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Erosion on irregular slope surface: A full N-S equation based numerical study
An Y(安翼); Liu QQ(刘青泉)
Source PublicationRiver Sedimentation - Proceedings of the 13th International Symposium on River Sedimentation, ISRS 2016
Conference Name13th International Symposium on River Sedimentation, ISRS 2016
Conference DateSeptember 19, 2016 - September 22, 2016
Conference PlaceStuttgart, Germany
AbstractSoil erosion by overland flowon hillslopes is one of the most crucial fundamental sediment yield processes. Generally, Saint-Venant equation based overland flow model is widely used to model this special flow, and in turn, the sheet erosion. However, it becomes more and more clear that the overland flow, which generally involves irregular micro landform, could behave different characteristics from river flow in which classical depth-averaged model suits well. The key issue is that the characteristic length of the irregular micro landform is considerable large comparing with the overland flow depth, which leads to nonuniform velocity profile in the depth direction. Thus, this paper employed full Navier-Stokes equation to study the overland flow on partially inundated irregular micro-relief and discuss the self-enhanced sheet erosion processes. © 2017 Taylor & Francis Group, London.
KeywordErosion Landforms Rivers Sedimentation Characteristic length Depth averaged modeling Non uniform velocities Overland flow modeling Saint Venant equation Sediment yields Sheet erosions Slope surfaces
Indexed ByEI
Document Type会议论文
AffiliationInstitute of Mechanics, Chinese Academy of Sciences, Beijing, China
Recommended Citation
GB/T 7714
An Y,Liu QQ. Erosion on irregular slope surface: A full N-S equation based numerical study[C],2017:21.
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