the discrete fragmentation model has been validated with the results from the detailed micro-scale simulations.

中文翻译：

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团聚体破碎的分析、建模和模拟

摘要 已经进行了团块撞击其他团块和团块撞击墙壁的离散元模拟。附聚物由多个小的初级粒子组成。在模拟中，我们改变了初级粒子的粘附性、团聚体尺寸以及冲击的冲击速度。模拟结果的定量趋势已通过问题的维度分析获得，并且已解决的影响微观尺度建模的结果拟合已被用于构建宏观尺度离散破碎模型来描述团聚体使用离散元素模型的框架进行碎裂，但无需阐明每个单独的初级粒子的行为。