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Investigating frictional instability due to pressurization in granular media: insights from coupled computational fluid dynamics discrete element method
arXiv:2606.06257v1 Announce Type: cross Abstract: Fluid pressurization can reactivate subcritically stressed granular layers in faults, slopes, and injection-perturbed reservoirs, but grain-scale feedbacks among pressure diffusion, drainage, and contact-network degradation remain unresolved. Here, 3D coupled CFD-DEM simulations investigate pore-pressure-induced reactivation of confined, fluid-saturated granular shear layers under imposed shear stress. Strain-controlled tests define the...