Generalized Particle-Continuum Coupling Methods for Multi-Physical Processes in Granular Materials

Activity: Talk or presentationInvited talk


Modeling multi-physical processes in granular materials by simulating the grains individually is computationally demanding. Nevertheless, granular material behavior is unique in the varying length and/or time scales. This has largely motivated the multi-scale approach where models at various scales are combined. This work presents a novel multi-scale thermal modeling to couple particulate systems with solid media using the discrete element method (DEM) and the finite element method (FEM). Based on a micro-macro transition technique called “coarse-graining” (CG), we derive coupling terms in more generalized forms than those reported in the literature. For surface coupling, CG allows for the distribution of the coupling forces or fluxes beyond the finite elements that the particles are locally coupled with. For volume coupling, CG is applied to enrich the homogenization/localization operations on particle-scale quantities with a spatial smoothing kernel that can be problem-dependent.
Period9 Oct 2023
Event title8th International Conference on Particle-Based Methods, PARTICLES 2023
Event typeConference
Conference number8
LocationMilan, ItalyShow on map
Degree of RecognitionInternational