@Article{CiCP-10-4,
author = {},
title = {A Hybrid Algorithm of Event-Driven and Time-Driven Methods for Simulations of Granular Flows},
journal = {Communications in Computational Physics},
year = {2011},
volume = {10},
number = {4},
pages = {1027--1043},
abstract = {<p style="text-align: justify;">The classical discrete element approach (DEM) based on Newtonian dynamics
can be divided into two major groups, event-driven methods (EDM) and time-driven
methods (TDM). Generally speaking, TDM simulations are suited for cases with
high volume fractions where there are collisions between multiple objects. EDM simulations
are suited for cases with low volume fractions from the viewpoint of CPU
time. A method combining EDM and TDM called Hybrid Algorithm of event-driven
and time-driven methods (HAET) is presented in this paper. The HAET method employs
TDM for the areas with high volume fractions and EDM for the remaining areas
with low volume fractions. It can decrease the CPU time for simulating granular flows
with strongly non-uniform volume fractions. In addition, a modified EDM algorithm
using a constant time as the lower time step limit is presented. Finally, an example is
presented to demonstrate the hybrid algorithm.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.160610.211210a},
url = {https://global-sci.com/article/80953/a-hybrid-algorithm-of-event-driven-and-time-driven-methods-for-simulations-of-granular-flows}
}