Phase transition or Maxwell's demon in Granular gas?

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dc.creatorJean, P.
dc.creatorBellenger, H.
dc.creatorBurban, P.
dc.creatorPonson, L.
dc.creatorEvesque, P.
dc.date2005-06-23
dc.date.accessioned2026-07-07T03:05:45Z
dc.date.available2026-07-07T03:05:45Z
dc.descriptionDynamics of vibro-fluidised granular gas is investigated experimentally using the transfer of grains from a compartment through a horizontal slit at a given height h . It is demonstrated that the transfer rate j varies linearly with the grain number N in the box when N remains small; however j(N) becomes strongly non linear as soon as the number n of layers is larger than 0.3; dj/dN becomes negative for n>0.4.It is found also that the maximum of j(N) increases slightly with the acceleration af_ of the vibration which excites the granular gas. Using dynamical system theory, dynamics equations are written, and a critical bifurcation is found, which explains the existence of a condensation and of a phase transition. This explains how the pseudo " Maxwell's demon" works in granular gases. This experiments contradicts recent modeling . Pacs # : 5.40 ; 45.70 ; 62.20 ; 83.70.Fn
dc.description13 pages + 1 page, 9 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0506590
dc.identifierhttp://arxiv.org/abs/cond-mat/0506590
dc.identifierPoudres & Grains 13, 27-39, (2002), ISSN 1257-3957
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26567
dc.subjectSoft Condensed Matter
dc.titlePhase transition or Maxwell's demon in Granular gas?
dc.typetext

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