Dam-Break waves over mobile bed

IF 4 2区环境科学与生态学 Q1 WATER RESOURCES Advances in Water Resources Pub Date : 2024-09-03 DOI:10.1016/j.advwatres.2024.104801

Andrea Del Gaudio , Giovanni La Forgia , Francesco De Paola , Cristiana Di Cristo , Michele Iervolino , Angelo Leopardi , Andrea Vacca

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Abstract

Dam-break waves are a major concern for communities and infrastructures in flood-prone areas. The impact of dam-break waves against rigid obstacles after propagation on a mobile bed is lacking both in experimental datasets and in numerical investigations aimed at assessing the capabilities and limitations of available morphodynamic models. To fill these gaps, a novel data set from experiments of dam-break waves propagating over an erodible bottom and impacting over a vertical wall is presented and compared with numerical simulations performed by the Saint Venant–Exner model. First, the effects of bottom mobility are discussed by comparison with the corresponding fixed bed condition. Then, supplementary conditions are investigated for different initial water levels and reservoir lengths. The comparison with the results of the numerical simulation shows that the relatively simple model employed is able to reproduce the general features of the process and the peak impact force with reasonable accuracy.

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大坝断裂波及移动床

溃坝波是洪水易发地区社区和基础设施的一个主要问题。在实验数据集和旨在评估现有形态动力学模型的能力和局限性的数值研究中，都缺乏关于溃坝波在移动河床上传播后对刚性障碍物的影响的研究。为了填补这些空白，本文介绍了一组新的实验数据，即在可侵蚀底部传播并撞击垂直墙壁的溃坝波，并将其与 Saint Venant-Exner 模型进行的数值模拟进行了比较。首先，通过与相应的固定床条件进行比较，讨论了底部流动性的影响。然后，研究了不同初始水位和水库长度下的补充条件。与数值模拟结果的比较表明，所采用的相对简单的模型能够以合理的精度再现过程的一般特征和冲击力峰值。

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来源期刊

Advances in Water Resources 环境科学-水资源

CiteScore

9.40

自引率

6.40%

发文量

171

审稿时长

36 days

期刊介绍： Advances in Water Resources provides a forum for the presentation of fundamental scientific advances in the understanding of water resources systems. The scope of Advances in Water Resources includes any combination of theoretical, computational, and experimental approaches used to advance fundamental understanding of surface or subsurface water resources systems or the interaction of these systems with the atmosphere, geosphere, biosphere, and human societies. Manuscripts involving case studies that do not attempt to reach broader conclusions, research on engineering design, applied hydraulics, or water quality and treatment, as well as applications of existing knowledge that do not advance fundamental understanding of hydrological processes, are not appropriate for Advances in Water Resources. Examples of appropriate topical areas that will be considered include the following: • Surface and subsurface hydrology • Hydrometeorology • Environmental fluid dynamics • Ecohydrology and ecohydrodynamics • Multiphase transport phenomena in porous media • Fluid flow and species transport and reaction processes