Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
DY: Fachverband Dynamik und Statistische Physik
DY 25: Franco-German Session on Granular Matter II
DY 25.5: Vortrag
Dienstag, 10. März 2026, 15:00–15:15, HÜL/S186
Granular gases of non-convex particles: Experiments and numerical simulations — Torsten Trittel1,2, Mohammad Enezz1, Dmitry Puzyrev2, Kirsten Harth1, Raúl Cruz Hidalgo3, and •Ralf Stannarius1,2 — 1Brandenburg University of Applied Sciences, Brandenburg an der Havel, Germany — 2Otto von Guericke University Magdeburg, Magdeburg, Germany — 3University of Navarra, Pamplona, Spain
Granular gases are dilute ensembles of macroscopic particles that are not in permanent contact. Owing to the low packing fraction, they interact only by random inelastic collisions. Consequences are permanent dissipative loss of mechanical energy (granular cooling) and spontaneous clustering. Most experiments and numerical simulations so far considered spheres. The present study investigates spatial crosses (hexapods). They add more complexity in the particle interactions, and alter the role of the collisions in the exchange of translational and rotational kinetic energies. We present experiments performed in microgravity on a suborbital rocket flight [1], demonstrate particle tracking from the optical video data [2], and show results of DEM simulations of these systems. The study is funded within by DLR within projects EVA-II and JACKS (50WK2348, 50WM2340).
[1] https://sscspace.com/six-science-projects-to-space-from-sweden/
[2] A. Niemann et al., JOSS 10(109), 5986 (2025)
Keywords: Granular gases; Microgravity; Experiments and simulation; Suborbital rocket flight