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Recent Advancements in Sustainable Sea Space Utilisation via Floating Solutions
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Recent Advancements in Sustainable Sea Space Utilisation via Floating Solutions

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

Deadline for manuscript submissions: closed (25 November 2023) | Viewed by 11015

Special Issue Editors

Dr. Zhi Yung Tay

E-Mail Website
Guest Editor
Engineering Cluster, Singapore Institute of Technology, 10 Dover Drive, Singapore 138683, Singapore
Interests: wave energy; hydrodynamics; floating structure
Dr. Ling Wan

E-Mail Website
Guest Editor
Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Interests: offshore wind turbines; offshore renewables; very large floating structures; multi-purpose floating structures; design and analysis of marine structures

Special Issue Information

Dear Colleagues,

For centuries, the world’s oceans and seas have supported human civilization as a source of food, trade, transportation, and energy, providing connectivity to the rest of the world. The growth of urbanization and human population coupled with potential rises in seawater levels due to climate change have encouraged various applications of floating solutions to be proposed as sustainable means of sea space utilization.

This Special Issue, ‘Recent Advancements in Sustainable Sea Space Utilisation via Floating Solutions’, invites research works that focus on the sustainable utilization of ocean and sea space using floating solutions, such as cultivating food via offshore aquaculture, coastal protection via floating breakwater, energy generation via marine/wind/solar energy, connectivity via floating bridges, and other innovative and sustainable floating solution concepts that could support human livelihoods while preserving our oceans. This Special Issue welcomes manuscripts on the following topics in order to advance our understanding of recent developments in sustainable ocean space utilization:

  • Numerical modelling for floating structures (hydrodynamics, hydroelasticity, seakeeping, stability, structural analysis);
  • Mooring system designs and analysis of floating solutions;
  • Engineering modelling of floating structures (performance of wave energy convertors, motion of floating offshore wind turbines, anti-motion devices for floating solutions, performance of floating breakwater);
  • Connector designs for floating solutions;
  • Wave climate assessment for floating solutions (extreme weather, climate change scenarios);
  • Experimental tests and site measurements;
  • Installation, operation and maintenance of floating solutions;
  • Multi-purpose floating solutions (integration of WEC and FOWT, WEC and breakwater, WEC and oil platforms, floating infrastructure and coastal protection systems);
  • Digital solutions for floating structures (structural health monitoring, efficient drone monitoring, digital twins).

We look forward to receiving your contributions.

Dr. Zhi Yung Tay
Dr. Ling Wan
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

  • hydrodynamics
  • hydroelastic
  • fluid–structure interaction
  • offshore structure
  • very large floating structure
  • marine energy
  • offshore wind turbine
  • aquaculture
  • breakwater

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Published Papers (3 papers)

