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| HAL : hal-00115279, version 1 |
| Fiche détaillée |  Récupérer au format |
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| Journal of Statistical Mechanics: Theory and Experiment (2006) P07012 (10 p.) |
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| Microgravity experiments on vibrated granular gases in a dilute regime: non-classical statistics |
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| Marc Leconte 1Yves Garrabos 2 |
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| (2006) |
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| We report on an experimental study of a dilute gas of steel spheres colliding inelastically and excited by a piston performing sinusoidal vibration, in low gravity. Using improved experimental apparatus, here we present some results concerning the collision statistics of particles on a wall of the container. We also propose a simple model where the non-classical statistics obtained from our data are attributed to the boundary condition playing the role of a 'velostat' instead of a thermostat. The significant differences from the kinetic theory of usual gas are related to the inelasticity of collisions. |
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| 1 : | Laboratoire de mécanique des sols, structures et matériaux (MSSMat) |
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CNRS : UMR8579 – Ecole Centrale Paris |
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| 2 : | Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) |
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CNRS : UPR9048 – Université de Bordeaux – Ecole Nationale Supérieure de Chimie, de Biologie et de Physique |
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| 3 : | Laboratoire de Physique de l'ENS Lyon (Phys-ENS) |
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CNRS : UMR5672 – École Normale Supérieure - Lyon |
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| 4 : | Service des Basses Températures (SBT) |
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CEA : DSM/INAC |
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| 5 : | Physique et mécanique des milieux hétérogenes (PMMH) |
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CNRS : UMR7636 – Université Pierre et Marie Curie [UPMC] - Paris VI – Université Paris VII - Paris Diderot – ESPCI ParisTech |
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| Domaine | : | Physique/Physique mathématique Mathématiques/Physique mathématique |
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| finite-size scaling – coarsening processes (experiment) – stochastic particle dynamics (experiment) – granular matter |
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| hal-00115279, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00115279 | |
| oai:hal.archives-ouvertes.fr:hal-00115279 | |
| Contributeur : Oualid Jouini | |
| Soumis le : Lundi 20 Novembre 2006, 20:05:40 | |
| Dernière modification le : Lundi 26 Mars 2007, 17:42:34 | |
