Numerical simulation of impulsive wave overtopping events resulting from landslides. by Stephen Robert Richardson

Cover of: Numerical simulation of impulsive wave overtopping events resulting from landslides. | Stephen Robert Richardson

Published .

Written in

Read online

Edition Notes

Book details

ContributionsManchester Metropolitan University. Department of Computing and Mathematics.
ID Numbers
Open LibraryOL15960945M

Download Numerical simulation of impulsive wave overtopping events resulting from landslides.

Numerical simulation of impulsive wave overtopping events resulting from landslides Author: Richardson, Stephen Robert.

ISNI: Awarding Body: Manchester Metropolitan University Current Institution: Manchester Metropolitan University. Numerical simulation of impulsive wave overtopping events resulting from landslides.

By Stephen Robert Richardson. Abstract. Available from British Library Document Supply Centre- DSC:DXN / BLDSC - British Library Document Supply CentreSIGLEGBUnited KingdoAuthor: Stephen Robert Richardson.

The water wave generation by a freely falling rigid body is examined in this paper. Landslides on the margins of dam reservoirs may generate large waves that can produce flooding over the banks or overtopping the dam crest.

In the present investigation, landslide generated waves are studied using a numerical model based on Navier-Stokes by: 1. An incompressible‐smoothed particle hydrodynamics (I‐SPH) formulation is presented to simulate impulsive waves generated by landslides.

The governing equations, Navier–Stokes equations, are solved in a Lagrangian form using a two‐step fractional by: SUMMARY An incompressible-smoothed particle hydrodynamics (I-SPH) formulation is presented to simulate im- pulsive waves generated by landslides.

The governing equations, Navier–Stokes equations, are solved in a Lagrangian form using a two-step fractional method. A coupled solid-fluid numerical model was applied to simulate the dam overtopping event of landslide generated waves in an idealized reservoir.

The model employed was based on the Reynolds-Averaged Navier-Stokes (RANS) with k–ε equations for turbulence closure.

An incompressible‐smoothed particle hydrodynamics (I‐SPH) formulation is presented to simulate impulsive waves generated by landslides. The governing equations, Navier–Stokes equations, are solved in a Lagrangian form using a two‐step fractional method.

Numerical simulation of landslide impulsive waves by incompressible smoothed particle hydrodynamics Ataie‐Ashtiani, B.; Shobeyri, G. An incompressible‐smoothed particle hydrodynamics (I‐SPH) formulation is presented to simulate impulsive waves generated by landslides.

The governing equations, Navier–Stokes equations. Abstract In this work, a two-dimensional fourth-order Boussinesq-type numerical model is applied to estimate the impact of landslide-generated waves in dam reservoirs. This numerical model has recently been extended for simulating subaerial landslides.

Numerical simulation of waves generated by landslides using a multiple-fluid Navier–Stokes model Stéphane Abadiea,⁎, Denis Morichona, Stéphan Grillib, Stéphane Glocknerc a Université de Pau et des Pays de l'Adour, Laboratoire de Sciences Appliquées au Génie Civil et au Génie Côtier JE, Allée du parc Montaury, Anglet, France b Department of Ocean Engineering, University.

In this work, impulsive wave generation and propagation generated by landslides are studied numerically for a real case. Maku dam reservoir, in the northwestern of Iran is considered as the case.

landslide and the associated waves are strong and will affect the characteristics of both (Jiang and Leblond, ; Assier-Rzadkie-wicz et al., ). Numerical simulation of landslide tsunamis has to take these factors into consideration. Tremendous effort has been devoted to simulating landslide tsunami generation in the last several decades.

Numerical simulation of wave overtopping using two dimensional breaking wave model A. soliman', M.S. ~aslan~ & D.E. ~eeve' I Division of Environmental Fluid Mechanics, School of Civil Engineering, University of Nottingham, UK. ), the overtopping of a landslide surge wave is still rarely studied.

In this paper, a coupled ISPH model will be developed for the simulation of a landslide-induced surge wave. In our study, the ISPH method following X.

