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| A discrete element method-based simulation platform for dry and wet particulate systems |
| Received:August 15, 2014 Revised:May 11, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201505017 |
| KeyWord:granular materials discrete element method particle-fluid system CFD-DEM |
| Author | Institution |
| 邱流潮 |
中国农业大学 水利与土木工程学院, 北京 |
| 张之豪 |
中国农业大学 水利与土木工程学院, 北京 |
| 袁林娟 |
中国农业大学 水利与土木工程学院, 北京 |
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| Abstract: |
| A discrete element method-based simulation platform for dry and wet particulate systems,DEMSIM,is introduced in this paper.In the case of dry particulate systems,DEMSIM has the ability to model the elastic and plastic contact of granular systems in two and three dimensions.For particulate system with few liquid,a liquid bridge model is applied in this simulation platform.In addition,a numerical method coupling discrete element method (DEM) with computational fluid dynamics (CFD) is developed to simulate particle-liquid flow in DEMSIM.The liquid motion was considered as a weakly compressible flow solved using CFD solvers while the discrete particle motion is solved using DEM in which the particle-particle interaction are based on theoretical contact mechanics thereby enabling particles to be directly specified using realistic material properties such as friction and elasticity.Several numerical examples are presented to verify the simulation platform by comparing the numerical results with theoretic solution and experimental data in the literature.The results demonstrate the ability to simulate the dynamics of the dry and wet particulate systems. |