Validation of 2D shock capturing flood models around a surcharging manhole
Validation of 2D shock capturing flood models around a surcharging manhole
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DOI：
10.1080/1573062x.2017.1279193
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发表时间：
2017-02
影响因子：
2.7
通讯作者：
R. Martins;G. Kesserwani;M. Rubinato;Seungsoo Lee;Jorge Leandro;S. Djordjević;J. Shucksmith
中科院分区：
文献类型：
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作者：
R. Martins;G. Kesserwani;M. Rubinato;Seungsoo Lee;Jorge Leandro;S. Djordjević;J. Shucksmith
摘要本文详细验证了水平漫滩流受下水道溢流通过检修孔影响的有限体积（FV）洪水模型。基于两种近似Riemann解，HLLC和Roe，在四边形结构和三角形非结构网格类型上，考虑了二维浅水方程的FV数值解。对高分辨率的实验数据集使用的物理模型的下水道系统连接到一个河漫滩通过一个沙井的模型进行验证。经验证，模型的灵敏度与附加流量/表面流入比成正比，因此需要用户进行更多校准，特别是在涉及下水道至洪泛区流量的局部建模时。我们的研究结果提供了新的证据表明，冲击捕捉FV为基础的洪水模型适用于模拟本地化的下水道到洪泛区流的相互作用。
Abstract This work offers a detailed validation of finite volume (FV) flood models in the case where horizontal floodplain flow is affected by sewer surcharge flow via a manhole. The FV numerical solution of the 2D shallow water equations is considered based on two approximate Riemann solvers, HLLC and Roe, on both quadrilateral structured and triangular unstructured mesh-types. The models are validated against a high resolution experimental data-set obtained using a physical model of a sewer system linked to a floodplain via a manhole. It was verified that the sensitivity of the models is inversely proportional to the surcharged flow/surface inflow ratio, and therefore requires more calibration from the user especially when concerned with localised modelling of sewer-to-floodplain flow. Our findings provide novel evidence that shock capturing FV-based flood models are applicable to simulate localised sewer-to-floodplain flow interaction.