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サイトウ クニヤス
Kuniyasu Saitoh
齊藤 国靖 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2017/07 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Anisotropic decay of the energy spectrum in two-dimensional dense granular flows |
| 執筆形態 | その他 |
| 掲載誌名 | Physical Review E |
| 出版社・発行元 | AMER PHYSICAL SOC |
| 巻・号・頁 | 96(1) |
| 著者・共著者 | Saitoh, K.,Mizuno, H. |
| 概要 | We study anisotropic collective motions of two-dimensional granular particles under simple shear deformations. Employing molecular-dynamics simulations of large system sizes, we find that anisotropic fluidized bands develop in the system yielding under quasistatic deformations, where the spectrum of nonaffine velocities, which is associated with the energy spectrum for turbulent flows, exhibits a quadrupole structure. To explain theoretically the anisotropic spectrum, we derive hydrodynamic modes from a continuum model of dense granular materials, where we find that fluidized bands are caused by long-lived hydrodynamic fluctuations characterized by compressibility. |
| DOI | 10.1103/PhysRevE.96.012903 |
| ISSN | 2470-0045/2470-0053 |
| PermalinkURL | http://www.scopus.com/inward/record.url?eid=2-s2.0-85026459973&partnerID=MN8TOARS |
| researchmap用URL | http://orcid.org/0000-0002-3511-2710 |