3D Modeling and Mechanism Analysis of Breaking Wave-Induced Seabed Scour around Monopile
Joint Authors
Liu, Xiaojian
Liu, Cheng
Zhu, Xiaowei
He, Yong
Wang, Qisong
Wu, Zhiyuan
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-03-17
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
Breaking wave-induced scour is recognized as one of the major causes of coastal erosion and offshore structure failure, which involves in the full 3D water-air-sand interaction, raising a great challenge for the numerical simulation.
To better understand this process, a nonlinear 3D numerical model based on the open-source CFD platform OpenFOAM® was self-developed in this study.
The Navier–Stokes equations were used to compute the two-phase incompressible flow, combining with the finite volume method (FVM) to discretize calculation domain, a modified VOF method to track the free surface, and a k−ε model to closure the turbulence.
The nearshore sediment transport process is reproduced in view of shear stress, suspended load, and bed load, in which the terms of shear stress and suspended load were updated by introducing volume fraction.
The seabed morphology is updated based on Exner equation and implemented by dynamic mesh technique.
The mass conservative sand slide algorithm was employed to avoid the incredible vary of the bed mesh.
Importantly, a two-way coupling method connecting the hydrodynamic module with the beach morphodynamic module is implemented at each computation step to ensure the fluid-sediment interaction.
The capabilities of this model were calibrated by laboratory data from some published references, and the advantages/disadvantages, as well as proper recommendations, were introduced.
Finally, nonbreaking- and breaking wave-induced scour around the monopile, as well as breaking wave-induced beach evolution, were reproduced and discussed.
This study would be significantly helpful to understand and evaluate the nearshore sediment transport.
American Psychological Association (APA)
Liu, Xiaojian& Liu, Cheng& Zhu, Xiaowei& He, Yong& Wang, Qisong& Wu, Zhiyuan. 2020. 3D Modeling and Mechanism Analysis of Breaking Wave-Induced Seabed Scour around Monopile. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-17.
https://search.emarefa.net/detail/BIM-1193368
Modern Language Association (MLA)
Liu, Xiaojian…[et al.]. 3D Modeling and Mechanism Analysis of Breaking Wave-Induced Seabed Scour around Monopile. Mathematical Problems in Engineering No. 2020 (2020), pp.1-17.
https://search.emarefa.net/detail/BIM-1193368
American Medical Association (AMA)
Liu, Xiaojian& Liu, Cheng& Zhu, Xiaowei& He, Yong& Wang, Qisong& Wu, Zhiyuan. 3D Modeling and Mechanism Analysis of Breaking Wave-Induced Seabed Scour around Monopile. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-17.
https://search.emarefa.net/detail/BIM-1193368
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1193368