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首页> 外文期刊>TAO: Terrastrial, atmospheric, and oceanic sciences >Physically-Based One-Dimensional Distributed Rainfall-Runoff Model Using the Finite Volume Method and Grid Network Flow Analysis
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Physically-Based One-Dimensional Distributed Rainfall-Runoff Model Using the Finite Volume Method and Grid Network Flow Analysis

机译:基于有限体积法和网格网络流分析的基于物理的一维分布式降雨径流模型

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摘要

This work develops a grid based rainfall-runoff model (GRM), which is a physically based and spatially distributed model. Surface flow was analyzed using a kinematic wave model with the governing equations discretized using the finite volume method (FVM). This paper suggests a grid network flow analysis technique using variable rainfall intensity according to the flow directions to analyze one-dimensional flows between the grids. The model was evaluated by applying it to the Wuicheon watershed, a tributary of the Nakdonggang (Riv.), in Korea. The results showed that the grid-based, one-dimensional kinematic wave model adopted the FVM and the grid network flow analysis technique well. The simulation results showed good agreement with the observed hydrographs and the initial soil saturation ratio was most sensitive to the modeling results.
机译:这项工作开发了基于网格的降雨径流模型(GRM),这是一种基于物理的空间分布模型。使用运动波模型分析表面流,并使用有限体积法(FVM)离散化控制方程。本文提出了一种网格流分析技术,它根据流向采用可变降雨强度来分析网格之间的一维流。通过将模型应用于韩国Nakdonggang(Riv。)的支流Wuicheon流域,对该模型进行了评估。结果表明,基于网格的一维运动波模型很好地采用了FVM和网格网络流分析技术。模拟结果与观测的水文图吻合良好,初始土壤饱和度比对模拟结果最为敏感。

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