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Selected Papers from the 8th International Conference on the Application...
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Selected Papers from the 8th International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (CoastLab2020)

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Coastal Engineering".

Deadline for manuscript submissions: closed (28 February 2021) | Viewed by 9064

Special Issue Editors

Prof. Dr. Zhiguo He

E-Mail Website
Guest Editor
1. Institute of Port, Coastal and Offshore Engineering, Ocean College, Zhejiang University, Zhoushan 316021, China
2. State Key Laboratory of Satellite Ocean Environment Dynamics (Second Institute of Oceanography, MNR), Hangzhou 310058, China
Interests: estuary and ocean dynamics; computational fluid dynamics (CFD); coastal disasters and prevention
Prof. Dr. Dezhi Ning

E-Mail Website
Guest Editor
School of Hydraulic Engineering, Dalian University of Technology, Dalian 116023, China
Interests: wave nonlinearities; wave interaction with coastal and offshore structures; wave and current interactions; freak waves and their interaction with current/wind; wave energy technology; sloshing and its mitigation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

On behalf of the CoastLab2020 Organizing Committee, it is our great pleasure to invite you to participate in the 8th International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (CoastLab2020) from the 9th to the 12th of December, 2020, in Zhoushan, China. CoastLab2020 is organized under the auspices of the International Association of Hydro-Environment Engineering and Research (IAHR). It will be jointly hosted by Zhejiang University, Dalian University of Technology, Sichuan University and Zhejiang Ocean University, and co-organized by Hohai University.

CoastLab2020 will build on the successes of previous conferences held in Porto (2006), Bari (2008), Barcelona (2010), Ghent (2012), Varna (2014), Ottawa (2016) and Santander (2018). It will provide a stimulating and enriching forum to discuss the latest developments in physical modelling applied to coastal engineering and new trends in coastal sciences.

We are excited to have the president of IAHR, Joseph H.W. Lee, joining to celebrate this conference with all of us! We are looking forward to collaborating with the Coastal and Maritime Hydraulics Committee of IAHR to host a successful CoastLab2020 in Zhoushan. This Special Issue presents a selection of papers from the conference.

Prof. Dr. Zhiguo He
Prof. Dr. Dezhi Ning
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. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly 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

  • Coastal hydrodynamics and coastal processes
  • Climate change impact, adaptation, and mitigation
  • Extreme events—assessment and mitigation
  • Laboratory techniques and measurement systems
  • Sediment transport, erosion, and sedimentation
  • Wave and tidal energy
  • Coastal and ocean structures, breakwaters, and revetments
  • Estuary and coastal environment and eco-hydraulics
  • Field measurement and monitoring
  • Ports, marine terminals, navigation, ship motions
  • Wave synthesis, generation, and analysis
  • Marine geotechnics

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Published Papers (3 papers)

