DEM Simulations of Settling of Spherical Particles using a Soft Contact Model and Adaptive Time Stepping

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00377296" target="_blank" >RIV/68407700:21340/24:00377296 - isvavai.cz</a>
Result on the web
<a href="http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/algoritmy/article/view/2176/1044" target="_blank" >http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/algoritmy/article/view/2176/1044</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
DEM Simulations of Settling of Spherical Particles using a Soft Contact Model and Adaptive Time Stepping
Original language description
We present a simple and flexible Discrete Element Method (DEM) model for simulating the dynamics of spherical particle systems. The aim is to utilize commonly available ODE integrators that are usually inappropriate for DEM, in particular the Runge-Kutta-Merson and Dormand-Prince solvers with adaptive time stepping. This is achieved by using a novel soft contact model with repulsive and frictional forces smoothly varying in time, which allows the time step adaptivity algorithms to work properly. The model parameters are calibrated so that a realistic random close packing can be obtained from simulations of particle settling at the bottom of a container. A reference minimal implementation in MATLAB and a complete implementation in C with OpenMP parallelization are introduced and their computational performance is assessed.
Czech name
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Czech description
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Project
<a href="/en/project/GA21-09093S" target="_blank" >GA21-09093S: Multiphase flow, transport, and structural changes related to water freezing and thawing in the subsurface</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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