Three-dimensional smoothed particle hydrodynamics modeling of near-shore current flows over rough topographic surface

Eslam Gabreil; Haitao Wu; Chen Chen; Jiaye Li; Matteo Rubinato; Xing Zheng; Songdong Shao

doi:10.3389/fmars.2022.935098

Three-dimensional smoothed particle hydrodynamics modeling of near-shore current flows over rough topographic surface

Eslam Gabreil^*
, Haitao Wu
, Chen Chen
, Jiaye Li
, Matteo Rubinato
, Xing Zheng
, Songdong Shao

^*Corresponding author for this work

Qinghai University,
aboratory of Ecological Protection and High-Quality Development in the Upper Yellow River
Dongguan University of Technology
Coventry University
Harbin Engineering University
University of Gharyan

Research output: Contribution to journal › Article › peer-review

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Abstract

In this study, a three-dimensional (3D) numerical model based on the smoothed particle hydrodynamics (SPH) approach was developed to simulate the near-shore current flows over a rough topographic surface in the coastal area, where the flows are shallow and demonstrate strong turbulent characteristics. The numerical program is based on the open-source code SPHysics (http://www.sphysics.org), and two major improvements are made to treat the turbulence and rough boundary effects: A modified sub-particle-scale (SPS) eddy viscosity model is developed to address the turbulence transfer of flows, and a drag force equation is included in the momentum equations to account for the influence of roughness element on the bed and lateral boundaries. The computed results of flow velocity, shear stress, and free surface characteristics are compared with the laboratory measurements for a variety of test conditions. It has shown that the present SPH model can accurately simulate 3D-free surface near-shore current flows over a realistic topography with roughness.

Original language	English
Article number	935098
Number of pages	16
Journal	Frontiers in Marine Science
Volume	9
Early online date	29 Jul 2022
DOIs	https://doi.org/10.3389/fmars.2022.935098
Publication status	Published - 29 Jul 2022

Bibliographical note

Copyright © 2022 Gabreil, Wu, Chen, Li, Rubinato, Zheng and Shao. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s)
are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or
reproduction is permitted which does not comply with these terms.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure
SDG 11 Sustainable Cities and Communities
SDG 13 Climate Action

Keywords

drag force
near-shore current
rough topography
SPH
SPHysics
turbulence

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10.3389/fmars.2022.935098

Three-dimensional smoothed particle hydrodynamics modeling of near-shore current flows over rough topographic surface - FRONTIERS IN MARINE SCIENCE
Copyright © 2022 Gabreil, Wu, Chen, Li, Rubinato, Zheng and Shao. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Final published version, 7.19 MBLicence: CC BY 4.0

Cite this

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title = "Three-dimensional smoothed particle hydrodynamics modeling of near-shore current flows over rough topographic surface",

abstract = "In this study, a three-dimensional (3D) numerical model based on the smoothed particle hydrodynamics (SPH) approach was developed to simulate the near-shore current flows over a rough topographic surface in the coastal area, where the flows are shallow and demonstrate strong turbulent characteristics. The numerical program is based on the open-source code SPHysics (http://www.sphysics.org), and two major improvements are made to treat the turbulence and rough boundary effects: A modified sub-particle-scale (SPS) eddy viscosity model is developed to address the turbulence transfer of flows, and a drag force equation is included in the momentum equations to account for the influence of roughness element on the bed and lateral boundaries. The computed results of flow velocity, shear stress, and free surface characteristics are compared with the laboratory measurements for a variety of test conditions. It has shown that the present SPH model can accurately simulate 3D-free surface near-shore current flows over a realistic topography with roughness.",

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AB - In this study, a three-dimensional (3D) numerical model based on the smoothed particle hydrodynamics (SPH) approach was developed to simulate the near-shore current flows over a rough topographic surface in the coastal area, where the flows are shallow and demonstrate strong turbulent characteristics. The numerical program is based on the open-source code SPHysics (http://www.sphysics.org), and two major improvements are made to treat the turbulence and rough boundary effects: A modified sub-particle-scale (SPS) eddy viscosity model is developed to address the turbulence transfer of flows, and a drag force equation is included in the momentum equations to account for the influence of roughness element on the bed and lateral boundaries. The computed results of flow velocity, shear stress, and free surface characteristics are compared with the laboratory measurements for a variety of test conditions. It has shown that the present SPH model can accurately simulate 3D-free surface near-shore current flows over a realistic topography with roughness.

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Three-dimensional smoothed particle hydrodynamics modeling of near-shore current flows over rough topographic surface

Abstract

Bibliographical note

UN SDGs

Keywords

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