Competition between two dynamics : interface motion and collective motion of granular particles

两种动力学之间的竞争：界面运动和颗粒的集体运动

• 批准号: 21740293
• 负责人: YAMAZAKI Yoshihiro
• 金额: $ 0.58万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740293/
• 关键词: 界面運動; 粉粒体; シミュレーション; パターン形成; 統計物理学; 非平衡・非線形物理学; 数理モデル

The aggregation process of granules driven by the motion of water-air fronts in the drying process of two-dimensional wet granular systems is experimentally studied. And a model for the collective motion of granular particles induced by an interaction with interface motion is constructed. By the experiment and the numerical simulation, it is found that the model can qualitatively reproduce labyrinthine patterns that are quite similar to those experimentally obtained in the drying process of a water-granule mixture. Moreover, the stick-slip motion of the interfaces and fractal properties are confirmed in our model.

在二维湿颗粒系统的干燥过程中，由水上前部运动驱动的颗粒的聚集过程经过实验研究。并构建了与界面运动相互作用引起的颗粒颗粒集体运动的模型。通过实验和数值模拟，发现该模型可以定性地再现迷宫模式，这些模式与水颗粒混合物的干燥过程中获得的实验非常相似。此外，在我们的模型中证实了界面和分形特性的棒状运动。