Print Email Facebook Twitter Simulation of debris flow on an instrumented test slope using an updated Lagrangian continuum particle method Title Simulation of debris flow on an instrumented test slope using an updated Lagrangian continuum particle method Author Fávero Neto, Alomir H. (Stanford University) Askarinejad, A. (TU Delft Geo-engineering) Springman, Sarah M. (ETH Zürich) Borja, Ronaldo I. (Stanford University) Date 2020 Abstract We present an updated Lagrangian continuum particle method based on smoothed particle hydrodynamics (SPH) for simulating debris flow on an instrumented test slope. The site is a deforested area near the village of Ruedlingen, a community in the canton of Schaffhausen in Switzerland. Artificial rainfall experiments were conducted on the slope that led to failure of the sediment in the form of a debris flow. We develop a 3D mechanistic model for this test slope and conduct numerical simulations of the flow kinematics using an SPH formulation that captures large deformation, material nonlinearity, and the complex post-failure movement of the sediment. Two main simulations explore the impact of changes in the mechanical properties of the sediment on the ensuing kinematics of the flow. The first simulation models the sediment as a granular homogeneous material, while the second simulation models the sediment as a heterogeneous material with spatially varying cohesion. The variable cohesion is meant to represent the effects of root reinforcement from vegetation. By comparing the numerical solutions with the observed failure surfaces and final free-surface geometries of the debris deposit, as well as with the observed flow velocity, flow duration, and hot spots of strain concentration, we provide insights into the accuracy and robustness of the SPH framework for modeling debris flows. Subject Debris flowDebris slideGranular flowMeshless methodSlopeSmoothed particle hydrodynamicsUpdated Lagrangian To reference this document use: http://resolver.tudelft.nl/uuid:033a31ab-d661-4bf7-a5b5-2029715b791a DOI https://doi.org/10.1007/s11440-020-00957-1 Embargo date 2021-04-02 ISSN 1861-1125 Source Acta Geotechnica, 15 (10), 2757-2777 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2020 Alomir H. Fávero Neto, A. Askarinejad, Sarah M. Springman, Ronaldo I. Borja Files PDF Revised.pdf 5.17 MB Close viewer /islandora/object/uuid:033a31ab-d661-4bf7-a5b5-2029715b791a/datastream/OBJ/view