Numerical modelling of the fluid–seabed-structure interactions considering the impact of principal stress axes rotations

Zhao, Hui; Zhu, Jianfeng; Zheng, Jinhai; Zhang, J.-S.

doi:10.1016/j.soildyn.2020.106242

Cited by 39 publications

(12 citation statements)

References 53 publications

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“…Most of the papers study the seabed response that is composed of non-cohesive sediments that behave primarily as elastic materials that, in contact with water, have a pore-elastic (dense seabed) [91,92] or pore-elastoplastic (loose seabed) behaviour [86,[93][94][95].…”

Section: Rheological Modelsmentioning

confidence: 99%

“…Their numerical results showed that the breakwater permeability, density, and slope of the seabed significantly affect the potential liquefaction, which leads to scour effects (Figure 10). Ye et al [93], Zhao et al [95] used the same approach to study the wave-structure-seabed interactions. They modelled the relation between stresses and deformation of the seabed with a poro-elastoplastic behaviour.…”

Section: Applicability Of the Biot Approachmentioning

confidence: 99%

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Advances in Numerical Reynolds-Averaged Navier–Stokes Modelling of Wave-Structure-Seabed Interactions and Scour

Díaz-Carrasco

Croquer

Tamimi

et al. 2021

JMSE

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This review paper presents the recent advances in the numerical modelling of wave–structure–seabed interactions. The processes that are involved in wave–structure interactions, which leads to sediment transport and scour effects, are summarized. Subsequently, the three most common approaches for modelling sediment transport that is induced by wave–structure interactions are described. The applicability of each numerical approach is also included with a summary of the most recent studies. These approaches are based on the Reynolds-Averaged Navier–Stokes (RANS) equations for the fluid phase, and mostly differ in how they tackle the seabed response. Finally, future prospects of research are discussed.

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Section: Rheological Modelsmentioning

confidence: 99%

Section: Applicability Of the Biot Approachmentioning

confidence: 99%

Advances in Numerical Reynolds-Averaged Navier–Stokes Modelling of Wave-Structure-Seabed Interactions and Scour

Díaz-Carrasco

Croquer

Tamimi

et al. 2021

JMSE

View full text Add to dashboard Cite

show abstract

“…e unique feature of DEM is that it can capture the behavior of individual particles and their interaction from a particulate scale [19], and unlike traditional numerical methods such as the finite element method (FEM) [20][21][22], it can analyze large discontinuous deformation. Boosted by advanced commercial software such as PFC3D, which was developed by Itasca, DEM has been successfully applied in various research disciplines [23][24][25].…”

Section: Discrete Element Modelingmentioning

confidence: 99%

A Numerical Study of Railway Ballast Subjected to Direct Shearing Using the Discrete Element Method

Zhao

Chen

2020

Advances in Materials Science and Engineering

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Railway ballast is a coarse granular material used to carry train loads and provide drainage for the rail tracks. This study presents numerical explorations of the mechanical performance of ballast aggregates subjected to direct shear tests. The discrete element method (DEM) was used to investigate the microscopic characteristics of ballast aggregates during shearing while considering contact distribution, particle rotation, and particle displacement. By testing the angle of repose of ballast aggregates, the parameters for the DEM contact model could be calibrated. Four specimens were prepared and then subjected to different normal pressures. The results show that the contact between ballast particles intensifies in terms of the amount and magnitude as the normal pressure increases. A Fourier analysis was applied to investigate the anisotropy of contact normal and the contact forces for ballast aggregates at different shearing phases. The rotational and translational movements of ballast particles were investigated, and this investigation revealed that particle rotation gradually increased as the shearing propagated. Four regions in the aggregates were identified according to the translational pattern of ballast particles. The results of this research provide an in-depth analysis of microscopic characteristics from a particulate scale.

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“…Zhang et al [13] developed a 3-D finite element method (FEM) model to simulate wave-induced response and considered the non-homogeneous soil properties. Considering the engineering applications, many investigations on the interaction between waves, seabed, and structures were conducted [14][15][16][17][18][19]. However, few studies addressed the issue related to the slope stability of temporary foundation trench for the immersed tunnel under wave loading.…”

Section: Introductionmentioning

confidence: 99%

On the Slope Stability of the Submerged Trench of the Immersed Tunnel Subjected to Solitary Wave

Chen

Wang

et al. 2021

JMSE

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Wave is a common environmental load that often causes serious damages to offshore structures. In addition, the stability for the submarine artificial slope is also affected by the wave loading. Although the landslide of submarine slopes induced by the waves received wide attention, the research on the influence of solitary wave is rare. In this study, a 2-D integrated numerical model was developed to investigate the stability of the foundation trench under the solitary wave loading. The Reynolds-averaged Stokes (RANS) equations were used to simulate the propagation of a solitary wave, while the current was realized by setting boundary inlet/outlet velocity. The pore pressure induced by the solitary wave was calculated by Darcy’s law, and the seabed was characterized by Mohr–Coulomb constitutive model. Firstly, the wave model was validated through the comparison between analytical solution and experimental data. The initial consolidation state of slope under hydrostatic pressure was achieved as the initial state. Then, the factor of stability (FOS) for the slope corresponding to different distances between wave crest and slope top was calculated with the strength reduction method. The minimum of FOS was defined as the stability index for the slope with specific slope ratio during the process of dynamic wave loading. The parametric study was conducted to examine the effects of soil strength parameters, slope ratio, and current direction. At last, the influence of upper slope ratio in a two-stage slope was also discussed.

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Numerical modelling of the fluid–seabed-structure interactions considering the impact of principal stress axes rotations

Cited by 39 publications

References 53 publications

Advances in Numerical Reynolds-Averaged Navier–Stokes Modelling of Wave-Structure-Seabed Interactions and Scour

Advances in Numerical Reynolds-Averaged Navier–Stokes Modelling of Wave-Structure-Seabed Interactions and Scour

A Numerical Study of Railway Ballast Subjected to Direct Shearing Using the Discrete Element Method

On the Slope Stability of the Submerged Trench of the Immersed Tunnel Subjected to Solitary Wave

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