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Water
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Flow Dynamics and Sediment Transport in Rivers and Coasts
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Flow Dynamics and Sediment Transport in Rivers and Coasts

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

Deadline for manuscript submissions: 30 October 2025 | Viewed by 707

Special Issue Editors

Dr. Jueyi Sui

E-Mail Website
Guest Editor
School of Engineering, University of Northern British Columbia, Prince George, BC V2N 4Z9, Canada
Interests: fluvial hydraulics; local scour; river ice hydraulics; sediment transport; eco-hydraulics; snow hydrology; numerical simulation
Special Issues, Collections and Topics in MDPI journals
Dr. Wenxin Huai

E-Mail Website
Guest Editor
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
Interests: environmental hydraulics; solute and sediment transport; computational fluid mechanics; river habitat restoration; ecological hydraulic control; applied and computational mathematics
Prof. Dr. Jun Wang

E-Mail Website
Guest Editor
School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, China
Interests: river ice; ice dynamics; ice hydrology; experimental study; local scour; ice regime; numerical model
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In natural rivers and coastal regions, flow dynamics and sediment transport are important processes that keep shaping the land surface. Fluvial hydraulics deals with the flow of water, the motion of sediment, and the erosion of channel beds. Flow dynamics becomes more complex, as the velocity, slope, depth, and channel roughness are all subject to changes resulting from erodible beds and sediment transport due to the presence of in-stream infrastructure, vegetation in channel beds/banks, and ice cover on the water surface. As a consequence, it can lead to a variety of challenges for public safety, the operation and maintenance of water infrastructures, transportation and navigation in estuary and coastal regions, and for environmental and aquatic ecosystems.

To date, scientists have conducted a large amount of cutting-edge research on all aspects of sediment transport and fluvial hydraulics in rivers and coasts. Many research papers have been published to help researchers continue to explore this subject in the right direction. The aim of this Special Issue is to showcase renewed contributions that improve the knowledge of this theme, including, but not limited to, channel bed deformation, local scour around infrastructures, fluvial processes in the presence of vegetation, river ice hydraulics, the environmental and ecological impacts of sedimentation, the effect of reservoir sedimentation, coastal erosion, and wave dynamics. Research works regarding tidal power generation, the impact of river ice on the operation of hydropower plants and other water infrastructure, and hydrodynamic and hydrological modeling, are also welcome.

Dr. Jueyi Sui
Dr. Wenxin Huai
Prof. Dr. Jun Wang
Guest Editors

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

  • eco-hydraulics
  • fluvial hydraulics
  • local scour
  • riverbed deformation
  • sediment transport
  • turbulence
  • wave dynamics

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Published Papers (2 papers)

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Research

25 pages, 9643 KiB  
Article
Numerical Modeling of the Three-Dimensional Wave-Induced Current Field
by Gabriela Gic-Grusza
Water 2025, 17(9), 1336; https://doi.org/10.3390/w17091336 - 29 Apr 2025
Abstract
This paper showcases the results of three-dimensional numerical modeling of coastal zone hydrodynamics, based on a recently developed three-dimensional analytical model incorporating a three-dimensional formulation of radiation stress. The study examines the influence of cross-shore and alongshore bathymetric variability on hydrodynamic model results, [...] Read more.
This paper showcases the results of three-dimensional numerical modeling of coastal zone hydrodynamics, based on a recently developed three-dimensional analytical model incorporating a three-dimensional formulation of radiation stress. The study examines the influence of cross-shore and alongshore bathymetric variability on hydrodynamic model results, focusing on internal volumetric current transport, bottom friction, free surface elevation, and velocity distributions. Using coastal zone cases with increasing complexity and wave datasets, we analyze differences between 2D and 3D model solutions, as well as theoretical calculations based on analytical solutions. Results indicate that in idealized, homogeneous bathymetric conditions, 2D and 3D models yield similar outputs. However, increased bathymetric complexity introduces significant variations, particularly in velocity fields and transport dynamics. Alongshore variability further modifies these distributions, emphasizing the role of lateral gradients often neglected in simplified models. The study demonstrates that neglecting alongshore bathymetric heterogeneity can lead to underestimation of key hydrodynamic variables, affecting model accuracy in coastal applications. Two-dimensional current transport fields reveal circulation patterns and possible rip current formations, suggesting that the proposed model framework provides improved insights into real-world coastal hydrodynamics. These findings highlight the necessity of incorporating three-dimensional bathymetric variability in predictive models to enhance accuracy in coastal engineering and environmental management applications. Full article
(This article belongs to the Special Issue Flow Dynamics and Sediment Transport in Rivers and Coasts)
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20 pages, 12609 KiB  
Article
Response of Riverbed Shaping to a Flood Event in the Reach from Alar to Xinquman in the Mainstream of the Tarim River
by Mingcheng Zhao, Yujian Li, Lin Li and Wenhong Dai
Water 2025, 17(7), 1092; https://doi.org/10.3390/w17071092 - 6 Apr 2025
Viewed by 303
Abstract
As the largest inland river in China, the Tarim River’s flood events significantly influence its riverbed formation. This paper took the Alar to Xinquman section of the Tarim River as the study area. The study area’s digital elevation model of the river was [...] Read more.
As the largest inland river in China, the Tarim River’s flood events significantly influence its riverbed formation. This paper took the Alar to Xinquman section of the Tarim River as the study area. The study area’s digital elevation model of the river was constructed using historical Google images and Copernicus DEM 30. Six different flood events were selected, corresponding to flood events with varying sediment loads, flood volumes, and peak flow volumes. The MIKE 21 software was used to simulate and investigate the response of the riverbed shape to different flood events. The experimental findings indicate that the sand content constitutes a pivotal factor in the formation of the riverbed during flood events. Flood sediment load goes through stages linked to changes in riverbed erosion and deposition. The combination of high peak flow and bed-forming flow after the peak effectively shapes the central channel’s morphology. The fourth type of flood event had the highest sediment transport coefficient Φ among the six types of floods and caused the most significant scouring effect on the riverbed under low sediment load conditions. Full article
(This article belongs to the Special Issue Flow Dynamics and Sediment Transport in Rivers and Coasts)
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