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- W4200301415 abstract "Abstract In this letter, we focus on the size effect of granular column collapses, which are potentially connected to the dynamics of complex geophysical flows, even if the link between microscopic structures of granular assemblies and their macroscopic behaviors is still not well understood. Using the spheropolyhedral discrete element method (DEM), we show that the column radius/grain size ratio has a strong influence on the collapse behavior. A finite‐size analysis, which is inspired by a phase transition around an inflection point, is performed to obtain a general scaling equation with critical exponents for runout distances. We further link the size effect with the strong force network and formalize a correlation length scale that exponentially scales with the effective aspect ratio. Such a scaling solution shows similarities with the percolation problem of two‐dimensional random networks and can be extended to other similar natural and engineering systems." @default.
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- W4200301415 date "2021-12-16" @default.
- W4200301415 modified "2023-10-05" @default.
- W4200301415 title "Finite‐Size Analysis of the Collapse of Dry Granular Columns" @default.
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- W4200301415 doi "https://doi.org/10.1029/2021gl096054" @default.
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