Merging of ensambles of rotlets

B. Shinde - A. Cēbers

MMML Lab, Faculty of Physics and Mathematics, University of Latvia, 3 Jelgavas str., Riga LV-1004, Latvia

Abstract
We present a two-dimensional numerical simulation to study the behavior of two ensembles of rotlets. Initially, we examined a scenario in which the model was based solely on hydrodynamic interactions between particles. This preliminary analysis revealed that an ensemble of rotlets revolves around each other, similar to two rotlets rotating around a stable center of mass, and traces circular trajectories. This behavior was then compared with theoretical predictions. Subsequently, the repulsive forces were incorporated into the model. In this new system, two ensembles initially rotated around each other. Over time, they merge, which results in a single-ordered rotating structure. The eventual configuration obtained depends on the initial distance separating the ensembles, either a stable hexagonal ordered structure or a disordered structure, which is characterized by the hexatic order parameter. Figs 14, Refs 8.