Is Dissipative Granular Gas in Knudsen Regime Excited by Vibration Biphasic ?
| dc.creator | Evesque, P. | |
| dc.date | 2005-06-23 | |
| dc.date.accessioned | 2026-07-07T03:05:46Z | |
| dc.date.available | 2026-07-07T03:05:46Z | |
| dc.description | Compatibility between a recent model (Poudres & Grains 15, 1-17, (2005)) of vibrated granular dissipative gas and recent experimental results in micro-gravity is investigated. It is found a good agreement for the distribution of impacts, which is found to vary exponentially as P(mv) = exp-(v/vo), both experimentally and theoretically; hence it confirms the distribution f(v) of speeds varying as (1/v) exp(-v/vo). However, some discrepancy is found for the variation of the total number of impacts with the number of balls contained in the cell. This is attributed to the existence of a second phase of balls "nearly at rest". Compatibility between results from granular gas experiments in micro-gravity and experiments on Maxwell's demon in 1-g is also discussed. The main idea, which allows understanding these results is to consider the piston as playing the role of an impact generator or of a "velostat" instead of a thermostat. It is shown also that the model predicts completely different behaviours in 1g and in 0g. Pacs # : 05.45.-a, 45.50.-j, 45.70.-n, 81.70.Bt, 81.70.Ha, 83.10.Pp | |
| dc.description | 17 pages + 1 page, 3 Figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0506618 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0506618 | |
| dc.identifier | Poudres & Grains 15, 18-34, (2005), ISSN 1257-3957 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/26573 | |
| dc.subject | Soft Condensed Matter | |
| dc.title | Is Dissipative Granular Gas in Knudsen Regime Excited by Vibration Biphasic ? | |
| dc.type | text |