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Hydraulics and Hydrodynamics of Overland Flow—Catchment, Subcatchment, Plot Scale and...
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Hydraulics and Hydrodynamics of Overland Flow—Catchment, Subcatchment, Plot Scale and Experimental Approach

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydraulics and Hydrodynamics".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 4151

Special Issue Editor

Dr. Grzegorz Janicki

E-Mail Website
Guest Editor
Faculty of Earth Sciences and Spatial Management, Maria Curie-Sklodowska University in Lublin, Lublin, Poland
Interests: fluvial and slope geomorphology; fluvial transport; hydraulics and hydrodynamic of overland flow; flash flood; gully and rill erosion

Special Issue Information

Dear Colleagues,

We invite you to submit a paper to the Special Issue titled ‘Hydraulics and Hydrodynamics of Overland Flow—Catchment, Subcatchment, Plot Scale and Experimental Approach’. The hydraulics and hydrodynamics of overland flow conditions are still poorly recognized in the literature. The vast literature on soil erosion rarely addresses physical processes associated with water flow on slope and in homogeneous catchments of low hydrological order. There is a particular lack of work presenting the results of field investigation documenting the different phases and mechanisms of slope water flow from the moment of crossing the surface detention phase. We expect articles concerning the hydraulic and hydrodynamic conditions of overland flow and their individual forms, such as linear flow and sheet flow in slope systems. We are especially interested in submissions concerning the boundary conditions of slope flow and the hydraulic regime of flow in prerills, erosional rills, and flow in episodic channels or ephemeral gullies.

Dr. Grzegorz Janicki
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • overland flow
  • slope hydrology
  • sheet flow
  • interril flow
  • rill flow
  • episodic channel flow
  • flow regime
  • hydraulic geometry
  • small catchment
  • slope sediment

Published Papers (2 papers)

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Research

19 pages, 5368 KiB  
Article
Hydraulic Geometry and Theory of Equilibrium Water Depth of Branching River
by Yun Gao, Yufeng Lv, Ying Li, Yun Pan and Enshang Yang
Water 2023, 15(3), 430; https://doi.org/10.3390/w15030430 - 20 Jan 2023
Cited by 1 | Viewed by 1719
Abstract
Based on the flow continuity formula, resistance formula, sediment transport capacity formula and width-depth ratio relationship, the hydraulic geometry relationship and theory of equilibrium water depth for a branching river are established and are suitable for arbitrary section shape. The ratio of cross-sectional [...] Read more.
Based on the flow continuity formula, resistance formula, sediment transport capacity formula and width-depth ratio relationship, the hydraulic geometry relationship and theory of equilibrium water depth for a branching river are established and are suitable for arbitrary section shape. The ratio of cross-sectional area of a distributary channel and the main stream is a power function of its bifurcation ratio with an exponent of 6/7. This was applied to a 12.5 m deep-water channel of the Yangtze River (the North Passage, Fujiangsha Waterway and Shiyezhou Waterway). The reliability of the equilibrium water depth was verified and the construction effect of the channel regulation project was predicted. The results show that the regulation project has achieved certain results on the whole, but some waterways still cannot meet the requirement of 12.5 m navigation depth. It is necessary to adjust the layout of the regulation project and focus on increasing the bifurcation ratio and reducing the flow resistance so as to increase the maximum equilibrium water depth. Full article
(This article belongs to the Special Issue Hydraulics and Hydrodynamics of Overland Flow—Catchment, Subcatchment, Plot Scale and Experimental Approach)
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24 pages, 6925 KiB  
Article
Influence of Water Depth and Slope on Roughness—Experiments and Roughness Approach for Rain-on-Grid Modeling
by Rebecca Hinsberger, Andreas Biehler and Alpaslan Yörük
Water 2022, 14(24), 4017; https://doi.org/10.3390/w14244017 - 09 Dec 2022
Cited by 2 | Viewed by 2062
Abstract
Two-dimensional (2D) models have become a well-established tool for channel flow, as well as rain-induced overland flow simulations. In channel flow simulations, slopes are usually less than a few percent and water depths are over several meters, while overland flow simulations show steep [...] Read more.
Two-dimensional (2D) models have become a well-established tool for channel flow, as well as rain-induced overland flow simulations. In channel flow simulations, slopes are usually less than a few percent and water depths are over several meters, while overland flow simulations show steep slopes and flow of a few centimeters. Despite these discrepancies, modelers transfer roughness coefficients, validated for channel flow, to overland flow. One purpose of this study is to verify whether roughness values from the literature are also valid for overland flow simulations. Laboratory experiments with different degrees of bed roughness, various discharges and a range of experimental flume slopes were carried out. For a given discharge, water depth was measured, and bed roughness was derived. Experimental results reveal that roughness shows no clear dependence on slope but is strongly dependent on water depth for vegetated surfaces. To verify the influence of different roughness approaches, they were implemented in a 2D model. A comparison of different simulation results indicates differences in the hydrograph. Here, consideration of water depth-related roughness coefficients leads to retention and translation effects. With the results of this study, modelers may enhance the precision of the hydraulic component in overland flow simulations. Full article
(This article belongs to the Special Issue Hydraulics and Hydrodynamics of Overland Flow—Catchment, Subcatchment, Plot Scale and Experimental Approach)
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