Investigation on collapse dynamics of ice-sand bi-frictional mixtures using material point method
文献类型：期刊论文
| 作者 | Zhang, Xiaopeng2,3; Hu, Kaiheng3; Li, Hao1,3; Liu, Shuang3; Wei, Li3 |
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2025-09-01 |
| 卷号 | 37期号:9页码:13 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0286937 |
| 通讯作者 | Hu, Kaiheng(khhu@imde.ac.cn) |
| 英文摘要 | Climate warming is associated with increased activity and significantly larger magnitudes of ice-rock avalanches in high-altitude mountainous regions. The contrasting physical properties of ice and rock contribute to the distinctive dynamics of ice-rock avalanches. In this study, the dynamics and packing characteristics of ice-rock avalanches were explored through numerical column collapse of ice-sand bi-frictional mixtures using the material point method with a concentration-dependent rheology model. The findings revealed that ice content and resistance-reducing effect of ice grains significantly affect the run-out distance. An effective initial aspect ratio (defined as the ratio of the initial height to the initial radius of the column) is scaled exponentially with ice content to derive a unified scaling relationship. Such a coefficient can be used to predict the flow regime, taking into account the influence of ice contents. This study concludes that ice-sand mixtures primarily exhibit inertial and liquid-like flow regimes as a result of low-friction interactions, thereby contributing to enhanced mobility. Finite-size analysis shows similarities with natural geophysical mass flows and can be extended to the prevention and mitigation of ice-rock avalanches. |
| WOS关键词 | MODEL ; FLOWS ; MOBILITY |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research Program ; National Natural Science Foundation of China[52409109] ; Sichuan Science and Technology Program[2024NSFSC0072] ; [2019QZKK0902] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001569355800042 |
| 出版者 | AIP Publishing |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research Program ; National Natural Science Foundation of China ; Sichuan Science and Technology Program |
| 源URL | [http://ir.imde.ac.cn/handle/131551/59155]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Hu, Kaiheng |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.PowerChina Sichuan Elect Power Engn Co LTD, Chengdu 610041, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xiaopeng,Hu, Kaiheng,Li, Hao,et al. Investigation on collapse dynamics of ice-sand bi-frictional mixtures using material point method[J]. PHYSICS OF FLUIDS,2025,37(9):13. |
| APA | Zhang, Xiaopeng,Hu, Kaiheng,Li, Hao,Liu, Shuang,&Wei, Li.(2025).Investigation on collapse dynamics of ice-sand bi-frictional mixtures using material point method.PHYSICS OF FLUIDS,37(9),13. |
| MLA | Zhang, Xiaopeng,et al."Investigation on collapse dynamics of ice-sand bi-frictional mixtures using material point method".PHYSICS OF FLUIDS 37.9(2025):13. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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