Author(s)

T. Bosse, C. Härtel, E. Meiburg & L. Kleiser

Abstract

This paper reports on numerical simulations of fluid-particle interactions in suspension drops settling in a fluid. A suspension drop is an initially spherical cloud of dispersed particles, which are suspended in initially quiescent fluid. Under the influence of gravity the drop settles down. We performed a systematic study of the settling behavior at moderate drop Reynolds numbers Re (based on drop settling velocity and drop radius) ranging from Re = 1 to Re = 100. In these cases the drop develops into a torus that eventually breaks up into secondary blobs. We show that the number of secondary blobs strongly depends on the Reynolds number. Besides studying the physical processes during droplet break-up, we in

Keywords