计算力学学报Issue(5)：681-684,4.DOI:10.7511/jslx201505017
基于离散元法的干湿颗粒系统仿真
A discrete element method-based simulation platform for dry and wet particulate systems
摘要
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.关键词
颗粒材料/离散元法/颗粒-流体系统/CFD-DEMKey words
granular materials/discrete element method/particle-fluid system/CFD-DEM分类
数理科学引用本文复制引用
邱流潮,张之豪,袁林娟..基于离散元法的干湿颗粒系统仿真[J].计算力学学报,2015,(5):681-684,4.基金项目
国家自然科学基金(11172321) （11172321）
国家自然科学基金青年基金(51309224)资助项目 （51309224）
