Smoothed Particle Hydrodynamics for modelling landslide–water interaction problems

Mahallem, Abderrahmane; Roudane, Mohamed; Krimi, Abdelkader; Gouri, Sid Ahmed

doi:10.1007/s10346-021-01807-1

Cited by 8 publications

(3 citation statements)

References 73 publications

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“…What is typically called 'quicksand' is often a related substance known as 'ooblek', which is a non-Newtonian liquid and has a 'slimy' behaviour [22]. We should also point out that some granular flows like landslides can be modelled both as Newtonian or non-Newtonian mass flows [23].…”

Section: Discussionmentioning

confidence: 99%

Maximal submergence in dense granular suspensions

Williams

2024

Eur. J. Phys.

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How far can a person sink downwards in quicksand? Experience would seem to suggest that there is low risk of submerging completely, but it is not easy to demonstrate this because of the complex rheology of granular suspensions. We study several mathematical models for the sinking of a vertical cylinder downwards into quicksand, finding that an approach with a buoyancy equation modified by drag force gives an unphysical answer. We instead argue that our proposed conclusion is supported by considering the dynamics of vibration-induced compactification of liquid-saturated granular suspensions. We compare quicksand with other non-Newtonian fluids, emphasising that in this case the same model does not apply and that the risk of drowning could be much more significant. We finish by suggesting some relevant experiments that can be performed in a classroom setting.

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Section: Discussionmentioning

confidence: 99%

Maximal submergence in dense granular suspensions

Williams

2024

Eur. J. Phys.

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“…Especially, for soil mass with a high permeability coefficient, such as gravel and glass beads, the permeation time is short enough to be not negligible, and mixing should be taken into consideration. Under this circumstance, the predefined bulk density is often applied to represent this mixture, which can be found in some previous LGIW studies using multiphase non‐Newton fluid model (Krimi et al., 2018; Mahallem et al., 2022). Therefore, in this work, we ignored the seepage or mixing process for low permeability coefficient material, while used predefined bulk density for high permeability coefficient material, and then only consider the interface interaction process.…”

Section: Numerical Modelmentioning

confidence: 99%

Numerical Simulation of the Large‐Scale Huangtian (China) Landslide‐Generated Impulse Waves by a GPU‐Accelerated Three‐Dimensional Soil‒Water Coupled SPH Model

Huang

et al. 2023

Water Resources Research

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Large-scale landslides near restricted water bodies, such as lakes, dammed reservoirs, and mountain rivers, may generate huge surge waves that in turn cause casualties and building damage. For example, a catastrophic rockslide, with a large volume of approximately 3 × 10 8 m 3 , slipped and fell into the Vajont reservoir in Italy in 1963. The resultant surge wave overtopped the Vajont dam causing the death of nearly two thousand people (Panizzo et al., 2005). This type of disaster chain involves complex multi-physical and multiscale problems, including landslide deformation, free-surface capture, multiphase coupling, and strong three-dimensional (3D) structural evolution.Numerous experimental studies have been conducted using indoor water channels. Generally, according to the type of sliding mass, these studies can be divided into two categories such as rigid-body models (Ataie-Ashtiani

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“…Farhadi [32] applied an ISPH formulation to solve the rheological non-Newtonian Bingham model, and to simulate underwater sediment transport and surface wave propagation. Mahallem et al [33] developed a WCSPH model and proposed a new constitutive law to describe the dynamics behaviors of landslides and water, and analyzed the strong coupling between both phases. In addition, the SPH-DEM coupled approach is now commonly applied to the simulation of landslide tsunamis.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Modeling of Tsunami Waves Triggered by Submarine Landslides Based on the Smoothed Particle Hydrodynamics Method

Dai,

Li,

Lan

2023

JMSE

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Submarine landslides are a global geohazard that can displace huge volumes of loose submarine sediment, thereby triggering enormous tsunami waves and causing a serious threat to coastal cities. To investigate the generation of submarine landslide tsunamis, a three-dimensional numerical model based on the smoothed particle hydrodynamics (SPH) method is presented in this work. The model is first validated through the simulation of two underwater landslide model tests, and is then applied to simulate the movement of the Baiyun landslide in the South China Sea (SCS). The kinetics features of the submarine landslide, including the sliding velocity and runout distance, are obtained from the SPH simulation. The tsunami waves generated by the Baiyun landslide are predicted. In addition, sensitivity analyses are conducted to investigate the impact of landslide volume and water depth on the amplitude of the tsunami waves. The results indicate that the amplitude of tsunami waves triggered by submarine landslides increases with the landslide volume and decreases with the water depth of the landslide.

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Smoothed Particle Hydrodynamics for modelling landslide–water interaction problems

Cited by 8 publications

References 73 publications

Maximal submergence in dense granular suspensions

Maximal submergence in dense granular suspensions

Numerical Simulation of the Large‐Scale Huangtian (China) Landslide‐Generated Impulse Waves by a GPU‐Accelerated Three‐Dimensional Soil‒Water Coupled SPH Model

Three-Dimensional Modeling of Tsunami Waves Triggered by Submarine Landslides Based on the Smoothed Particle Hydrodynamics Method

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