Beach stabilization by the laying of a drainage layer

In the present study, the stabilization effects of the laying of a drainage layer in a sandy beach were analyzed. The numerical model developed by Hur et al. （2011） was used to examine the characteristics of wave-sandy beach interaction with/without a drainage layer. This numericai model directly si...

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Bibliographic Details
Published inScience China. Technological sciences Vol. 55; no. 9; pp. 2625 - 2639
Main Authors Hur, Dong-Soo, Lee, Woo-Dong, Cho, Won-Chul
Format Journal Article
LanguageEnglish
Published Heidelberg SP Science China Press 01.09.2012
Subjects
Beaches
Drainage
Engineering
Fluid flow
Groundwater levels
Laying
Marine
Mathematical models
Stabilization
Turbulent flow
地下水位
多孔介质
排水层
数值模型
海滩
湍流模型
稳定
铺设
groundwater level
swash zone
foreshore
drainage layer
LES-WASS-3D (3-D numerical simulation)
beach stabilization
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Summary:In the present study, the stabilization effects of the laying of a drainage layer in a sandy beach were analyzed. The numerical model developed by Hur et al. （2011） was used to examine the characteristics of wave-sandy beach interaction with/without a drainage layer. This numericai model directly simulates Wave-Structure-Seabed/Sandy （WASS） beach interaction by consid- ering flow through a porous medium with inertia, laminar and turbulent resistances, and determines the eddy viscosity with the Large Eddy Simulation （LES） turbulent model in a 3-D wave field （LES-WASS-3D）. Based on the numerical results, it ap- pears that the installation of a drainage layer in the beach results in a decrease in both the mean groundwater level around the foreshore and the flow moving offshore on the beach surface. Spatial distributions of the mean groundwater level and wave setup around the foreshore with various arrangements of the drainage layer and conditions of the incident wave are also discussed in this paper.
Bibliography:drainage layer, groundwater level, foreshore, LES-WASS-3D （3-D numerical simulation）, beach stabilization, swash zone
In the present study, the stabilization effects of the laying of a drainage layer in a sandy beach were analyzed. The numerical model developed by Hur et al. （2011） was used to examine the characteristics of wave-sandy beach interaction with/without a drainage layer. This numericai model directly simulates Wave-Structure-Seabed/Sandy （WASS） beach interaction by consid- ering flow through a porous medium with inertia, laminar and turbulent resistances, and determines the eddy viscosity with the Large Eddy Simulation （LES） turbulent model in a 3-D wave field （LES-WASS-3D）. Based on the numerical results, it ap- pears that the installation of a drainage layer in the beach results in a decrease in both the mean groundwater level around the foreshore and the flow moving offshore on the beach surface. Spatial distributions of the mean groundwater level and wave setup around the foreshore with various arrangements of the drainage layer and conditions of the incident wave are also discussed in this paper.
11-5845/TH
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-7321
1869-1900
DOI:10.1007/s11431-012-4886-6