Liu, Lin, and Shao () was employed for treating the large free sur-face deformation and the complex fluid-solid. A compression wave discharged from an open end of a tube causes positive impulsive noise.

Active noise cancellation which is the canceling of the noise by the addition of an inverse wave is a useful technique for reducing impulsive noise. The main objective of this study is to present the design for a negative impulsive wave generator utilizing unsteady mass influx.

The numerical model used for simulating the impulsive waves generated by a rigid landslide is based on a laboratory experiment performed by Heinrich.

In the experiment, the landslide was modeled by a rigid wedge allowed to slide freely into the water body along a 45° inclined slope. The third paper proposes a study on waves overtopping over coastal barriers.

The fourth paper details the numerical simulation of a tsunami wave that propagates over an artificial reservoir, caused by a landslide that creates a solid mass to detach from the slopes and to slide into the reservoir.

In a companion paper (Franci et al. ), a PFEM model based on the implicit formulation developed by the authors (Oñate et al. ; Franci and Zhang ; Franci and Cremonesi ), was validated for three-dimensional (3D) landslide impulse wave events and applied to the numerical simulation of the Vajont disaster with a full 3D model.

A sliding block model is developed for predicting the runout of high-speed landslides, which couple with SPH method (Smoothed Particle Hydrodynamics) to simulate impulse wave. This model adopts the limit equilibrium analysis approach to simulate the whole travel process of the soil mass from the onset of the landslide.

The submarine landslide produces highly unsteady and rapidly varied flows. Landslide-induced waves are a complex fluid–solid coupling phenomenon. A code for coupled fluid–solid simulation was developed on the basis of a coupled SPH-DEM algorithm, enabling the simulation of the whole process of disaster chains covering “Failure → Motion → Wave induction → Wave propagation→Wave-dam interaction” of landslides.

The process of wave disasters induced by. When the landslide is very close to the dam, the calculation result of this first impulsive wave plays a decisive role and may cause an overtopping process.

When the landslide stops moving and the wave enters the propagation stage, the different numerical result calculated in the NF will continue to appear in the PF (see Figure 12). Tsunamis waves generated by landslides are simulated in the present work using a 3D Smoothed Particle Hydrodynamics (SPH) numerical model.

Some improvements, able to enhance the numerical model. Landslide-generated waves (LGWs) are among natural hazards that have stimulated attentions and concerns of engineers and researchers during the past decades.

At the same period, the application of numerical modeling has been progressively increased to assess, control, and manage the risks of such hazards. This paper represents an overview of numerical studies on LGWs to explore associated. using the Wave Overtopping Simulator, as well as equations for flow depth and flow velocity under wave overtopping have been also presented by Van der Meer et al ().

In the present work the effect of wave overtopping on the crest and the inner slope of a sea dike is studied numerically. Subaerial landslides are common events, which may generate very large water waves. The numerical modelling and simulation of these events are thus of primary interest for forecasting and mitigation of tsunami disasters.

In this paper, we aim at describing these extreme events using a simplified shallow water model to derive relevant scaling laws. In this study, a numerical investigation is performed to evaluate the effects of high-pressure sinusoidal and blast wave's propagation around and inside of a human external ear.

A series of computed tomography images are used to reconstruct a realistic three-dimensional (3D) model of a human ear canal and the auricle. The airflow field is then computed by solving the governing differential. By implementing our design of the mass-force coupling scheme for slamming [6,7], we present some results for case studies related to landslide-induced tsunami modelling in a numerical wave tank, based on our highly efficient Navier-Stokes solver [4,5], named is constructed by a novel VOF finite volume approach that incorporates surface tension, coupled with a dynamic subgrid-scale.

Numerical simulation of wave climates along the Atlantic, Pacific, and Gulf Coasts of the United States. Posted on: By lanyr. Future Projections of Extreme Ocean Wave Climates and the. Dispersive shallow water wave modelling. Part IV: Numerical simulation on a globally the numerical method is applied to a couple of real-world events.

