Computationally efficient DEM simulation of a basket-type centrifugal filter using a novel switchable contact model
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2025-02-28
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Mcode
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Language
en
Pages
13
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Powder Technology, Volume 452
Abstract
The discrete element method (DEM) offers enormous potential to gain a better understanding of cake formation in centrifugal filtration. However, the necessity to represent the highly porous filter mesh in these simulations incurs a significant computational cost. We propose replacing the porous mesh boundary that is conventionally used with a ‘switchable contact model’ (SCM) in which the contact model between a particle and a continuous cylindrical shell is selectively enabled or disabled depending on the particle's location at the periphery of the centrifuge basket. SCM is disabled whenever a particle is deemed to be in contact with a pore location, thus allowing its egress from the basket. There was a ∼ 36 % reduction in computation time compared to the conventional mesh-based representation of a bounding filter mesh, with similar particle retention and bulk cake formation behavior. This concept could in principle be applied to model any repetitive porous structure in DEM.Description
Publisher Copyright: © 2024 The Author(s)
Keywords
Boundary representation, Centrifugal filtration, Contact detection, Discrete element method, High-performance computing, Porous media
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Citation
Serper, D, Hanley, K J & Oinas, P 2025, ' Computationally efficient DEM simulation of a basket-type centrifugal filter using a novel switchable contact model ', Powder Technology, vol. 452, 120467 . https://doi.org/10.1016/j.powtec.2024.120467