scholarly journals A non-equilibrium sediment transport model for rill erosion

2007 ◽  
Vol 21 (8) ◽  
pp. 1074-1084 ◽  
Author(s):  
Q. Q. Liu ◽  
L. Chen ◽  
J. C. Li ◽  
V. P. Singh
Keyword(s):  
Sediment Transport ◽  
Transport Model ◽  
Rill Erosion ◽  
Sediment Transport Model ◽  
Non Equilibrium

scholarly journals A Novel Slope Failure Operator for a Non-Equilibrium Sediment Transport Model

10.29007/3rtl ◽  
2018 ◽  
Author(s):  
Jiaheng Zhao ◽  
Ilhan Özgen ◽  
Dongfang Liang ◽  
Reinhard Hinkelmann
Keyword(s):  
Sediment Transport ◽  
Slope Failure ◽  
Transport Model ◽  
Computational Cost ◽  
Measurement Data ◽  
Bank Failure ◽  
Total Load ◽  
Model Based ◽  
Sediment Transport Model ◽  
Non Equilibrium

Complex transport mechanism and interaction between fluid and sediment make the mathematical and numerical modeling of sediment transport very challenging. Different types of models can lead to different results. This paper investigates a non-equilibrium sediment transport model based on the total load. In this type of model, it is assumed that a bed slide will occur if the bed slope reaches a critical angle. This is enabled by means of a slope failure operator. Existing slope failure operators usually suffer from the high computational cost and may fail at wet/dry interfaces. The main contribution of this work is the development of a novel slope failure operator for the total load transport model, based on a modified mass balance approach. The proposed approach is verified in three test cases, involving bank failure, dyke overtopping and a two-dimensional bank failure. It is shown that the proposed approach yields good agreement with analytical results and measurement data.

scholarly journals A Non-Equilibrium Sediment Transport Model for Dam Break Flow over Moveable Bed Based on Non-Uniform Rectangular Mesh

Water ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 616 ◽  
Author(s):  
Gangfeng Wu ◽  
Zhehao Yang ◽  
Kefeng Zhang ◽  
Ping Dong ◽  
Ying-Tien Lin
Keyword(s):  
Sediment Transport ◽  
Transport Model ◽  
Dam Break ◽  
Sediment Transport Model ◽  
Rectangular Mesh ◽  
Dam Break Flow ◽  
Non Equilibrium
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