2d Granular Gas in Knudsen Regime and in Microgravity Excited by Vibration: Velocity and Position Distributions
文献类型：期刊论文
| 作者 | Hou, M ; Liu, R ; Li, Y ; Lu, K ; Garrabos, Y ; Evesque, P |
| 刊名 | POWDERS AND GRAINS 2009
 |
| 出版日期 | 2009 |
| 卷号 | 1145页码:67 |
| 关键词 | LOW GRAVITY STATISTICS |
| ISSN号 | 0094-243X |
| 通讯作者 | Hou, M: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | Dynamics of quasi-2d dissipative granular gas is studied in microgravity condition (of the order of 10(-4) g) in the limit of Knudsen regime. The gas, made of 4 spheres, is confined in a square cell enforced to follow linear sinusoidal vibration in ten different vibration modes. The trajectory of one of the particles is tracked and reconstructed from the 2-hour video data. From statistical analysis, we find that (i) loss due to wall friction is small, (ii) trajectory looks ergodic in space, and (iii) distribution p(v) of speed follows an exponential distribution, i.e. p(v)approximate to exp(-v/v(xo,yo)), with v(xo,yo) being a characteristic velocity along a direction parallel (y) or perpendicular (x) to vibration direction. This law deviates strongly from the Boltzmann distribution of speed in molecular gas. Comparisons of this result with previous measurements in earth environment, and what was found in 3d cell [1] performed in 10(-2) g environment are given. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/32739]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Hou, M,Liu, R,Li, Y,et al. 2d Granular Gas in Knudsen Regime and in Microgravity Excited by Vibration: Velocity and Position Distributions[J]. POWDERS AND GRAINS 2009,2009,1145:67. |
| APA | Hou, M,Liu, R,Li, Y,Lu, K,Garrabos, Y,&Evesque, P.(2009).2d Granular Gas in Knudsen Regime and in Microgravity Excited by Vibration: Velocity and Position Distributions.POWDERS AND GRAINS 2009,1145,67. |
| MLA | Hou, M,et al."2d Granular Gas in Knudsen Regime and in Microgravity Excited by Vibration: Velocity and Position Distributions".POWDERS AND GRAINS 2009 1145(2009):67. |
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来源：物理研究所
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