The transient coarsening behavior of poly-disperse particles that aggregate into clusters was studied using a phase-field model in two dimensions. The effects of two characters of the cluster, i.e. , particle number N c and particle density ρ c in a cluster, on the kinetics of transient coarsening are systematically investigated. The transient coarsening experiences two stages: the merging of multiple particles in a cluster into a single particle and further evolution towards the steady state. The evolutions of the scaled particle size distribution and the coarsening rate are non-monotonic during the transient stage. The length of the transient stage for the system with uniform cluster size increases with N c but is insensitive to ρ c . Reducing the cluster size homogenization can shorten the transient stage. Moreover, if the coarsening time is scaled by the moment at which multiple particles in all clu...

中文翻译：

---

初始粒子聚集对瞬态粗化行为影响的相场研究

使用二维的相场模型研究了聚集成簇的多分散颗粒的瞬态粗化行为。系统地研究了团簇的两个特征，即团簇中的粒子数N c和粒子密度ρc，对瞬态粗化动力学的影响。瞬态粗化经历两个阶段：将簇中的多个粒子合并为单个粒子，并进一步演化为稳态。在过渡阶段，成比例的粒度分布和粗化速率的演变是非单调的。具有均匀簇大小的系统的过渡阶段长度随N c的增加而增加，但对ρc不敏感。减少簇大小均匀化可以缩短过渡阶段。此外，