Journal ArticleDOI
Vajont Disaster: Smoothed Particle Hydrodynamics Modeling of the Postevent 2D Experiments
Sauro Manenti,Eleonora Pierobon,Mario Gallati,Stefano Sibilla,Luigi D'Alpaos,Edoardo Gino Macchi,Sara Todeschini +6 more
TLDR
In this article, a series of two-dimensional experiments were performed at the University of Padua in 1968 considering a scale characteristic cross section of the Vajont basin near the dam: the landslide was pushed into the stored water by a moving plate over the sliding surface and the maximum wave run-up along the opposite mountain side was measured as a function of the landslide falling time.Abstract:
The Vajont disaster was caused in 1963 by a landslide of about 270 million cubic meters that fell into a hydroelectric reservoir and generated a wave about 200 m high which overtopped the dam and caused 1917 casualties. With the aim of assessing why the real wave height was underestimated, a series of two-dimensional experiments were performed at the University of Padua in 1968 considering a scale characteristic cross section of the Vajont basin near the dam: the landslide was pushed into the stored water by a moving plate over the sliding surface and the maximum wave run-up along the opposite mountain side was measured as a function of the landslide falling time. Some of these results have been compared to smoothed particle hydrodynamics numerical simulations in which both water and noncohesive sediment are simulated as weakly compressible fluid; water is treated as Newtonian fluid while a proper rheological model is adopted for the landslide to mimic its non-Newtonian behavior. The computed fall...read more
Citations
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Journal ArticleDOI
A hybrid DEM-SPH model for deformable landslide and its generated surge waves
Hai Tan,Shenghong Chen +1 more
TL;DR: In this article, a hybrid DEM-SPH model is presented to simulate landslide and to reproduce its generated surge waves, which consists of discrete element method for solid phase and smoothed particle hydrodynamics (SPH) for fluid phase as well as drag force and buoyancy for solid-fluid interaction.
Journal ArticleDOI
On the filtering of acoustic components in weakly-compressible SPH simulations
TL;DR: In this paper, a post-processing analysis of the time pressure signals when a weakly-compressible Smoothed Particle Hydrodynamics (SPH) model is used to simulate free-surface flows is presented.
Journal ArticleDOI
Numerical simulation of landslide-generated waves using a soil–water coupling smoothed particle hydrodynamics model
TL;DR: In this article, the authors simulate the generation of a landslide-induced impulse wave with a newly developed soil-water coupling model in the smoothed particle hydrodynamics (SPH) framework.
Journal ArticleDOI
A dynamic δ-SPH model: How to get rid of diffusive parameter tuning
TL;DR: In this paper, the effects on the dissipation process when changing δ and α are analyzed, and it is found that the two components are strictly related and, surprisingly, different sets of coefficients lead in most of the cases to similar amount of total dissipated energy.
Journal ArticleDOI
Multi-phase SPH model for simulation of erosion and scouring by means of the shields and Drucker–Prager criteria.
TL;DR: In this paper, a two-phase numerical model using smoothed particle hydrodynamics (SPH) is developed to model the scouring of liquid-sediments flows with large deformation.
References
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Journal ArticleDOI
Smoothed particle hydrodynamics: Theory and application to non-spherical stars
R. A. Gingold,Joseph J Monaghan +1 more
Journal ArticleDOI
A numerical approach to the testing of the fission hypothesis.
TL;DR: A finite-size particle scheme for the numerical solution of two-and three-dimensional gas dynamical problems of astronomical interest is described and tested in this article, which is then applied to the fission problem for optically thick protostars.
Journal ArticleDOI
Simulating Free Surface Flows with SPH
TL;DR: In this paper, the SPH (smoothed particle hydrodynamics) method is extended to deal with free surface incompressible flows, and examples are given of its application to a breaking dam, a bore, the simulation of a wave maker, and the propagation of waves towards a beach.
Journal ArticleDOI
Modeling Low Reynolds Number Incompressible Flows Using SPH
TL;DR: In this article, the smoothed particle hydrodynamics (SPH) method is extended to model incompressible flows of low Reynolds number, and the results show that the SPH results exhibit small pressure fluctuations near curved boundaries.
Journal ArticleDOI
A constitutive law for dense granular flows
TL;DR: The results support the idea that a simple visco-plastic approach can quantitatively capture granular flow properties, and could serve as a basic tool for modelling more complex flows in geophysical or industrial applications.
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