Application of a weakly compressible smoothed particle hydrodynamics multi-phase model to non-cohesive embankment breaching due to flow overtopping

Memarzadeh, Rasoul; Barani, Gholam‐Abbas; Ghaeini-Hessaroeyeh, Mahnaz

doi:10.1007/s11709-017-0432-8

Cited by 5 publications

(4 citation statements)

References 36 publications

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“…In addition, other computational fluid dynamics methods are also used to investigate overtopping failure of landslide dams like the smoothed particle hydrodynamics (SPH) approach (Memarzadeh et al, 2018) or discontinuous deformation analysis (DDA) coupled with SPH method (Wang M. et al, 2017). Two-phase formulations are used in the SPH numerical algorithms to examine the free surface and bed evolution profiles, in which the entrained sediments are treated as a different fluid component (Ran et al, 2015).…”

Section: Coupled Shallow Water Hydrodynamic Modelsmentioning

confidence: 99%

Recent Advances in Stability and Failure Mechanisms of Landslide Dams

et al. 2021

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Numerous landslide dams have been induced in recent years as a result of frequent earthquakes and extreme climate hazards. Landslide dams present serious threats to lives and properties downstream due to potentially breaching floods from the impounded lakes. To investigate the factors influencing the stability of landslide dams, a large database has been established based on an in-depth investigation of 1,737 landslide dam cases. The effects of triggers, dam materials, and geomorphic characteristics of landslide dams on dam stability are comprehensively analyzed. Various evaluation indexes of landslide dam stability are assessed based on this database, and stability evaluation can be further improved by considering the dam materials. Stability analyses of aftershocks, surges, and artificial engineering measures on landslide dams are summarized. Overtopping and seepage failures are the most common failure modes of landslide dams. The failure processes and mechanisms of landslide dams caused by overtopping and seepage are reviewed from the perspective of model experiments and numerical analyses. Finally, the research gaps are highlighted, and pathways to achieve a more complete understanding of landslide dam stability are suggested. This comprehensive review of the recent advances in stability and failure mechanisms of landslide dams can serve as a key reference for stability prediction and emergency risk mitigation.

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Section: Coupled Shallow Water Hydrodynamic Modelsmentioning

confidence: 99%

Recent Advances in Stability and Failure Mechanisms of Landslide Dams

et al. 2021

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“…Where j m and j  are the mass and density of particle j , W is the smoothing function, r is position vector, h is smoothing distance. Discretization of pressure and viscosity terms in Navier-Stokes (NS) equations by the SPH method is as follows (Memarzadeh et al 2018):…”

Section: Isph Formulation and Solving Algorithmmentioning

confidence: 99%

“…Xu et al (2013) present an improved SPH method and its interesting extension to 3D non-Newtonian free surface flows, which are modeled by the Cross model. Memarzadeh et al (2018) applied a mesh free Lagrangian twodimensional non-cohesive sediment transport model based on the SPH method to a two-phase flow over an initially trapezoidal-shaped sediment embankment. Furthermore, the SPH method has been successfully used to simulate the interaction of fluid flow and rigid bodies.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study of Abrupt Wave Interaction with Vertical and Inclined Rectangular Obstacles

Memarzadeh

Sheybanifard

Zounemat‐Kermani

2021

JAFM

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The aim of the present paper is the study of interaction of the abrupt wave with vertical and inclined rectangular obstacles. For this purpose, in the first step, two experiments have been done. The tests were performed with smooth rectangular cross-section channels, and related data were extracted using digital image processing. Flow behavior was recorded with one adjacent CCD camera through the glass walls of the entire downstream channel. In the second step, the numerical study has been done by a mesh-free particle Lagrangian method (Incompressible Smoothed Particle Hydrodynamics, ISPH) and a mesh-based Eulerian method (Finite Volume Method with Volume of Fluid surface tracking approach, FV-VOF). The capabilities of the numerical methods in simulation of the sudden variations free surface flows have been assessed. A comparison between the computed results and the experimental data shows that both numerical models simulate the mentioned flows with reasonable accuracy.

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“…As one of the most famous particle-based method, SPH was originally proposed in the 1970s for the modeling of astrophysical problems [Lucy (1977); Gingold and Monaghan (1977)]. The SPH method has attracted attentions of the researchers from a variety of fields since the beginning of the 1990s, and has been successfully applied to solve problems such as the impact in solids [Allahdadi, Carney, Hipp et al (1993); Randles and Libersky (1996); Rabczuk and Eibl (2003); Hedayati and Vahedi (2017)], dynamic fracture and fragmentation [Rabczuk, Eibl and Stempniewski (2004)], multiple-phase flows [Cleary (1998); Hu and Adams (2006) ;Memarzadeh, Barani and Ghaeini-Hessaroeyeh (2018)], free-surface flows in fluid dynamics [Monaghan (1994)], Magnetohydrodynamics [Monaghan (1988); Price and Monaghan (2004)]. For a more complete review of SPH, we refer to [Liu and Liu (2010); Ye, Pan, Huang et al (2019)].…”

Section: Introductionmentioning

confidence: 99%

A Dual-Support Smoothed Particle Hydrodynamics for Weakly Compressible Fluid Inspired By the Dual-Horizon Peridynamics

Ren¹,

Zhuang²,

Rabczuk³

2019

Computer Modeling in Engineering &Amp; Sciences

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A dual-support smoothed particle hydrodynamics (DS-SPH) that allows variable smoothing lengths while satisfying the conservations of linear momentum, angular momentum and energy is developed. The present DS-SPH is inspired by the dual-support, a concept introduced from dual-horizon peridynamics from the authors and applied here to SPH so that the unbalanced interactions between the particles with different smoothing lengths can be correctly considered and computed. Conventionally, the SPH formulation employs either the influence domain or the support domain. The concept of dual-support identifies that the influence domain and the support domain involves the duality and should be simultaneously in the SPH formulation when variable smoothing lengths are used. The DS-SPH formulation can be implemented into conventional SPH codes with minimal changes and also without compromising the computational efficiency. A number of numerical examples involving weakly compressible. fluid are presented to demonstrate the capability of the method.

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Application of a weakly compressible smoothed particle hydrodynamics multi-phase model to non-cohesive embankment breaching due to flow overtopping

Cited by 5 publications

References 36 publications

Recent Advances in Stability and Failure Mechanisms of Landslide Dams

Recent Advances in Stability and Failure Mechanisms of Landslide Dams

Numerical and Experimental Study of Abrupt Wave Interaction with Vertical and Inclined Rectangular Obstacles

A Dual-Support Smoothed Particle Hydrodynamics for Weakly Compressible Fluid Inspired By the Dual-Horizon Peridynamics

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