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- W3136650506 abstract "The Level Set-Discrete Element Method (LS-DEM) extends DEM towards arbitrary grain shapes by storing distance-to-surface values on a grid for each Discrete Element (DE), together with considering boundary nodes located onto the DE’s surface. Both these ingredients are shown to affect the precision and computational costs of LS-DEM, considering various numerical simulations at the contact- and packing-scales for ideal spherical and superellipsoid shapes. In the case of a triaxial compression for spherical particles, approaching with a reasonable precision the reference result obtained in classical DEM requires the grid spacing to be smaller than one tenth of particle size, as well as using a couple thousands of boundary nodes. Computational costs in terms of memory (RAM) or evaluation time then increase in LS-DEM by two or three orders of magnitude. Simple OpenMP parallel simulations nevertheless significantly reduce the increase in time cost, possibly dividing the latter by 20." @default.
- W3136650506 created "2021-03-29" @default.
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- W3136650506 date "2021-06-01" @default.
- W3136650506 modified "2023-10-12" @default.
- W3136650506 title "Precision and computational costs of Level Set-Discrete Element Method (LS-DEM) with respect to DEM" @default.
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- W3136650506 doi "https://doi.org/10.1016/j.compgeo.2021.104033" @default.
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