Dresden 2017 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 56: Posters - Granular and Particulate Matter

DY 56.7: Poster

Thursday, March 23, 2017, 17:00–19:30, P1A

The effect of electrostatics on the clustering in granular gas — •Chamkor Singh, Stephan Herminghaus, and Marco G. Mazza — Max-Planck-Institut für Dynamik und Selbstorganisation, Göttingen

The ubiquity of granular materials around us makes them a subject of fundamental interest. Flows of such large ensembles of particles exhibit a range of peculiar physical behaviors such as spontaneous fluctuations, self-assembly, self-organized shocks and much more. The mechanisms behind are the dissipative collisions, short range cohesive forces and the ones which are still not well understood. One such phenomenon is the local electrostatic charging and discharging in the naturally occurring granular gas flows. We investigate its effects on the dynamics of granular gas by performing direct numerical simulations of hydrodynamic equations coupled with Maxwell equations. We analyze the influence of these long range forces on the clustering in the system. Finally, we compare the formation of clusters with and without the presence of electrostatic charges.