Hydraulics and Hydrodynamics in Estuaries and Coast: Analysis, Laboratory/Field Experiments and Modeling Study

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Oceans and Coastal Zones".

Deadline for manuscript submissions: closed (10 November 2022) | Viewed by 4046

Special Issue Editors


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Guest Editor
School of Engineering, University of Bradford, Bradford BD7 1DP, UK
Interests: hydraulics; coastal engineering; open-channel flows; buoyancy driven flows; CFD; river dynamics
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Guest Editor
School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
Interests: open-ended pile installation; fluid–seabed–structure interactions; offshore wind farm; discrete element simulation; pile–soil interface weakening mechanism; p–y curves
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Estuaries and coastal regions are heavily populated and well-developed areas. Future rapid population growth and urbanisation in these regions will greatly affect the environmental and water quality of these regions. Fresh river water flow carries and deposits sediment as it enters coastal seas via estuaries, while salt water intrusion in river mouths affects estuarine and coastal ecology and environments. On the coast, tidal flow, currents and waves may cause beach erosion and variation in water quality. A better understanding of the hydraulics and hydrodynamics of estuaries and coasts is therefore critical to accurately monitor the environment and water quality and predict coast evolution. The hydrodynamics in estuaries and coasts, which is affected by many factors, is very complicated, requiring a unique approach combining theoretical analysis, laboratory experiments, field observation and numerical modelling studies. As such, this Special Issue is set to bring researchers together to investigate the hydrodynamics, sediment transport and water quality of estuaries and coasts. Topics of interest include: fresh-salt water exchange in estuaries; hydraulics in estuaries and coasts; sediment transport in estuaries and coasts; beach erosion and nourishment; estuarine and coastal flooding; water quality modelling in estuaries and coasts.

Prof. Dr. Yakun Guo
Prof. Dr. Junwei Liu
Guest Editors

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Keywords

  • fresh-salt water exchange in estuaries
  • estuarine and coastal sediment transport
  • coastal and estuary flooding
  • beach erosion and nourishment
  • water quality modelling in estuaries and coasts
  • theoretical analysis
  • numerical modelling
  • physical laboratory experimental model study
  • field observations

Published Papers (2 papers)

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Research

20 pages, 7200 KiB  
Article
Effect of Local Winds on Salinity Intrusion in the Columbia River Estuary
by Isabella Scroccaro, Yvette H. Spitz and Charles M. Seaton
Water 2023, 15(2), 326; https://doi.org/10.3390/w15020326 - 12 Jan 2023
Cited by 1 | Viewed by 1924
Abstract
In the highly energetic Columbia River estuary, river discharge and tides are known as dominant factors controlling circulation. In this study, the 3D hydrodynamic unstructured-grid model SELFE is used to investigate the influence of the local wind on salinity intrusion. Numerical simulations are [...] Read more.
In the highly energetic Columbia River estuary, river discharge and tides are known as dominant factors controlling circulation. In this study, the 3D hydrodynamic unstructured-grid model SELFE is used to investigate the influence of the local wind on salinity intrusion. Numerical simulations are carried out for realistic conditions for the year 2014, with 4 km and 32 km resolution atmospheric forcing. The effect of the wind is further investigated by switching it off in the estuary. Analysis of modeled salinity intrusion length shows that the resolution of atmospheric forcing matters, and strong episodic winds occurring in winter and fall exert some control on this parameter. Energetic easterly winds tend to increase salinity intrusion length, while energetic westerly winds tend to do the reverse. Results also suggest that energetic winds can differentially alter salt intrusion in the two main channels—the north and south channels—of the estuary. These findings offer motivation for future studies to better understand these processes. Full article
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14 pages, 24717 KiB  
Article
Study on Improving the Water Quality of Drilling Mud Using Industrial Waste Residue
by Yuyue Jia, Huayang Li, Yun Meng and Nan Li
Water 2023, 15(1), 174; https://doi.org/10.3390/w15010174 - 31 Dec 2022
Viewed by 1761
Abstract
Drilling waste has a significant effect on the water quality and the aquatic environment. Therefore, the harmless solidification treatment of drilling waste mud is important in terms of protecting the water environment. However, traditional chemical solidification methods have some problems, such as wide [...] Read more.
Drilling waste has a significant effect on the water quality and the aquatic environment. Therefore, the harmless solidification treatment of drilling waste mud is important in terms of protecting the water environment. However, traditional chemical solidification methods have some problems, such as wide area, high cost, and secondary pollution. Therefore, the improvement of the mechanical performance on treating the drilling waste is important, as it can reduce and minimize the effect of drilling waste on the water environment. To this end, in this study, the industrial waste residue is used as the main component of the curing agent and a harmless curing scheme is designed. According to the orthogonal design method, an unconfined compressive strength test is carried out on the solidified soil of drilling waste mud. The strength, stress-strain relationship, and deformation modulus of the solidified soil are discussed according to the curing age, the number of freeze-thaw cycles, and the proportion of the solidifying agent. The test results show that the unconfined compressive strength of solidified soil samples under different proportions increases with the increase of the curing age and decreases with the increase of the freeze-thaw cycles. With the Increase of the curing age, the solidified soil gradually changes from plasticity to brittleness, and its deformation modulus E50 also increases gradually. Full article
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