Coupled Eulerian-Lagrangian Debris Flow Model with Flexible Barrier

Natural hazards such as large debris flow events can have catastrophic effects on the environment and critical infrastructure, posing a significant threat to human life. Debris flows often exhibit high velocity, high-pressure discharges due their bulk volume, capacity transport considerable volumes of rocks, boulders, woody debris. Although run-out simulations are commonly performed using hydraulic modelling software, these environments seldom capable assessing interaction between fluid, transported material, protective structures. In this research, deformation numerical models calibrated input parameters from software. Due computational cost involving fluid-solid-structure simulation with flexible net barriers, an equivalent stiffness method is implemented provide comparable performance through membrane structure. The Coupled Eulerian-Lagrangian Finite Element used model impact forces rocky boulders membrane, exhibiting damage characteristics consistent ring-net results highlight simplified shown benchmark boulders.