Impulse waves in reservoirs generated by landslides into shallow water

Huang, Bolin; Wang, S.C.; Zhao, Y.B.

doi:10.1016/j.coastaleng.2017.03.003

Cited by 32 publications

(16 citation statements)

References 40 publications

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“…Recent research efforts into landslide-induced tsunamis have been productive. The formation, propagation, and run-up of landslide-induced impulse waves have been studied through physical experiments [7][8][9], scale model physical experiments [10], and numerical simulation [11]. Based on these studies, there are new physical model experiments to research on the run-up and formation of landslide-induced tsunamis [12,13], to be carried out in a large wave tank by varying the initial acceleration [14] in order to improve the knowledge on the involved phenomena and optimize the detection algorithm [15].…”

Section: Introductionmentioning

confidence: 99%

Model Test Research on the Propagation of Tsunamis and Their Interaction with Navigating Ships

2019

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The slope of a reservoir area is unstable and can be destroyed by natural disasters, such as strong earthquakes and rainstorms. Landslide bodies that enter the water and generate landslide surges pose serious safety risks to terminals, ships, and hydraulic structures in a reservoir area. After analyzing landslide data in a reservoir area, a series of comparative tests was carried out to investigate the propagation characteristics of landslide-induced tsunamis in channel reservoirs, and the changes in water level values at various monitoring points in the river channel after the landslides entered the water were explored. The effects of landslide width and thickness on the characteristics of landslide-induced tsunamis were analyzed. The main target was a fixed-velocity ship in landslide-swelling water. The complex nonlinear motion characteristics of the ship on the water were studied to determine the safe navigation range.

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Section: Introductionmentioning

confidence: 99%

Model Test Research on the Propagation of Tsunamis and Their Interaction with Navigating Ships

2019

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“…By means of numerical simulation, experts have simulated landslide-induced surge generated impulse waves and analyzed the deformation of the sliding mass in Newtonian and non-Newtonian fluids, Kun Guo [1], Ramshe [2], and Yeylaghi [3] applied the WC-MPS(Weakly Compressible Moving-Particle Semi-Implicit), rigorous finite volume and ISPH (Incompressible Smoothed Particle 2 of 16 Hydrodynamics) modelling separately. Through orthogonal experiments with physical models, scholars have studied the wave parameters, propagation law, attenuation coefficient, and other parameters of landslide-induced surges, Huang [4], Wang [5], and Aaron [6] focused on shallow water, complex topography, and non-hydrostatic separately. Recent research efforts into 2D experiment trails.…”

Section: Introductionmentioning

confidence: 99%

Study on the Steepness of Landslide-Induced Wave and Nonlinear Motion of Container Ships

2020

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Large-scale instability of a landslide body, sliding down a bank slope and entering water at a high speed, arouses landslide surges. Taking the water entry point as a source point, they spread rapidly to surrounding areas, increasing the danger risk of vessel passages in the water area. In this paper, adopting an orthogonal experimental design method, based on the test data, the Three Gorges Reservoir area was derived in order to calculate the height of the first wave of the bank landslide surge: to analyze the slope angle, the geological environment, the volume of the landslide surge, and the landslide surge wave steepness; to study the landslide volume effect on ship rolling and the swaying motion rule; and to explore the landslide surge in different ship rolling positions and transverse oscillation characteristics. This study can provide theoretical support for the navigation safety of ships in landslide surge waters.

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“…For a better understanding of landslide tsunami, many simplified laboratory experiments have been performed [3,4]. The experimental setup often comprises a channel (e.g., 10-20 m), slide, and slide releaser.…”

Section: Introductionmentioning

confidence: 99%

“…Studies have attempted to develop mathematical models and algorithmic innovations [14][15][16] to study and explain the phenomenon of landslide tsunamis [5]. In recent years, numerical models have based on the shallow water equation [4,17], Boussinesq-type model [18,19], and Navier-Stokes equation [16,[20][21][22] have been used. Wang et al [23] proposed a new method for considering dry-wet boundary treatment of a slider into water, coupled with the shallow water equation of the wave.…”

Section: Introductionmentioning

confidence: 99%

“…Yin et al [20] used the Flow-3D package to simulate the landslide disaster in the Three Gorges Reservoir, China. At the same location as in Reference [20], Huang et al [4] coupled the dimensionless formula and Boussinesq-type to calculate and analyze two representative examples from landslides. Generally, the mathematical models derived in previous literatures are mostly based on indoor experimental scales, focusing on the study of water wave models [14].…”

Section: Introductionmentioning

confidence: 99%

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Efficient and Accurate 3-D Numerical Modelling of Landslide Tsunami

Chen

et al. 2019

Water

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High-speed and accurate simulations of landslide-generated tsunamis are of great importance for the understanding of generation and propagation of water waves and for prediction of these natural disasters. A three-dimensional numerical model, based on Reynolds-averaged Navier–Stokes equations, is developed to simulate the landslide-generated tsunami. Available experiment data is used to validate the numerical model and to investigate the scale effect of numerical model according to the Froude similarity criterion. Based on grid convergence index (GCI) analysis, fourteen cases are arranged to study the sensitivity of numerical results to mesh resolution. Results show that numerical results are more sensitive to mesh resolution in near field than that in the propagation field. Nonuniform meshes can be used to balance the computational efficiency and accuracy. A mesh generation strategy is proposed and validated, achieving an accurate prediction and nearly 22 times reduction of computational cost. Further, this strategy of mesh generation is applied to simulate the Laxiwa Reservoir landslide tsunami. The results of this study provide an important guide for the establishment of a numerical model of the real-world problem of landslide tsunami.

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Impulse waves in reservoirs generated by landslides into shallow water

Cited by 32 publications

References 40 publications

Model Test Research on the Propagation of Tsunamis and Their Interaction with Navigating Ships

Model Test Research on the Propagation of Tsunamis and Their Interaction with Navigating Ships

Study on the Steepness of Landslide-Induced Wave and Nonlinear Motion of Container Ships

Efficient and Accurate 3-D Numerical Modelling of Landslide Tsunami

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