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Water
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Estuarine and Coastal Hydrodynamics
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Estuarine and Coastal Hydrodynamics

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

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 3713

Special Issue Editor

Prof. Dr. Kim Dan Nguyen

E-Mail Website
Guest Editor
Laboratory for Hydraulics Saint-Venant, Université Paris-Est. Chatou, France
Interests: mechanics of geophysical fluids; numerical modelling; coastal and estuarine flows; monophasic and diphasic sedimentary transport

Special Issue Information

Dear Colleagues,

Estuarine and coastal zones play an active role in the interaction between continents and oceans. In these zones, several hydrodynamic processes exist and interfere with each other: the penetration of fresh water into salt water and vice versa, engendering density-induced currents; tidal propagation; wind-driven waves that generate longshore and offshore currents; sediment transport; coastal erosion; and accretion. The interaction between these processes is extremely complex, and climate change has heightened it in recent years. Besides obeying general physical laws, the above processes also depend on indigenous conditions, including the geometric shape of the studied zone, its topography, and its relation to the surrounding environment.

Social–economic developments in the estuarine and coastal zones require thorough hydrodynamics research for different natural and indigenous conditions, targeting integrated management in these zones.

The aim of this Special Issue is to collect and share innovative ideas and the most recent findings of hydrodynamic research in estuarine and coastal zones. We invite authors to publish original research articles, review articles, and short communications on relevant topics.

Special Issue Topics

-           Saline intrusion and sea level rise: measurements, modelling and forecasting their impacts to economic development and human lives;

-           Waves and tsunami: measurements, modelling, forecasting and warning system;

-           Estuarine and coastal flows and their evolution by climate change;

-           Sediment transport and morphological change in estuaries and coastal zones;

-           Megacity development and coastal floods under the threat of sea level rise and climate change: observation, modelling, forecasting and early warning systems;

-           Environment and ecosystem change in estuaries and coastal zones in time of global change;

-           Integrated coastal zone management for sustainable development in a global change context.

Prof. Dr. Kim Dan Nguyen
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

  • density-induced currents
  • stratified flows
  • wave propagation
  • wave-driven currents
  • global change and sea level rise
  • numerical and physical modelling
  • in situ hydrodynamics measurements
  • coastal erosion and accretion
  • solutions for protecting coastlines from erosion

Published Papers (3 papers)

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Research

27 pages, 7485 KiB  
Article
A Three-Dimensional Fully-Coupled Fluid-Structure Model for Tsunami Loading on Coastal Bridges
by Dilshan S. P. Amarasinghe Baragamage and Weiming Wu
Water 2024, 16(1), 189; https://doi.org/10.3390/w16010189 - 04 Jan 2024
Viewed by 984
Abstract
A three-dimensional (3D) fully-coupled fluid-structure model has been developed in this study to calculate the impact force of tsunamis on a flexible structure considering fluid-structure interactions. The propagation of a tsunami is simulated by solving the 3D Navier–Stokes equations using a finite volume [...] Read more.
A three-dimensional (3D) fully-coupled fluid-structure model has been developed in this study to calculate the impact force of tsunamis on a flexible structure considering fluid-structure interactions. The propagation of a tsunami is simulated by solving the 3D Navier–Stokes equations using a finite volume method with the volume-of-fluid technique. The structure motion under the tsunami impact force is simulated by solving the motion equation using the generalized alpha method. The structure motion is fed back into the fluid solver via a technique that combines a sharp-interface immersed boundary method with the cut-cell method. The flow model predicts accurate impact forces of dam-break flows on rigid blocks in three experimental cases. The fully coupled 3D flow-structure model is tested with experiments on a large-scale (1:5) model bridge under nonbreaking and breaking solitary waves. The simulated wave propagation and structure restoring forces generally agree well with the measured data. Then, the fully-coupled fluid-structure model is compared with an uncoupled model and applied to assess the effect of flexibility on structure responses to tsunami loading, showing that the restoring force highly depends on the dynamic characteristics of the structure and the feedback coupling between fluid and structure. The maximum hydrodynamic and restoring forces decrease with increasing structure flexibility. Full article
(This article belongs to the Special Issue Estuarine and Coastal Hydrodynamics)
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24 pages, 6776 KiB  
Article
A 3D Numerical Study on the Tidal Asymmetry, Residual Circulation and Saline Intrusion in the Gironde Estuary (France)
by Damien Pham Van Bang, Ngoc Vinh Phan, Sylvain Guillou and Kim Dan Nguyen
Water 2023, 15(23), 4042; https://doi.org/10.3390/w15234042 - 22 Nov 2023
Viewed by 746
Abstract
A full 3D numerical model is used for studying tidal asymmetry, estuarine circulation, and saline intrusion in the Gironde estuary. The model is calibrated and verified using the data measured during two field surveys in the Gironde estuary. Harmonic analysis of numerical results [...] Read more.
A full 3D numerical model is used for studying tidal asymmetry, estuarine circulation, and saline intrusion in the Gironde estuary. The model is calibrated and verified using the data measured during two field surveys in the Gironde estuary. Harmonic analysis of numerical results is proposed to understand how the superposition of M2, M4 and M6 components generate a complex estuarine circulation and salinity intrusion in the Gironde estuary. The numerical results show that the M6 component plays a significant role as important as the M4 one in modifying the nature of tidal asymmetry, especially in the Gironde upper estuary. In this case, the use of the phase lag between M2 and M4, neglecting M6, to predict the tidal asymmetry nature could produce errors. The effect of asymmetrical tides on saline intrusion and residual circulation is specifically discussed here. Full article
(This article belongs to the Special Issue Estuarine and Coastal Hydrodynamics)
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20 pages, 13612 KiB  
Article
A Laboratory Scale of the Physical Model for Inclined and Porous Breakwaters on the Coastline of Soc Trang Province (Mekong Delta)
by Chuong Thanh Le, Duong Van Do, Duong Binh Nguyen and Ping Wang
Water 2023, 15(7), 1366; https://doi.org/10.3390/w15071366 - 01 Apr 2023
Cited by 1 | Viewed by 1398
Abstract
In the last few decades, the Mekong Delta coastlines have suffered serious erosion. Strong waves during the Northeast Monsoon are one of the main reasons for this. Many types of breakwaters with different structural components have been designed and built to mitigate coastline [...] Read more.
In the last few decades, the Mekong Delta coastlines have suffered serious erosion. Strong waves during the Northeast Monsoon are one of the main reasons for this. Many types of breakwaters with different structural components have been designed and built to mitigate coastline erosion. Vertical seawalls have been widely used, but they create reflection waves, which can generate water particle kinematics in front of the structure and increase the toe scour. In this study, an innovative block of inclined and porous breakwaters was studied by conducting laboratory-scale experiments. The experimental results show that inclined and porous breakwaters can considerably reduce wave energy due to transmission, reflection, and diffraction compared to inclined breakwaters. The porosity on the front and back sides of the structures has also been studied. Letting sediment-laden seawaters penetrate inside the sheltered zones, porous breakwaters promote accretion and facilitate the forestation of mangrove belts. Full article
(This article belongs to the Special Issue Estuarine and Coastal Hydrodynamics)
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