Particle Dynamics at the Onset of the Granular Gas-Liquid Transition
FISCHER, David
Otto-von-Guericke-Universität Magdeburg = Otto-von-Guericke University [Magdeburg] [OVGU]
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Otto-von-Guericke-Universität Magdeburg = Otto-von-Guericke University [Magdeburg] [OVGU]
Idioma
en
Article de revue
Este ítem está publicado en
Physical Review Letters. 2021-03-26, vol. 126, n° 12, p. 128002
American Physical Society
Resumen en inglés
We study experimentally the dynamical behavior of few large tracer particles placed in a quasi-2D granular “gas” made of many small beads in a low-gravity environment. Multiple inelastic collisions transfer momentum from ...Leer más >
We study experimentally the dynamical behavior of few large tracer particles placed in a quasi-2D granular “gas” made of many small beads in a low-gravity environment. Multiple inelastic collisions transfer momentum from the uniaxially driven gas to the tracers whose velocity distributions are studied through particle tracking. Analyzing these distributions for an increasing system density reveals that translational energy equipartition is reached at the onset of the gas-liquid granular transition corresponding to the emergence of local clusters. The dynamics of a few tracer particles thus appears as a simple and accurate tool to detect this transition. A model is proposed for describing accurately the formation of local heterogeneities.< Leer menos
Proyecto europeo
ESA Topical Team No. 4000103461
Orígen
Importado de HalCentros de investigación