Numerical simulation for sediment transport using MPS-DEM coupling model

被引：45

作者：

Harada, Eiji ^{[1
]}

Gotoh, Hitoshi ^{[1
]}

Ikari, Hiroyuki ^{[1
]}

Khayyer, Abbas ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Civil & Earth Resources Engn, Nishikyo Ku, Katsura Campus, Kyoto 6158540, Japan

来源：

ADVANCES IN WATER RESOURCES | 2019年 / 129卷

基金：

日本学术振兴会;

关键词：

MPS method; DEM; Swash zone; Sediment transport; Seepage flow; SWASH-ZONE; INNER-SURF; GROUNDWATER; GRAVEL; FLOW;

D O I：

10.1016/j.advwatres.2017.08.007

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Interactions between the uprush and backwash waves around a swash zone cause a complex water surface with wave breaking. Infiltration and exfiltration on a permeable beach face produce significant effects on the bottom shear stress. Abrupt changes of the bottom shear stress induced by uprush waves onto a dry bed have a significant impact on the estimation of sediment flux. In order to simulate, with a high degree of accuracy, a violent flow with wave breaking and complex moving bed boundaries along the on-off shore direction, wave motions are solved by using an enhanced particle method based on the MPS (Moving Particle Semi-implicit) method, while the DEM (Discrete Element Method) is used for a movable bed simulation. Consequently, the high potential of a MPS-DEM coupling model to simulate the swash beach process is clearly demonstrated by comparison with previous experimental results. Furthermore, the significance of the seepage flow in the swash beach process is shown with referring the Nielsen's modified Shields number. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：354 / 364

页数：11