Development and validation of SuperDEM for non-spherical particulate systems using a superquadric particle method  

作　　者：Xi Gao Jia Yu Ricardo J.F.Portal Jean-François Dietiker Mehrdad Shahnam William A.Rogers 

机构地区：[1]National Energy Technology Laboratory,Morgantown,WV 26506,USA [2]Leidos Research Support Team,Morgantown,WV 26506,USA [3]Centro de Investigação em Modelação e Otimização de Sistemas Multifuncionais,Instituto Superior de Engenharia de Lisboa,Polytechnic Institute of Lisbon,1959-007 Lisboa,Portugal [4]Instituto de Engenharia Mecânica–Instituto Superior Técnico,Universidade de Lisboa,1049-001 Lisboa,Portugal

出　　处：《Particuology》2022年第2期74-90,共17页颗粒学报（英文版）

摘　　要：This article presents the development and validation of the Superquadric Discrete Element Method(SuperDEM)for non-spherical particle simulation using a superquadric particle method in open-source CFD suite MFiX.A superquadric particle-particle contact algorithm with accelerating and stabilizing strategy was developed.A superquadric particle-arbitrary wall contact algorithm was developed,which enables the simulation in complex geometry.The solver was validated by comparing with experimental data generated in this study or available in the literature.Tests include cylinder contacting with a wall,static packing of M&M chocolate candies in a cylindrical container,static packing of cylinders in a cylindrical container,dynamic angle of repose of cylinders in a rotating drum,and discharging of chocolate candies from a hopper.Besides,MPI parallelization of the solver was implemented and the parallel performance of the solver using MPI was assessed through large-scale simulations of 1 million,10 million,and 100 million particles on up to 6800 cores,which demonstrates that the SuperDEM solver has great potential for industrial-scale systems simulation.

关 键 词：DEM PARTICLE NON-SPHERICAL Superquadric PARALLELIZATION MFiX 

分 类 号：O413.1[理学—理论物理]