涡场中黏附性颗粒团聚体粒径分布的预测

We develop a physical and computational method to directly simulate the flocculation of cohesive particles in cellular flow fields by one-way coupling. The cellular flow consists of Taylor- Green vortices and has been proved to be a simple but robust analytical framework for the study of turbulence, it can capture key features of vortical effects on particles. Our numerical method can separately consider the cohesion, lubrication and direct contact forces for each pair of particles, thereby allowing us to conduct a detailed analysis of their influences on the flocculation process in vortices. By comparing with our numerical results, a previous model based on the Monte Carlo Method is recommended to predict the floc size distribution.