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| Flow behaviors and dynamic similarity of wet granular collapse in the pendular state |
| Received:February 27, 2022 Revised:April 12, 2022 |
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| DOI：10.7511/jslxCMGM202210 |
| KeyWord:wet granular material pendular state capillary force collapse regime dynamic similarity |
| Author | Institution |
| 吴怡淞 |
兰州大学 土木工程与力学学院 力学与工程科学系, 西部灾害与环境力学教育部重点实验室, 兰州 |
| 王等明 |
兰州大学 土木工程与力学学院 力学与工程科学系, 西部灾害与环境力学教育部重点实验室, 兰州 |
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| Abstract: |
| The collapse of a wet granular column driven by gravity in the pendular state is systematically investigated using a discrete element model of wet particles,with effects of model parameters such as the particle size,liquid surface tension coefficient,and liquid content on the collapse regime and dynamics being primarily considered.It is discovered that particle size and liquid surface tension coefficient are both two relevant parameters in determining the collapse regimes by varying the capillary force between wet particles,whereas liquid content only has a quantitative effect on the final deposit morphology after collapse.On this basis,we have further discussed the dependence of flow behaviors on model parameters and find that the dimensionless Bond number is an essential factor in determining the collapse regimes of wet granular columns in the pendular state. |