| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
|
|
|
|
Phase Transition and Critical Phenomenon Occurring in Granular Matter |
| Yao-Dong Feng1,2, Tao Su2, Qing-Fan Shi1, Gang Sun2,3** |
1Department of Physics, Beijing Institute of Technology, Beijing 100081
2Beijing Key Laboratory for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190
3School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190
|
|
| Cite this article: |
|
Yao-Dong Feng, Tao Su, Qing-Fan Shi et al 2019 Chin. Phys. Lett. 36 094501 |
|
|
|
|
Abstract We investigate the granular flow states in a channel with bottleneck by molecular dynamics simulations. Our study is restricted only on a selected key area rather than on the whole system to focus on the flow properties of a single granular state. A random force field is introduced to control the granular temperature. It is also pointed out that the flow rate in the granular flow can be correlated with the pressure, which leads us to carry out a comprehensive study similar to the classical study for general liquid-gas phase transition. Our results show that the dilute flow state and the dense flow state of the granules are similar to the gas state and the liquid state of general substances, respectively, and the properties of phase transition and critical phenomenon are also similar to those occurring in general substances.
|
|
|
Received: 09 May 2019
Published: 23 August 2019
|
|
| PACS: |
45.70.Mg
|
(Granular flow: mixing, segregation and stratification)
|
| |
87.15.Ya
|
(Fluctuations)
|
| |
75.40.Mg
|
(Numerical simulation studies)
|
|
|
| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 10875166 and 11274355. |
|
|
|
| [1] | Landau L D and Lifschitz E M 1980 Course of Theoretical Physics: Statistical Physics vol 5 part 1 (Oxford: Pergamon Press Ltd) | | [2] | Sethna J P 2017 Statistical Mechanics: Entropy, Order Parameters, and Complexity (Oxford: Clarendon Press) | | [3] | Duran J 1996 Sand, Power, and Grains: An Introduction to the Physics of Granular Materials (New York: Springer) | | [4] | Jaeger H M, Nagel S R and Behringer R P 1996 Rev. Mod. Phys. 68 1259 | | [5] | Kadanoff L P 1999 Rev. Mod. Phys. 71 435 | | [6] | Campbell C S 1990 Annu. Rev. Fluid Mech. 22 57 | | [7] | Goldhirsch I 1999 Chaos 9 659 | | [8] | Huang D C, Sun G, Hou M Y and Lu K Q 2006 Acta Phys. Sin. 55 4754 (in Chinese) | | [9] | Huang D C, Sun G and Lu K Q 2006 Phys. Rev. E 74 061306 | | [10] | Hou M, Chen W, Zhang T, Lu K and Chan C K 2003 Phys. Rev. Lett. 91 204301 | | [11] | Goldhirsch I 2008 Powder Technol. 182 130 | | [12] | Campbell C S 2006 Powder Technol. 162 208 | | [13] | Su T, Feng Y D, Zhao H W, Huang D C and Sun G 2013 Acta Phys. Sin. 62 164502 (in Chinese) | | [14] | The International Association for the Properties of Water and Steam 2001 Guideline on the Use of Fundamental Physical Constants and Basic Constants of Water p 5 |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
