摘要详情
32 / 2025-07-10 17:14:00
Dynamics of particle-fluid mixture collapse with varying aspect ratios
Granular collapse, Aspect ratio, Particle-fluid interaction
全文待审
In this study, the collapse dynamics of fluid-particle mixture columns under different aspect ratio conditions are investigated using a coupled computational fluid dynamic (CFD) and discrete element method (DEM). The water and Herschel-Bulkley (HB) fluids mixed with particles are considered in the simulation, and dry granular columns with the same aspect ratio is simulated as a reference test. The results show that, compared to dry granular columns, both water and HB fluid significantly promote particle motion by reducing inter-particle contact, and this promotion increases with the aspect ratio. However, although the HB fluid induces more particles to participate in the motion due to its higher buoyancy effect, it does not lead to a longer final runout distance than that of the water-particle mixture. We also found that fluid properties have little effect on particle collapse behavior under shallow column conditions, while in tall columns, the effects of different fluids on particle collapse behavior are significant.
重要日期
-
会议日期
08月23日
2025
至08月26日
2025
-
07月10日 2025
初稿截稿日期
-
08月26日 2025
注册截止日期
主办单位
Southwest Jiaotong University, China (SWJTU)
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
承办单位
Southwest Jiaotong University, China (SWJTU)
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
联系方式
- Yufeng Wang
- wa******@swjtu.edu.cn
- +86********
