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DY: Fachverband Dynamik und Statistische Physik
DY 48: Granular Matter and Contact Dynamics
DY 48.5: Talk
Thursday, March 21, 2024, 16:00–16:15, BH-N 128
Heating and cooling in a granular gas of spheres in microgravity — •Mahdieh Mohammadi1,3, Torsten Trittel1,3, Raul Cruz Hidalgo2, Dmitry Puzyrev3, Adrian Niemann4, Ralf Stannarius1,3,4, and Kirsten Harth1,3 — 1Department of Engineering, Brandenburg University of Applied Sciences, Magdeburger Str. 50, 14770 Brandenburg an der Havel,Germany — 2Departamento de Física y Matemática Aplicada, Facultad de Ciencias , Universidad de Navarra, Pamplona, Spain — 3MTRM, Otto von Guericke University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany — 4Institute of Physics, Otto von Guericke University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
We investigate the dynamic characteristics pertaining to the cooling and heating processes of particles in a microgravity environment. A comprehensive analysis, facilitated by simulations conducted across various regimes with a consistent restitution coefficient and varying friction coefficients, has been undertaken. The determination of characteristic times for the cooling and heating phases is established through an assessment of the system's dynamical parameters. Distinct trends are observed in the attitudes of mean translational and rotational energies within the ensemble of particles during both the cooling and heating phases.
Keywords: granular gases; velocity distributions; research in microgravity; many-particle systems; granular cooling