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River Modeling and Riverbed Evolution
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River Modeling and Riverbed Evolution

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

Deadline for manuscript submissions: closed (15 June 2024) | Viewed by 1686

Special Issue Editor

Dr. Xiaolei Zhang

E-Mail Website
Guest Editor
School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, China
Interests: morphodynamic model; riverbed evolution; flood routing; hyperconcentrated flood; overbank flood

Special Issue Information

Dear Colleagues,

Riverbed evolution refers to the process of siltation and erosion in the riverbed under natural conditions and after the construction of remediation structures. Riverbed evolution is a manifestation of two-phase water–sand flow movement with unconstant inlet and outlet conditions and complex movable boundaries. It is an eternal process that changes constantly between the state of disequilibrium and equilibrium. In recent years, the hydrological situation of many rivers has changed significantly due to the combined effect of climate change and human activities, bringing a series of new problems to the river evolution process. River modeling is an important research tool to predict the evolution process of riverbeds and the corresponding water and sediment movement. Therefore, river modeling is widely used to predict the evolution of riverbeds.

The aim of this Special Issue of Water seeks to understand the latest advances in river modeling and riverbed evolution, including (1) the theory and technology behind river modeling including physical experiment and mathematical modeling, (2) the impact of human activities on riverbed evolution, and (3) the evolutionary processes of riverbeds in changing environments (riverbed erosion and siltation, river type and river potential, shoreline changes, etc.). We welcome original papers addressing research themes including, but not limited to, flood routing, numerical modelling of flow and sediment transport and riverbed evolution. Relevant research outcomes are expected to support the river training and flood management practices.

Dr. Xiaolei Zhang
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

  • numerical modelling
  • riverbed evolution
  • flood routing
  • physical experiment
  • hyperconcentrated flood
  • overbank flood
  • flow and sediment transport

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Published Papers (2 papers)

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Research

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17 pages, 16365 KiB  
Article
Geographic Information System Tools for River Evolution Analysis
by Pierluigi De Rosa, Andrea Fredduzzi and Corrado Cencetti
Water 2024, 16(17), 2512; https://doi.org/10.3390/w16172512 - 4 Sep 2024
Abstract
Rivers represent naturally dynamic ecosystems that require diligent preservation efforts to maintain ecological balance and biodiversity. Understanding the evolutionary movements of rivers is crucial for effective conservation and management strategies. Geographic information systems (GISs) have emerged as indispensable tools in this domain and [...] Read more.
Rivers represent naturally dynamic ecosystems that require diligent preservation efforts to maintain ecological balance and biodiversity. Understanding the evolutionary movements of rivers is crucial for effective conservation and management strategies. Geographic information systems (GISs) have emerged as indispensable tools in this domain and provide detailed spatial analysis and visualization capabilities. This paper explores the development and application of a specific set of GIS tools called RiverMetrics, which was designed to monitor and analyze rivers’ changes over time. By leveraging these advanced tools, researchers and environmental managers can gain deeper insights into river dynamics, enabling informed decision-making to safeguard these vital ecosystems. This paper details the functionalities and benefits of these GIS tools and demonstrates their critical role in river conservation efforts. The Paglia River in Central Italy serves as a case study for demonstrating the validity of RiverMetrics tools in monitoring long-term trends. The tools offer significant advantages for monitoring and calculating various indexes such as the sinuosity, braiding index, and profile trend. They also provide researchers with a simple way to process spatial data with precision and efficiency, increasing their ability to perform correct environmental monitoring. Full article
(This article belongs to the Special Issue River Modeling and Riverbed Evolution)
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Review

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19 pages, 1334 KiB  
Review
Overbank Flow, Sediment Transport, and Channel Morphology in the Lower Yellow River: A Review
by Shasha Han, Lianjun Zhao, Ao Chang, Baichuan Liu, Jingwen Wang and Jie Li
Water 2024, 16(9), 1213; https://doi.org/10.3390/w16091213 - 24 Apr 2024
Viewed by 1126
Abstract
As a prerequisite and foundation for studying the evolution mechanism of river channels, an in-depth understanding of the cross-sectional morphology adjustment is required. As a starting point, it is crucial to systematically summarize and generalize the research findings on channel morphological adjustment obtained [...] Read more.
As a prerequisite and foundation for studying the evolution mechanism of river channels, an in-depth understanding of the cross-sectional morphology adjustment is required. As a starting point, it is crucial to systematically summarize and generalize the research findings on channel morphological adjustment obtained to date, particularly in the context of the significant changes in the water and sediment conditions of large rivers that have occurred worldwide. This paper provides a comprehensive review of the research findings on the three following aspects of the Lower Yellow River: the transverse distribution of overbank flow velocity, the transverse distribution of suspended sediment concentration, and the morphological adjustment of the river cross-section. There are various equations available to predict the lateral depth–average flow velocity distribution. These equations are classified into the two following categories: empirical and theoretical formulas. Theoretical formulas are obtained through consideration of the cross-sectional morphology, accounting for inertial force terms caused by secondary flow, and momentum transfer between the main channel and its floodplain. Similarly, empirical equations and theoretical formulas for sediment concentration transverse distribution are also summarized, given the different influencing factors and assumptions. We also discuss the morphological adjustment of river cross-sections based on the analysis of measured data, mathematical model calculation, and the physical model test. In particular, we propose the idea of revealing channel cross-section morphology evolution mechanisms from the theoretical level of water and sediment movement and distribution. This review aims to enhance understanding of overbank flow, sediment transport, and channel morphology in the Lower Yellow River and may also serve to some extent as a reference for the evolution and management of channels in other rivers. Full article
(This article belongs to the Special Issue River Modeling and Riverbed Evolution)
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