E3S Web of Conferences (Jan 2023)

Mixture theory-based SPH model for submerged landslide

  • Zhu Chengwei,
  • Peng Chong,
  • Wu Wei

DOI
https://doi.org/10.1051/e3sconf/202341502026
Journal volume & issue
Vol. 415
p. 02026

Abstract

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A novel SPH model aimed at solving the coupled water-soil problems is proposed based on the mixture theory. This method is featured with the spatially overlapped dual continua for both fluid and solid phases. The water phase is modeled as a weakly-compressible Newtonian fluid, and the soil phase is modeled using an elastoplastic constitutive model. The benchmark problem, fully submerged soil subjected to gravity, is examined to validate this SPH model. Finally, a submerged landslide is simulated to demonstrate the capability of the proposed SPH model in solving the dynamic soil–water coupling problems.