Velocity Distribution of Vibration-driven Granular Gas in Knudsen Regime in Microgravity
文献类型：期刊论文
| 作者 | Hou, M ; Liu, R ; Zhai, G ; Sun, Z ; Lu, K ; Garrabos, Y ; Evesque, P |
| 刊名 | MICROGRAVITY SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2008 |
| 卷号 | 20期号:2页码:73 |
| 关键词 | LOW GRAVITY STATISTICS |
| ISSN号 | 0938-0108 |
| 通讯作者 | Hou, M (reprint author), 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 micro-gravity 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 followed for 2 hours, and is reconstructed from video data by particle tracking. From statistical analysis, we find that (i) loss due to wall friction is small, (ii) trajectory looks ergodic in space, and (iii) distribution rho(v) of speed follows an exponential distribution, i.e., rho(upsilon) approximate to exp [-v/(v(x0,y0))], with v(x0,y0) 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 (Falcon et al., Europhys Lett 74: 830, 2006) performed in environment of about +/- 5 x 10(-2) g are given. |
| 收录类别 | SCI |
| 资助信息 | CNSF; CAS; CNSA [10720101074, KACX2-SW-02-06]; CNES; ESA |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46515]  |
| 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,Zhai, G,et al. Velocity Distribution of Vibration-driven Granular Gas in Knudsen Regime in Microgravity[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2008,20(2):73. |
| APA | Hou, M.,Liu, R.,Zhai, G.,Sun, Z.,Lu, K.,...&Evesque, P.(2008).Velocity Distribution of Vibration-driven Granular Gas in Knudsen Regime in Microgravity.MICROGRAVITY SCIENCE AND TECHNOLOGY,20(2),73. |
| MLA | Hou, M,et al."Velocity Distribution of Vibration-driven Granular Gas in Knudsen Regime in Microgravity".MICROGRAVITY SCIENCE AND TECHNOLOGY 20.2(2008):73. |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。