Namely, we undertake has been demonstrated by comparing the resulting wave field with hydrostatic (NSWE) computations. In [57] the authors studied the transoceanic propagation of a. construction of a new wave return wall on top of the existing sea dike. The geometry of the new wave return wall was optimised by performing wave overtopping tests using both a scale physical model and numerical model.

Results from wave overtopping tests are described in (Veale, et al., ). Coastal Engineering Conference. Dominic van der A, Joep van der Zanden, Ming Li, James Cooper, Simon Clark, Bjarke Eltard-Larsen, Stefan Carstensen, David Fuhrman, Carmelo Petrotta, Carla Faraci, Pietro Scandura, Iván Cáceres, Stuart McLelland, Guillaume Fromant, David Hurther, Gerben Ruessink, Joost Brinkkemper.

The large avalanche source resulted in a peak overtopping discharge of approximately 63 m 3 s −1 that occurred around 60 s after the start of the avalanche as well as a smaller peak of m 3 s −1 resulting from the overtopping of the reflected wave. The overtopping of the initial wave lasted about s for the large avalanche source.

The authors performed PIV tests during wave run-up at the upstream dam face. Similar experiments were conducted by Fuchs et al. (), who summarized well-documented model-overtopping tests of a w = m –high breakwater by granular landslide-generated impulse test conditions with a ratio of still water depth to breakwater height of h / w = (1) m / m, (2) m /.

The resulting wave heights were in good agreement with the experiment. The model is used for design purposes and STL files are imported directly into FLOW-3D. The size of the expected landslide zone was determined based on available geological information and surrounding landslide observations.

This book discusses the numerical simulation of water waves, which combines mathematical theories and modern techniques of numerical simulation to solve the problems associated with waves in coastal, ocean, and environmental engineering.

establishment of mathematical wave models, modern numerical simulation techniques, and applications of. Introduction [2] A subaerial landslide falling into water produces impulsive waves that travel for long distances, causing disasters far away from the generation area, producing high wave runups on shorelines and, in the case of artificial reservoirs, overtopping the dam and triggering seiching of the basin.

Subaerial landslide‐generated waves are a class of tsunamis, and they can affect. Hazards Resulting From Wave Overtopping-Full Scale Measurements Jimmy Geeraerts, Peter Troch, Julien De Rouck, Luc Van Damme and Tim Pullen pp.

- Aerial landslide generated waves (ALGW) are the result of rapid terrestrial mass wasting events (slide) that impact a body of water. These may be trivial waves generated by a few dislodged boulders, or it may be a wave exceeding m in height caused by 30 million cubic meters of rock (Miller, ).

Numerical modelling of this phenomenon is complex because four consecutive events have to be considered: the landslide itself, the impact against the still water, the wave formation and its dams due to overtopping [20], [21].

One of the intrinsic difficulties in the numerical simulation of landslides is the uncertainty on the. The downstream results of Scenario B largely correspond to the results of Scenario A, with some delay partly related to the time from the initial landslide to the overtopping of the impact wave.

Discharge at the outlet of Lake Jircacocha peaks at t = s (Fig. 10b), and the alluvial fan of Huaráz is reached after s (Fig. 10c). The peak. water landslides have been conducted by Wiegel [1], Iwasaki [2], Heinrich [3] and Watts [4].

All these studies considered the motion of solid blocks or boundaries. Iwasaki [5,6] conducted a wide variety of numerical studies for water waves generated by solid underwater landslides of various geometries, using the linear shallow water wave equations.

Numerical models in three dimensions are developed to simulate waves generated by landslides. The models were validated against theoretical and experimental results on comparative wavemaker problems.

Numerical simulation results on landslide-generated waves demonstrate a number of features of interest.A full description of the numerical model, boundary conditions, numerical scheme and applications are given in Zijlema et al. ().

Suzuki et al. () demonstrated that this model produces satisfactory results for both wave transformation and wave overtopping for shallow foreshore topography in their one-dimensional calculation.

2116 views Tuesday, November 24, 2020