Rivers, Estuaries, and Coastal Zones: Sediment Transport and Morphodynamical Models

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water Erosion and Sediment Transport".

Deadline for manuscript submissions: 25 August 2024 | Viewed by 501

Special Issue Editor


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Guest Editor
Department of Civil and Environmental Engineering, Koszalin University of Technology, Koszalin, Poland
Interests: rivers, estuaries and coastal zones; hydrodynamics; sediment transport; morpho-dynamics; coastal engineering; granular materials in soil mechanics

Special Issue Information

Dear Colleagues,

Studies that enhance our understanding of how different hydrodynamical inputs influence sediment transport mechanisms and morphodynamic alterations across diverse landscapes are welcome.

The overall focus of this Special Issue is on sediment transport and the bottom changes this induces in rivers, estuaries and coastal zones, seeking to foster discussion on sediment transport mechanisms and morphodynamical changes stemming from various hydrodynamical inputs including, but not limited to, wave motion and steady flow. We aim to foster discussion of an extensive range of grain mobility conditions, from incipient motion to a fully mobilised bed, and we particularly encourage submissions that focus on bedload, contact load, and suspended load close to the bottoms of water courses. This Special Issue is dedicated to comparative approaches to the study of sediment transport and morphodynamical change modelling and experiments in rivers, estuaries, and coastal zones.

Additionally, we invite contributions that employ new technologies and innovative methodologies for monitoring sediment transport and those that investigate the impacts of global changes on sediment transport in rivers, estuaries, and coastal zones. This Special Issue aims to provide robust insights and guidelines for decisionmakers, based on comprehensive analyses of sediment transport mechanisms and their implications for morphodynamic changes in aquatic environments.

Prof. Dr. Leszek M. Kaczmarek
Guest Editor

Manuscript Submission Information

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Keywords

  • granular transport
  • sediment mixtures
  • morphodynamics
  • rivers
  • estuaries
  • coastal zones
  • bedload
  • contact load
  • suspended load

Published Papers (1 paper)

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Research

25 pages, 5907 KiB  
Article
Modelling of Granular Sediment Transport in Steady Flow over a Mobile Sloped Bed
by Jarosław Biegowski, Magdalena Pietrzak, Iwona Radosz and Leszek M. Kaczmarek
Water 2024, 16(14), 2022; https://doi.org/10.3390/w16142022 - 17 Jul 2024
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Abstract
This paper introduces a three-layer system, proposing a comprehensive model of granular mixture transport over a mobile sloped bed in a steady flow. This system, consisting of the bottom, contact, and upper zones, provides complete, continuous sediment velocity and concentration vertical profiles. The [...] Read more.
This paper introduces a three-layer system, proposing a comprehensive model of granular mixture transport over a mobile sloped bed in a steady flow. This system, consisting of the bottom, contact, and upper zones, provides complete, continuous sediment velocity and concentration vertical profiles. The aim of this study is to develop and experimentally verify this model for sediment transport over a bottom locally sloping in line with or opposite the direction of sediment flow. The model considers gravity’s effect on sediment transport in the bottom (dense) layer when the component of gravity parallel to the bottom acts together with shear stresses associated with water flow. This is a crucial factor often overlooked in previous studies. This effect causes an increase in velocity in the mobile sublayer of the dense layer and significantly affects the vertical distributions of velocity and concentration above this layer. The proposed shear variation due to the interaction between fractions and an intensive sediment mixing and sorting process over a mobile sloped bed adds to the novelty of our approach. The data sets used for the model’s validation cover various conditions, including slopes, grain diameters, densities, and grain mobility conditions, from incipient motion to a fully mobilized bed. This extensive validation process instils confidence in the theoretical description and its applicability to real-world scenarios in the design of hydraulic infrastructure, such as dams, barrages, bridges, and irrigation, and flood control systems. Full article
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