General shallow water equations (GSWEs)

IF 1.7 3区工程技术 Q3 ENGINEERING, CIVIL

Journal of Hydraulic Research Pub Date : 2023-05-04 DOI:10.1080/00221686.2023.2224756

D. Pokrajac

引用次数: 0

Abstract

Shallow water equations (SWEs) have been traditionally derived by integrating fundamental flow equations over a flow profile above a single point in a horizontal or nearly horizontal plane, with the main assumptions that the profile thickness is much smaller than other two dimensions and it contains only water. This paper presents the derivation of generalized SWEs (GSWEs) obtained for a finite plan area, allowing for the presence of phases other than water, such as air, grains, vegetation, and debris, which can be either stationary or mobile. The derivation provides a rigorous basis for various applications of layer-averaged models and opens numerous research questions, some of which are highlighted in the paper.

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一般浅水方程(GSWEs)

浅水方程(SWEs)传统上是通过在水平或近水平平面上的单个点以上的流动剖面上积分基本流动方程推导出来的，主要假设剖面厚度比其他两个维度小得多，并且只包含水。本文介绍了有限平面区域的广义SWEs (GSWEs)的推导，允许存在除水以外的阶段，如空气、颗粒、植被和碎屑，这些阶段可以是静止的，也可以是移动的。这一推导为层平均模型的各种应用提供了严格的基础，并提出了许多研究问题，其中一些问题在本文中得到了重点讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Hydraulic Research 工程技术-工程：土木

CiteScore

4.90

自引率

4.30%

发文量

审稿时长

6.6 months

期刊介绍： The Journal of Hydraulic Research (JHR) is the flagship journal of the International Association for Hydro-Environment Engineering and Research (IAHR). It publishes research papers in theoretical, experimental and computational hydraulics and fluid mechanics, particularly relating to rivers, lakes, estuaries, coasts, constructed waterways, and some internal flows such as pipe flows. To reflect current tendencies in water research, outcomes of interdisciplinary hydro-environment studies with a strong fluid mechanical component are especially invited. Although the preference is given to the fundamental issues, the papers focusing on important unconventional or emerging applications of broad interest are also welcome.