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Research

9 pages, 3218 KiB  
Article
Study on the Rheological Behavior of a Model Clay Sediment
by Yuan Lin, Huaitao Qin, Jin Guo and Jiawang Chen
J. Mar. Sci. Eng. 2021, 9(1), 81; https://doi.org/10.3390/jmse9010081 - 14 Jan 2021
Cited by 13 | Viewed by 2954
Abstract
Clay sediments are the main component of seabed sediment. Interactions between the nano-sized, disk-shaped and charged clay particles are complicated, as they control the sediment’s rheology. In this study, we studied the rheological behavior of the clay sediment modeled by laponite and bentonite [...] Read more.
Clay sediments are the main component of seabed sediment. Interactions between the nano-sized, disk-shaped and charged clay particles are complicated, as they control the sediment’s rheology. In this study, we studied the rheological behavior of the clay sediment modeled by laponite and bentonite suspensions experimentally using a rotational rheometer. The yield stress decreased when water content increased. Meanwhile, the yield stress of the laponite suspension first increased and then decreased with increasing salinity. It is considered that the face-to-face repulsive electrostatic interaction between clay platelets dominated the yield behavior. A yield stress model was developed to describe the change of the yield stress with both the water content and the salinity. When the system started to flow, the viscosity decreased with increasing shear. A master curve of viscosity is was from the viscosity-stress curves at different water contents if the applied shear stress was normalized by the yield stress and the viscosity normalized by a characteristic viscosity. This study provides a preliminary understanding of the clay sediment rheology and its mechanism for the investigation on the flowing of the sediment systems with strong interparticle interaction. Full article
(This article belongs to the Special Issue Selected Papers from the 8th International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (CoastLab2020))
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20 pages, 5545 KiB  
Article
Large-Scale Laboratory Experiments on Mussel Dropper Lines in Ocean Surface Waves
by Rebekka Gieschen, Christian Schwartpaul, Jannis Landmann, Lukas Fröhling, Arndt Hildebrandt and Nils Goseberg
J. Mar. Sci. Eng. 2021, 9(1), 29; https://doi.org/10.3390/jmse9010029 - 30 Dec 2020
Cited by 6 | Viewed by 3107
Abstract
The rapid growth of marine aquaculture around the world accentuates issues of sustainability and environmental impacts of large-scale farming systems. One potential mitigation strategy is to relocate to more energetic offshore locations. However, research regarding the forces which waves and currents impose on [...] Read more.
The rapid growth of marine aquaculture around the world accentuates issues of sustainability and environmental impacts of large-scale farming systems. One potential mitigation strategy is to relocate to more energetic offshore locations. However, research regarding the forces which waves and currents impose on aquaculture structures in such conditions is still scarce. The present study aimed at extending the knowledge related to live blue mussels (Mytilus edulis), cultivated on dropper lines, by unique, large-scale laboratory experiments in the Large Wave Flume of the Coastal Research Center in Hannover, Germany. Nine-months-old live dropper lines and a surrogate of 2.0 m length each are exposed to regular waves with wave heights between 0.2 and 1.0 m and periods between 1.5 and 8.0 s. Force time histories are recorded to investigate the inertia and drag characteristics of live mussel and surrogate dropper lines. The surrogate dropper line was developed from 3D scans of blue mussel dropper lines, using the surface descriptor Abbott–Firestone Curve as quality parameter. Pull-off tests of individual mussels are conducted that reveal maximum attachment strength ranges of 0.48 to 10.55 N for mussels that had medium 3.04 cm length, 1.60 cm height and 1.25 cm width. Mean drag coefficients of CD = 3.9 were found for live blue mussel lines and CD = 3.4 for the surrogate model, for conditions of Keulegan–Carpenter number (KC) 10 to 380, using regular wave tests. Full article
(This article belongs to the Special Issue Selected Papers from the 8th International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (CoastLab2020))
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10 pages, 1452 KiB  
Article
Preliminary Results on the Dynamics of a Pile-Moored Fish Cage with Elastic Net in Currents and Waves
by Gianluca Zitti, Nico Novelli and Maurizio Brocchini
J. Mar. Sci. Eng. 2021, 9(1), 14; https://doi.org/10.3390/jmse9010014 - 24 Dec 2020
Cited by 7 | Viewed by 2097
Abstract
Over the last decades, the aquaculture sector increased significantly and constantly, moving fish-farm plants further from the coast, and exposing them to increasingly high forces due to currents and waves. The performances of cages in currents and waves have been widely studied in [...] Read more.
Over the last decades, the aquaculture sector increased significantly and constantly, moving fish-farm plants further from the coast, and exposing them to increasingly high forces due to currents and waves. The performances of cages in currents and waves have been widely studied in literature, by means of laboratory experiments and numerical models, but virtually all the research is focused on the global performances of the system, i.e., on the maximum displacement, the volume reduction or the mooring tension. In this work we propose a numerical model, derived from the net-truss model of Kristiansen and Faltinsen (2012), to study the dynamics of fish farm cages in current and waves. In this model the net is modeled with straight trusses connecting nodes, where the mass of the net is concentrated at the nodes. The deformation of the net is evaluated solving the equation of motion of the nodes, subjected to gravity, buoyancy, lift, and drag forces. With respect to the original model, the elasticity of the net is included. In this work the real size of the net is used for the computation mesh grid, this allowing the numerical model to reproduce the exact dynamics of the cage. The numerical model is used to simulate a cage with fixed rings, based on the concept of mooring the cage to the foundation of no longer functioning offshore structures. The deformations of the system subjected to currents and waves are studied. Full article
(This article belongs to the Special Issue Selected Papers from the 8th International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science (CoastLab2020))
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