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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)
2017
会议名称13th International Symposium on River Sedimentation, ISRS 2016
会议日期September 19, 2016 - September 22, 2016
会议地点Stuttgart, Germany
会议录名称River Sedimentation - Proceedings of the 13th International Symposium on River Sedimentation, ISRS 2016
页码21
摘要Soil 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.
关键词Erosion Landforms Rivers Sedimentation Characteristic length Depth averaged modeling Non uniform velocities Overland flow modeling Saint Venant equation Sediment yields Sheet erosions Slope surfaces
ISBN号9781138029453
收录类别EI
语种英语
文献类型会议论文
条目标识符http://dspace.imech.ac.cn/handle/311007/78018
专题流固耦合系统力学重点实验室
作者单位Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
推荐引用方式
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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