Abstract
We have investigated aggregation phenomena in a suspension composed of disk-like hematite particles by means of Brownian dynamics simulations. We have investigated the influence of the magnetic particle-field and the particleparticle interactions, shear rate and the volumetric fraction of particles on particle aggregation phenomena. The significant column-like clusters are formed at a magnetic particle-particle interaction much larger than in the case of a magnetic spherical particle suspension. This is because the rotational Brownian motion has a significant influence on the formation of clusters for a suspension composed of disk-like particles with large aspect ratio. An applied magnetic field is found to decrease the formation of column-like clusters. A shear flow is found not to have a significant influence on the internal structures of clusters, but it does influence on the cluster size distribution of the column-like clusters.
