A SPH based numerical method of landslide induced impulse wave and its application on Huangtian landslide event

Chuanqi, Shi; Yu, An; Yang, Jianhua

doi:10.1360/sspma2015-00280

Cited by 6 publications

(12 citation statements)

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“…The rigid-body model underestimates both the entry velocity and the volume sliding into the water body, which leads to a smaller run-up height on the opposite bank and little backflow. The maximum run-up height in Shi et al (2015) was approximately 21.4 m, while this study determined it to be 48 m, which is closer to the field observation (Y. Liu et al, 2015).…”

Section: Comparisons With Field Survey and Rigid Lgiw Model Resultssupporting

confidence: 79%

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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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Section: Comparisons With Field Survey and Rigid Lgiw Model Resultssupporting

confidence: 79%

“…Shi et al. (2015) simulated the Huangtian LGIW using a fluid‒rigid‐body SPH coupling model. Such fluid‒rigid‐body coupling models usually require assumptions of landslide volume, slip surface, and sliding velocity in advance.…”

Section: Simulation Of Huangtian Landslide‐generated Surge Wavesmentioning

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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“…The Wab is kernel function act as weighting function, and the Пab is artificial viscosity term representing fluid viscosity. Detailed information of SPH method and its application on LIIW problem could be found in Shi et al's papers [3,4] .…”

Section: Simulate Wave Generation With Sph Methodsmentioning

confidence: 99%

“…1. [3] had simulated the generation process of this LIIW event with SPH method. The length of the calculation area is about 14 times of water depth, and the wave hydrograph at the 2 times of water depth away from the rim of landslide is recorded.…”

Section: Huangtian Liiw Eventmentioning

confidence: 99%

Propagation of landslide induced impulse wave in channel type reservoirs

Liu

Chuanqi

et al. 2017

J. Phys.: Conf. Ser.

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Abstract. The propagation characteristics and parameter sensitivity of the landslide induced impulse wave in practical channel type reservoirs are investigated in this study. The twodimensional Saint-Venant equation and dry-wet boundary treatment method are used to simulate the wave generation and propagation processes in real reservoirs. In order to better reproduce the initial wave, a matching technique of initial wave between nearfield and far field simulation is implemented, while the nearfield wave generation processes are simulated based on full Naiver-Stokes equation. A real landslide induced impulse wave event is simulated with this technique and the propagation characteristics and parameter sensitivity are investigated. The simulation results and comparison between different cases indicate that the longitudinal shape of the channel-type reservoir is a crucial factor for propagation. Classical engineering methods which ignore this factor might produce improper estimation of the max wave height. IntroductionThe landslide induced impulse wave (LIIW) is a common but destructive disaster which happens generally in reservoirs and sea coast. In the mountainous area, many steep slopes locate at the bank of reservoir. Numerous events could trigger slope failure of these slopes, thereby massive landslide body might run into the water with high speed and thus cause destructive huge wave which will propagate to the upper and lower reaches in the reservoir. Comparing with LIIW in the basin-type reservoir, the LIIW in the channel-type reservoirs might be more danger as wave energy density of the latter is larger than the former at the same far field site.Heller and Hager (2010) [1] developed two models for both 2D LIIW and half-plane 3D LIIW. Their estimation is directly based on impact parameters and the distance between observation site and the impact site without explicit discrimination of the generation and propagation processes. In fact the generation process and the propagation process of LIIW are controlled by different physical mechanism and thus can be very different. The kernel mechanism of the wave generation is the energy transport and transform between landslide body and the water flow. Different energy magnitude and distribution lead to different wave form, while the energy dissipation in the inner generation zone is so strong that wave cannot sustains. The Naiver-Stokes equation instead of any depth averaged equation should be used to

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“…No fixed connection between particles or meshes exists, avoiding the inaccuracy from the distorted mesh when dealing with a large deformation and post failure movement of the landslides ( Huang et al, 2009 ). The SPH method has already been used for simulating waves generated by landslides by simplifying the landslide in to a rigid body ( Shi et al, 2015 ;Vacondio et al, 2013 ) or a nonNewtonian fluid model ( Ataie-Ashtiani and Shobeyri, 2008 ;Capone et al, 2010 ). Because of its Lagrangian and mesh free characteristics, the SPH method avoids the issue of the simplified treatment of materials' interface in the Euler mesh.…”

Section: Introductionmentioning

confidence: 99%

A SPH based numerical method of landslide induced impulse wave and its application on Huangtian landslide event

Cited by 6 publications

References 0 publications

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

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

Propagation of landslide induced impulse wave in channel type reservoirs

Numerical simulation of landslide-generated waves using a soil–water coupling smoothed particle hydrodynamics model

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