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- W4200598329 abstract "In this paper, a coupled DLM-DEM numerical approach is proposed to enable particle-particle and particle-wall interactions within the open-source IBAMR (Immersed Boundary Adaptive Mesh Refinement) framework. A soft-sphere DEM collision model is adopted and compared against the particle-particle repulsion force model suggested in the literature. It is demonstrated that the former collision model remains effective at both low and high particle-fluid density ratios, whereas the latter model can lead to unphysical particle-particle interaction dynamics at high density ratios. Moreover, the soft-sphere DEM collision model is based on physical material properties, which is in contrast to an artificial parameter-based repulsion force model. The proposed DLM-DEM approach is validated by simulating the particle-particle collision in drafting, kissing, and tumbling (DKT) phenomenon, and particle-wall collision at various Stokes numbers. Using this approach, we also simulate the interactions between a single colliding particle and a particle cluster and analyze the particles' motion and distribution. Additionally, sedimentation of polygon-shaped particles is also considered to demonstrate the versatility of the proposed approach." @default.
- W4200598329 created "2021-12-31" @default.
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- W4200598329 date "2022-01-01" @default.
- W4200598329 modified "2023-09-25" @default.
- W4200598329 title "A coupled distributed Lagrange multiplier (DLM) and discrete element method (DEM) approach to simulate particulate flow with collisions" @default.
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- W4200598329 doi "https://doi.org/10.1016/j.powtec.2021.117091" @default.
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