Numerical study of wave-induced soil response in a sloping seabed in the vicinity of a breakwater

Zhao, Hongyi; Jeng, Dong‐Sheng

doi:10.1016/j.apor.2015.04.008

Cited by 57 publications

(17 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The wave sub-model is based on the FDM solved equation in Flow 3D framework, while the COMSOL Multiphysics [28] software was used to establish the seabed sub-model, which the FEM solved-equation is assigned as the governing equation. Numerous studies in the past have employed these set of equations in the investigation of the WSSI around offshore pipelines [29,30] breakwater structures [31,32] and offshore pile structures [20,21].…”

Section: Theoretical Modelmentioning

confidence: 99%

3-Dimensional numerical study of wave-induced seabed response around three different types of wind turbine pile foundations

et al. 2019

View full text Add to dashboard Cite

In this paper, preliminary study is conducted on oscillatory wave-induced seabed response around three configuration cases of pile support foundations applying a 3-dimensional integrated numerical model to study and comparatively analyzed them. In the past, numerous studies have been conducted into exploring the wave-seabed-structure interaction (WSSI) mostly around monopile. However, attention on other pile support structure foundations is minimal. In this present study, Reynolds-Average Navier-Stokes equations with k-turbulence closure as well as Biot's poroelastic theory are employed to govern the wave motion and porous seabed foundation respectively. The present numerical model is compared with available physical experimental data to determine its capability of simulating the WSSI around pile structures. Results analysis indicate that the impact of wave forces and wave pressure on the gravity-based support foundation is relatively higher than that of the monopile and tripod support pile due to the large peripheral area it occupied. Result of the momentary wave-induced liquefaction depth for the three configuration cases of pile structures at the upstream side in the seabed foundation shows that the tripod support pile has higher tendency resistance against wave-induced liquefaction, which may perhaps be due to the additional legs.

show abstract

Section: Theoretical Modelmentioning

confidence: 99%

3-Dimensional numerical study of wave-induced seabed response around three different types of wind turbine pile foundations

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The present numerical model is composed of wave sub-model and seabed sub-model, which are governed by RANS equations and QS (quasi-static) Biot's equations for poroelastic medium [14], respectively. In the previous studies, these two sets of governing equations have been adopted in the examination of wave-induced seabed response around pile foundations [25,26,29], breakwaters [39], and pipelines [40,41]. The integration method of these two sub-models will be also demonstrated in this section.…”

Section: Numerical Modelmentioning

confidence: 99%

“…Vertical distribution of pore pressure against experiment data of Tsui and Helfrich[39]. Symbols denote the experiment data, and lines denotes the numerical results.…”

mentioning

confidence: 99%

Numerical study of pile group effect on wave-induced seabed response

Tong

Liao

Jeng

et al. 2018

Applied Ocean Research

View full text Add to dashboard Cite

Wave-induced seabed response around pile foundations affects the seabed stability, thereby threatening the structure safety, and numerous studies have been performed to explore the wave-structure-seabed interaction (WSSI) around mono-pile. However, little attention has been paid to WSSI around pile groups. In the present study, based on an integrated model, WSSI around three-pile group is numerically examined, and the effects of wave obliquity, pile diameter, pile spacing and embedment depth are parametrically explored. In this model, Reynolds-Averaged Navier-Stokes (RANS) equations with k- turbulence model and Biot's quasi-static (QS) model for poro-elastic medium are adopted to govern the wave motion and seabed response, respectively. The results reveal that the effects of wave obliquity and pile diameter are significant, whereas the influences of pile spacing and embedment depth are negligible.

show abstract

“…The quantity τ(x, z) in Eq. 16 More details about this new definition can be referred to in [20,21,22]. The quantity σ in Eq.…”

Section: Poro-elastoplastic Solutionsmentioning

confidence: 99%

Numerical modelling of liquefaction in loose sand deposits subjected to ocean waves

Zhao

Jeng

Liao

et al. 2018

Applied Ocean Research

Self Cite

View full text Add to dashboard Cite

The failure of marine structures is often attributed to liquefaction in loose sand deposits that are subjected to ocean waves. In this study, a two-dimensional integrated numerical model is developed to characterize the liquefaction behaviours of loosely deposited seabed foundations under various types of ocean waves. In the present model, Reynolds-Averaged Navier-Stokes (RANS) equations are used to simulate the surface wave motion, and Biot's consolidation equations are used to link the solid-pore fluid interactions in a porous medium. A poro-elasto-plastic solution is used to reproduce foundation behaviour under cyclic shearing. Unlike previous investigations, both oscillatory and residual soil responses were considered; they are coupled in an instantaneous approach. Verification of the model results to the previous centrifugal wave tests is carried out, obtaining fairly good agreement. Numerical examples show that foundation behaviour under various types of wave loading, particularly standing waves or a solitary wave, embodies a completely two-dimensional process in terms of residual pore pressure development. The parametric studies demonstrate that liquefaction caused by the build-up of pore pressures is more likely to occur in loosely deposited sand foundations with poor drainage and under large waves.

show abstract

Numerical study of wave-induced soil response in a sloping seabed in the vicinity of a breakwater

Cited by 57 publications

References 45 publications

3-Dimensional numerical study of wave-induced seabed response around three different types of wind turbine pile foundations

3-Dimensional numerical study of wave-induced seabed response around three different types of wind turbine pile foundations

Numerical study of pile group effect on wave-induced seabed response

Numerical modelling of liquefaction in loose sand deposits subjected to ocean waves

Contact Info

Product

Resources

About