Performance and limits of a geotechnical centrifuge: DEM-LBM simulations of saturated granular column collapse

Granular Matter, Journal Year: 2024, Volume and Issue: 26(2)

Published: March 1, 2024

Abstract This study investigates the dynamics of granular flows in geotechnical centrifuge models, focusing on effects centrifugal and Coriolis accelerations. While conventional laboratory-scale investigations often rely Froude scaling, modelling offers a unique advantage incorporating stress-dependent processes that fundamentally shape flow rheology dynamics. Using Discrete Element Method (DEM) Lattice-Boltzmann (LBM), we simulate collapse just-saturated column within rotating reference frame. The model’s accuracy is validated against expected trends physical experiments, demonstrating its strong performance replicating idealised behaviour. Acceleration both macro- grain-scale are examined through phase front coordination number analysis, providing insight how accelerations influence structure mobility. work enhances our understanding models by introducing an interstitial pore fluid considering multiple factors behaviour over wide parameter space. Graphical abstract

Language: Английский

Application of innovative multi-directional laminar shear box to evaluate seismic soil – Pile foundation – Nuclear power plant interaction

Soil Dynamics and Earthquake Engineering, Journal Year: 2024, Volume and Issue: 190, P. 109152 - 109152

Published: Dec. 7, 2024

Language: Английский