A Lagrangian finite element approach for the simulation of water-waves induced by landslides

Cremonesi, Massimiliano; Frangi, Attilio; Perego, U.

doi:10.1016/j.compstruc.2010.12.005

Cited by 107 publications

(87 citation statements)

References 39 publications

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“…For a saturated submerged landslide, like the experiment of submarine landslide mentioned above, a good agreement can be seen between the simulation results of non-Newtonian fluid models and experiments data ( Ataie-Ashtiani and Shobeyri, 2008 ;Rzadkiewicz et al, 1997 ;Capone et al, 2010 ;Mariotti and Heinrich, 1999 ). But for a fast subaerial landslide, like the experiment of Fritz et al, the landslide may behave too softly with the non-Newtonian fluid models compared with the real situations ( Quecedo et al, 2004 ;Cremonesi et al, 2011 ). Conversely, the elasto-plastic soil model used in our model can successfully simulate the structure of the landslide body during the entire process of the soil rushing into the water ( Fig.…”

Section: Comparison With a Non-newtonian Fluid Modelsupporting

confidence: 53%

“…recently. Using rheological theory, a non-Newtonian fluid model was used to describe the deformation and movement of landslides by Quecedo et al (2004) , Cremonesi et al (2011) , Rzadkiewicz et al (1997) , Capone et al (2010) , Ataie-Ashtiani and Shobeyri (2008) , Mariotti and Heinrich (1999) ( Table 2 ), and Manenti et al (2015) . Simple governing equations and fluid-fluid interaction for the coupling process in this model will reduce the simulated difficulties.…”

Section: Introductionmentioning

confidence: 99%

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

Shi

et al. 2016

Advances in Water Resources

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Section: Comparison With a Non-newtonian Fluid Modelsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

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

Shi

et al. 2016

Advances in Water Resources

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“…The exponential term in (5) has only a regularization purpose [2,9], and does not have a constitutive interpretation. The constitutive law expressed by equation (5) can be interpreted as a viscoplastic behavior with a Drucker-Prager type yield criterion.…”

Section: Constitutive Lawmentioning

confidence: 99%

“…Moreover, an "alpha shape" technique is introduced to identify the free-surfaces and the interacting surfaces between water and landslide. Details on the numerical procedure can be found in [2,3,4,5].…”

Section: Discretization and Numerical Techniquementioning

confidence: 99%

“…Recent developments in the simulation techniques for coupled problems have led to efficient analysis procedures allowing for the accurate reproduction of landslide-reservoir interactions (see for example [1,2]). The numerical analysis of these events requires capabilities for tracking interfaces and free surfaces undergoing large displacements, and accounting for the mixing of different constituents, for complex constitutive behaviors and for multi-physics processes.…”

Section: Introductionmentioning

confidence: 99%

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A Lagrangian Pfem Approach to the Numerical Simulation of 3d Large Scale Landslides Impinging in Water Reservoirs

Cremonesi¹,

Ferri²,

Perego³

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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Abstract. Landslides are exceptional natural hazards that can generate extensive damage to structures and infrastructures causing a large number of casualties. A particularly critical condition occurs when the landslide impinges in water reservoirs generating high waves. This work proposes a numerical tool to simulate the macroscopic behavior of a propagating landslide. The Particle Finite Element Method (PFEM) is here used and adapted to the specific case of landslide runout. The Lagrangian Navier-Stokes equations of incompressible fluids are used to describe the macroscopic landslide behavior. A rigid-visco-plastic law with a pressure dependent threshold, typical of a non-Newtonian, Bingham-like fluid, is used to characterize the constitutive behavior of the flowing material. Special attention is devoted to the definition of ad-hoc pressure-dependent slip boundary conditions at the interface between the flowing mass and the basal surface to better represent the real landslide-slope interaction. The proposed approach has been validated against numerical benchmarks and small scale experimental tests, showing a good agreement with the physical measurements. Real case scenarios have also been considered. 3D geometries of critical sites, where landslides have occurred, have been reconstructed allowing for the simulation of large scale real landslide runouts. Results are compared with post-event images and measurements, showing the accuracy and the capability of the method. 608

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Impulse waves generated by snow avalanches: Momentum and energy transfer to a water body

et al. 2016

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When a snow avalanche enters a body of water, it creates an impulse wave whose effects may be catastrophic. Assessing the risk posed by such events requires estimates of the wave's features. Empirical equations have been developed for this purpose in the context of landslides and rock avalanches. Despite the density difference between snow and rock, these equations are also used in avalanche protection engineering. We developed a theoretical model which describes the momentum transfers between the particle and water phases of such events. Scaling analysis showed that these momentum transfers were controlled by a number of dimensionless parameters. Approximate solutions could be worked out by aggregating the dimensionless numbers into a single dimensionless group, which then made it possible to reduce the system's degree of freedom. We carried out experiments that mimicked a snow avalanche striking a reservoir. A lightweight granular material was used as a substitute for snow. The setup was devised so as to satisfy the Froude similarity criterion between the real‐world and laboratory scenarios. Our experiments in a water channel showed that the numerical solutions underestimated wave amplitude by a factor of 2 on average. We also compared our experimental data with those obtained by Heller and Hager (2010), who used the same relative particle density as in our runs, but at higher slide Froude numbers.

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A Lagrangian finite element approach for the simulation of water-waves induced by landslides

Cited by 107 publications

References 39 publications

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

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

A Lagrangian Pfem Approach to the Numerical Simulation of 3d Large Scale Landslides Impinging in Water Reservoirs

Impulse waves generated by snow avalanches: Momentum and energy transfer to a water body

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