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Stresses of cohesionless granular flows in liquids |
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| Authors: | Jianxin Xia Peng Han Jinren Ni |
| Affiliation: | a School of Environmental Sciences, Central University for Nationalities, Beijing 100081, China b Department of Environmental Engineering, Peking University, Beijing 100871, China c The Key Laboratory of Water and Sediment Sciences, Ministry of Education, China |
| Abstract: | We construct constitutive relations for friction stress, slide stress and collision stress of cohesionless granular flows. We propose that the friction stress and slide stress could be neglected when τc/τe < 0.02, where τc represents the interval time experienced by a given particle between two consecutive binary collisions and τe the particle relaxation time. We applied these constitutive relations to a simulation of solid-liquid flow in an inclined chute and found the simulation results agree with experimental data. |
| Keywords: | Stress Cohesionless particle flows Dimensionless principle |
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