Dense granular rheology from fluctuations
Fuente:
arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866908747782160384 |
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| author | Alessio, Benjamin M. Edwards, Matthew R. Lai, Ching-Yao |
| author_facet | Alessio, Benjamin M. Edwards, Matthew R. Lai, Ching-Yao |
| contents | A unifying framework to describe dense flows of dry, deformable grains is proposed. Perturbative analysis of a granular temperature equation describing flows with contact stresses, supported by the recovery of the nonlocal granular fluidity equation, is used to derive an expression for a recently postulated critical exponent. Direct numerical simulation justifies models for the unclosed terms that provide a material-dependent estimate. Non-universality of the velocity and strain rate distributions, arising from competition between production and diffusion, rationalizes model shortcomings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_01907 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Dense granular rheology from fluctuations Alessio, Benjamin M. Edwards, Matthew R. Lai, Ching-Yao Soft Condensed Matter A unifying framework to describe dense flows of dry, deformable grains is proposed. Perturbative analysis of a granular temperature equation describing flows with contact stresses, supported by the recovery of the nonlocal granular fluidity equation, is used to derive an expression for a recently postulated critical exponent. Direct numerical simulation justifies models for the unclosed terms that provide a material-dependent estimate. Non-universality of the velocity and strain rate distributions, arising from competition between production and diffusion, rationalizes model shortcomings. |
| title | Dense granular rheology from fluctuations |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2601.01907 |