Jamming, Yielding, and Rheology during Submerged Granular Avalanche
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arXiv
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| Format: | Preprint |
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2024
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| author | Ge, Zhuan Man, Teng Hill, Kimberly M. Wang, Yujie Galindo-Torres, Sergio Andres |
| author_facet | Ge, Zhuan Man, Teng Hill, Kimberly M. Wang, Yujie Galindo-Torres, Sergio Andres |
| contents | Jamming transitions and the rheology of granular avalanches in fluids are investigated using experiments and numerical simulations. Simulations use the lattice-Boltzmann method coupled with the discrete element method, providing detailed stress and deformation data. Both simulations and experiments present a perfect match with each other in carefully conducted deposition experiments, validating the simulation method. We analyze transient rheological laws and jamming transitions using our recently introduced length-scale ratio $G$. $G$ serves as a unified metric for the pressure and shear rate capturing the dynamics of sheared fluid-granular systems. Two key transition points, $G_{Y}$ and $G_{0}$, categorize the material's state into solid-like, creeping, and fluid-like states. Yielding at $G_{Y}$ marks the transition from solid-like to creeping, while $G_{0}$ signifies the shift to the fluid-like state. The $μ-G$ relationship converges towards the equilibrium $μ_{eq}(G)$ after $G>G_0$ showing the critical point where the established rheological laws for steady states apply during transient conditions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_13730 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Jamming, Yielding, and Rheology during Submerged Granular Avalanche Ge, Zhuan Man, Teng Hill, Kimberly M. Wang, Yujie Galindo-Torres, Sergio Andres Soft Condensed Matter Geophysics Jamming transitions and the rheology of granular avalanches in fluids are investigated using experiments and numerical simulations. Simulations use the lattice-Boltzmann method coupled with the discrete element method, providing detailed stress and deformation data. Both simulations and experiments present a perfect match with each other in carefully conducted deposition experiments, validating the simulation method. We analyze transient rheological laws and jamming transitions using our recently introduced length-scale ratio $G$. $G$ serves as a unified metric for the pressure and shear rate capturing the dynamics of sheared fluid-granular systems. Two key transition points, $G_{Y}$ and $G_{0}$, categorize the material's state into solid-like, creeping, and fluid-like states. Yielding at $G_{Y}$ marks the transition from solid-like to creeping, while $G_{0}$ signifies the shift to the fluid-like state. The $μ-G$ relationship converges towards the equilibrium $μ_{eq}(G)$ after $G>G_0$ showing the critical point where the established rheological laws for steady states apply during transient conditions. |
| title | Jamming, Yielding, and Rheology during Submerged Granular Avalanche |
| topic | Soft Condensed Matter Geophysics |
| url | https://arxiv.org/abs/2408.13730 |