Engineering Mechanics

Proceedings Vol. 31 (2025)

ENGINEERING MECHANICS 2025

Copyright © 2025 Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prague

 

Studeník O., Kotouč Šourek M., Kočí P., Isoz M.
pages 201 - 204, full text

To enable high-fidelity and physically relevant simulations of non-spherical suspensions, we aim to design a solver coupling computational fluid dynamics (CFD) with the discrete element method (DEM). The CFD part of the solver is based on the widely used OpenFOAM library. However, to design a robust and computationally efficient DEM for non-spherical particles is still an open problem, as the contact solution is, in this case, nontrivial. In this contribution, we propose an updated formulation of a DEM contact model for non-spherical particles that is (i) based on the concept of overlap volume, (ii) robust, and (iii) for the case of spheres, consistent with the standard Hertz-Mindlin model. The presented model is successfully verified against LIGGGHTS on a DEM benchmark test.

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All papers were reviewed by members of the scientific committee.