Modeling rain-driven overland flow: Empirical versus analytical friction terms in the shallow water approximation

Kirstetter G.; Hu J.; Delestre O.; Darboux F.; Lagree P. -Y.; Popinet S.; Fullana J. M.; Josserand C.

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Modeling rain-driven overland flow: Empirical versus analytical friction terms in the shallow water approximation

机译：降雨驱动的陆上流建模：浅水近似中的经验与分析摩擦项

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Modeling and simulating overland flow fed by rainfall is a common issue in watershed surface hydrology. Modelers have to choose among various friction models when defining their simulation framework. The purpose of this work is to compare the simulation quality for the Manning, Darcy-Weisbach, and Poiseuille friction models on the simple case of a constant rain on a thin experimental flume. Results show that the usual friction law of Manning is not suitable for this type of flow. The Poiseuille friction model gave the best results both on the flux at the outlet and the velocity and depth profile along the flume. The Darcy-Weisbach model shows good results for laminar flow. Additional testing should be carried out for turbulent cases. (C) 2016 Elsevier B.V. All rights reserved.

机译：在降雨流域地表水文学中，模拟和模拟降雨带来的陆上径流是一个普遍的问题。在定义其仿真框架时，建模者必须在各种摩擦模型中进行选择。这项工作的目的是比较在稀薄的实验水槽上持续降雨的简单情况下，Manning，Darcy-Weisbach和Poiseuille摩擦模型的仿真质量。结果表明，曼宁惯用的摩擦定律不适用于这种类型的流动。 Poiseuille摩擦模型在出口处的通量以及沿水槽的速度和深度分布方面都给出了最佳结果。 Darcy-Weisbach模型显示出良好的层流结果。对于动荡的情况，应进行附加测试。（C）2016 Elsevier B.V.保留所有权利。

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《Journal of Hydrology》 |2016年第null期|共9页
作者
Kirstetter G.; Hu J.; Delestre O.; Darboux F.; Lagree P. -Y.; Popinet S.; Fullana J. M.; Josserand C.;
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正文语种 eng
中图分类水文科学（水界物理学）;
关键词
Shallow water; Saint Venant; Overland flow; Rain; Friction; Poiseuille;

机译：浅水;圣维南;陆流;雨水;摩擦;泊瓦;

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7. Modeling rain-driven overland flow: Empirical versus analytical friction terms in the shallow water approximation [O] . Kirstetter, G, Hu, J, Delestre, O, 2016

机译：降雨驱动的陆上流建模：浅水近似中的经验与分析摩擦项

Modeling rain-driven overland flow: Empirical versus analytical friction terms in the shallow water approximation

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