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Research

25 pages, 10319 KiB  
Article
Stability Analysis and Environmental Influence Evaluation on a Hybrid Mooring System for a Floating Offshore Wind Turbine
by Tzu-Hsun Lin and Ray-Yeng Yang
J. Mar. Sci. Eng. 2023, 11(12), 2236; https://doi.org/10.3390/jmse11122236 - 26 Nov 2023
Cited by 4 | Viewed by 2850
Abstract
Floating offshore wind turbines (FOWTs) are one of the innovative solutions to achieve net-zero emissions. Given that Taiwan has abundant wind power resources in its western waters and wind farms are evaluated as potential sites, a strategic emphasis on the extensive expansion of [...] Read more.
Floating offshore wind turbines (FOWTs) are one of the innovative solutions to achieve net-zero emissions. Given that Taiwan has abundant wind power resources in its western waters and wind farms are evaluated as potential sites, a strategic emphasis on the extensive expansion of wind power is imperative. This paper chooses four different designs of hybrid mooring systems, comparing them with the conventional pure chain mooring arrangement in shallow water regions in Taiwan through integrated numerical simulations, ANSYS AQWA, and Orcina OrcaFlex. The use of synthetic fiber ropes in hybrid moorings provides substantial economic and operational advantages, making them the preferred alternative to traditional chains in deepwater offshore renewable energy (ORE) mooring configurations. Hybrid mooring enables the FOWT to survive in extreme sea conditions and is presented as the ultimate limit state (ULS) and fatigue limit state (FLS). In addition, hybrid mooring not only reduces mooring line costs but also minimizes the footprint area on the seabed, enhancing economic competitiveness and optimizing marine space utilization. However, it increases the entanglement risk that may pose a potential threat to marine mammals. Building on prior research, this paper proposes a unique approach to calculate the mooring line swept volume, which is essential for entanglement assessment and marine spatial planning. Full article
(This article belongs to the Special Issue Recent Advancements in Sustainable Sea Space Utilisation via Floating Solutions)
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25 pages, 27767 KiB  
Article
Three-Dimensional Hydroelasticity of Multi-Connected Modular Offshore Floating Solar Photovoltaic Farm
by Zhi Yung Tay
J. Mar. Sci. Eng. 2023, 11(10), 1968; https://doi.org/10.3390/jmse11101968 - 11 Oct 2023
Cited by 10 | Viewed by 2118
Abstract
This paper investigates the hydroelastic responses of offshore floating solar photovoltaic farms (OFPVs). OFPVs usually occupy a large sea space in the order of hectares and structural deformation under wave action has to be taken into consideration due to their huge structural length-to-thickness [...] Read more.
This paper investigates the hydroelastic responses of offshore floating solar photovoltaic farms (OFPVs). OFPVs usually occupy a large sea space in the order of hectares and structural deformation under wave action has to be taken into consideration due to their huge structural length-to-thickness ratio. The flexible deformation of the structure under hydrodynamic loading is termed the hydroelastic response. In the hydroelastic analysis of an OFPV, the diffraction and radiation of waves have to be taken into account to accurately represent the hydrodynamic loadings on the floating platform. In this study, the numerical model is first validated by comparing the eigenvalues and eigenvectors of an OFPV, obtained from the proposed numerical scheme, with their counterparts obtained from an established finite element software. This is followed by an investigation of the hydroelastic responses of various OFPVs designed in varying layout configurations. The various layout configurations are obtained by altering the floating modular units’ dimensions as well as the spacing of the OFPVs when deployed adjacent to each other. The optimal configuration that gives the best performance in terms of the overall smallest response, known as compliance, is then suggested. The results suggest that a long-ish OFPV layout has a lower hydroelastic response and that the motion could be further reduced by rearranging the layout arrangement to increase the global flexural stiffness. Full article
(This article belongs to the Special Issue Recent Advancements in Sustainable Sea Space Utilisation via Floating Solutions)
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21 pages, 16102 KiB  
Article
Design Considerations on Semi-Submersible Columns, Bracings and Pontoons for Floating Wind
by Glib Ivanov, I-Jen Hsu and Kai-Tung Ma
J. Mar. Sci. Eng. 2023, 11(9), 1663; https://doi.org/10.3390/jmse11091663 - 24 Aug 2023
Cited by 6 | Viewed by 5257
Abstract
Floating offshore wind turbine (FOWT) is an innovative technology with little industry guidance for its hull design. Various FOWT floaters with different hull shapes claim to support the same turbines. Structural integrity and material expense analyses of different pontoon shapes were conducted, and [...] Read more.
Floating offshore wind turbine (FOWT) is an innovative technology with little industry guidance for its hull design. Various FOWT floaters with different hull shapes claim to support the same turbines. Structural integrity and material expense analyses of different pontoon shapes were conducted, and it was found that some configurations, such as those with every two columns connected by both pontoon and bracing, have advantages over others. However, it is important to note that the choice of pontoon shape should be based on the wave loading conditions the floater will be exposed to. While a T-shaped pontoon provides a cost-effective solution under certain wave loading scenarios, it may not be the best option for all conditions. Specifically, ring pontoon designs with full bracing were found to be necessary for withstanding certain wave loads. Therefore, it is important to consider different Dominant Load Parameters (DLP) and ensure that a FOWT floater can withstand all applicable DLPs. An uneven hexahedral column shape, which combines the best attributes of square and round shapes, is proposed as a better alternative to cylindrical columns. It offers ease of manufacture and reasonably low drag. Bracing is found to be necessary for withstanding the wind turbine’s incurred moment and forces. The conclusion is that platform design should prioritize manufacturing costs and strength over maximizing hydrodynamic performance. Full article
(This article belongs to the Special Issue Recent Advancements in Sustainable Sea Space Utilisation via Floating Solutions)
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