Apparent pore-pressure diffusivity in granular flows is not constant but emerges from diffusion-compaction coupling, controlled by a dimensionless ratio that makes mobility thickness-dependent.
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Coupled CFD-DEM simulations show frictional instability arises from coupled evolution of pore pressure, drainage, dilation/compaction, hydraulic connectivity, and granular fabric rather than pore pressure alone.
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Diffusion compaction coupling controls pore pressure dynamics in granular fluid flows
Apparent pore-pressure diffusivity in granular flows is not constant but emerges from diffusion-compaction coupling, controlled by a dimensionless ratio that makes mobility thickness-dependent.
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Investigating frictional instability due to pressurization in granular media: insights from coupled computational fluid dynamics discrete element method
Coupled CFD-DEM simulations show frictional instability arises from coupled evolution of pore pressure, drainage, dilation/compaction, hydraulic connectivity, and granular fabric rather than pore pressure alone.