Two-dimensional numerical modeling of the longitudinal and lateral channel deformations in alluvial rivers

被引：3

作者：

Xia, JQ ^{[1
]}

Wang, GQ ^{[1
]}

Wu, BS ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Hydraul Engn, Beijing 100084, Peoples R China

来源：

SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES | 2004年 / 47卷 / Suppl 1期

基金：

中国国家自然科学基金;

关键词：

soil riverbanks; bank erosion; longitudinal channel deformation; lateral channel deformation; 2D numerical model;

D O I：

10.1360/04ez0017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two kinds of bank erosion mechanisms were analyzed, including fluvial and non-fluvial controlled mechanisms, and mechanical methods of simulating the erosion processes of cohesive, non-cohesive and composite riverbanks were improved. Then a two-dimensional numerical model of the channel deformation was developed, consisting of a 2D flow and sediment transport submodel and bank-erosion submodels of different soil riverbanks. In the model, a new technique for updating the bank geometry during the bed evolution was presented, which combines closely two kinds of submodels. The proposed model is capable of not only predicting the processes of flood routing and longitudinal channel deformation in natural rivers, but also simulating the processes of lateral channel deformation, especially the processes of lateral erosion and failure of cohesive, non-cohesive and composite riverbanks.

引用

页码：199 / 211

页数：13

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