Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
3.7
2.9
Journals
JMSE
Special Issues
Advances in Offshore Aquaculture and Renewable Energy Production
share announcement

Advances in Offshore Aquaculture and Renewable Energy Production

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: 30 April 2024 | Viewed by 9259

Special Issue Editors

Dr. Huu Phu Nguyen

E-Mail Website
Guest Editor
School of Civil Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
Interests: hydroelastic analysis; very large floating structures; wave energy converters; seaweed cultivation infrastructure
Prof. Dr. Chien Ming Wang

E-Mail Website
Guest Editor
School of Civil Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
Interests: offshore floating fish farms; infrastructure for offshore seaweed farms; development of new structural models for analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Offshore aquaculture and renewable energy production have recently received much attention due to the growing demand to scale-up production. For aquaculture, offshore sites provide large water columns, better water quality and better dispersal of fish wastes. With respect to renewable energy production, offshore sites provide stronger winds, waves, currents and a large space to harvest wind energy, wave energy, tidal current energy and solar energy. However, the long distance between offshore sites and shorelines and the energetic environmental conditions pose challenges in designing safe and cost-effective infrastructure. These challenges have spurred enormous and exciting research and developments in offshore aquaculture and renewable energy production in recent years. This Special Issue of the Journal of Marine Science and Engineering aims to publish the most recent advances in the design, modelling and analysis of infrastructure for offshore aquaculture and renewable energy production in a single volume. The journal will offer a rapid turn-around time regarding reviewing and publishing, and will publish papers open access for research, teaching and reference purposes.

Research/review papers and case studies on the following topics are encouraged:

  • Modelling, analysis and design of infrastructure for offshore aquaculture (e.g., fish farming and seaweed cultivation);
  • Modelling, analysis and design of infrastructure for offshore renewable energy production and storage (e.g., wind, solar, wave, tidal current, OTEC, green hydrogen);
  • Co-location and integration of offshore renewable energy and aquaculture farms.

The abovementioned infrastructure includes platforms, cage nets, mooring systems, energy storage systems, supporting service vessels, autonomous systems, and digital twins.

The article processing charge will be waived or discounted for the most interesting papers selected by the Guest Editors.

Dr. Huu Phu Nguyen
Prof. Dr. Chien Ming 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. 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

  • offshore renewable energy
  • offshore aquaculture seaweed cultivation
  • fish farming
  • fluid–structure interaction

Published Papers (6 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review, Other

13 pages, 1676 KiB  
Article
Uncertainty Assessment of the Remaining Volume of an Offshore Gravity Fish Cage
by Zhongchi Liu and C. Guedes Soares
J. Mar. Sci. Eng. 2024, 12(2), 289; https://doi.org/10.3390/jmse12020289 - 05 Feb 2024
Viewed by 562
Abstract
The volume of a gravity cage is greatly reduced under a current due to the flexible structure, which affects the growth and health of the fish. Thus, an accurate assessment of cage volume is essential to determine the number of fishes in the [...] Read more.
The volume of a gravity cage is greatly reduced under a current due to the flexible structure, which affects the growth and health of the fish. Thus, an accurate assessment of cage volume is essential to determine the number of fishes in the cage. In this study, firstly, a numerical model was built to study the cage volume reduction of gravity cages due to the flexible net deformation when subjected to uniform flow. The remaining volume was calculated and compared with earlier experiments. Even though the flow velocity reductions were considered according to the data from previous experiments, the differences between the results from the numerical calculation and the towing tests are still significant. The physical model tests were treated as the reference value to investigate the uncertainty of the model results. Both the velocity-independent model error and velocity-dependent model error were calculated. With the help of the error models, the uncertainty of the remaining volume can be predicted. In addition, the velocity-dependent model error performs better in evaluating the uncertainty of the numerical calculation of the remaining culturing volume. Overall, the results show that the numerical model assisted by the model errors can calculate the cage volume accurately. Full article
(This article belongs to the Special Issue Advances in Offshore Aquaculture and Renewable Energy Production)
►▼ Show Figures

Figure 1

17 pages, 6491 KiB  
Article
Hydroelastic Responses of a Submersible Ring Structure for Offshore Seaweed Cultivation under Wave Action
by Huu Phu Nguyen, Chien Ming Wang, Brian von Herzen and Chenxuan Huang
J. Mar. Sci. Eng. 2023, 11(12), 2238; https://doi.org/10.3390/jmse11122238 - 27 Nov 2023
Viewed by 854
Abstract
This paper investigates the hydroelastic response of a submersible circular ring structure, designed for offshore seaweed cultivation, under wave action and during the submergence process. The ring structure comprises two circular HDPE pipes connected to each other by equally spaced brackets. The structure [...] Read more.
This paper investigates the hydroelastic response of a submersible circular ring structure, designed for offshore seaweed cultivation, under wave action and during the submergence process. The ring structure comprises two circular HDPE pipes connected to each other by equally spaced brackets. The structure carries seaweed grow-out lines, and is kept in position by a mooring-line system used for fish pens. The HDPE collar is equipped with multiple inlet and outlet valves, allowing it to be submerged to avoid strong waves and to be raised to the water surface when the strong waves die down. The software AquaSim was used for the hydroelastic analysis of the moored structure. It is found that we can significantly reduce the von Mises stresses in the ring structure as well as the mooring-line forces by submerging. However, the structure can experience significant increase in stress during the submergence process due to bending from combined wave action and non-uniform distribution of filled water in the ring structure. This stress increase may cause structural damage or even failure. Therefore, it is important to submerge the ring structure in calm waves ahead of predicted storms and to control the distribution of seawater into the ring structure. For the latter, it is best to use at least two inlet valves and two outlet valves to minimize the likelihood of damage of the ring structure during the submergence process. Full article
(This article belongs to the Special Issue Advances in Offshore Aquaculture and Renewable Energy Production)
►▼ Show Figures

Figure 1

24 pages, 1179 KiB  
Article
Investigating a Renewable-Resource-Targeting Mobile Aquaculture System Using Route Optimization Based on Optimal Foraging Theory
by Jeff Grasberger and Dominic Forbush
J. Mar. Sci. Eng. 2023, 11(11), 2123; https://doi.org/10.3390/jmse11112123 - 07 Nov 2023
Viewed by 742
Abstract
Aquaculture systems require careful consideration of location, which determines water conditions, pollution impacts, and hazardous conditions. Mobility may be able to address these factors while also supporting the targeting of renewable energy sources such as wind, wave, and solar power throughout the year. [...] Read more.
Aquaculture systems require careful consideration of location, which determines water conditions, pollution impacts, and hazardous conditions. Mobility may be able to address these factors while also supporting the targeting of renewable energy sources such as wind, wave, and solar power throughout the year. In this paper, a purpose-built mobile aquaculture ship is identified and modeled with a combination of renewable energy harvesting capabilities as a case study with the objective of assessing the potential benefits of targeting high renewable energy potentials to power aquaculture operations. A route optimization algorithm is created and tuned to simulate the mobility of the aquaculture platform and cost-basis comparisons are made to a stationary system. The small spatial variability in renewable energy potential when combining multiple resources significantly limits the benefits of a mobile, renewable-targeting aquaculture system. On the other hand, the consistent energy harvest from a blend of renewable energy types (13 kW installed wind capacity, 661 m2 installed solar, and 1 m characteristic width wave-energy converter) suggests that the potential benefits of a mobile platform for offshore aquaculture (mitigation of environmental and social concerns, any potential positive impact on yields, hazard avoidance, etc.) can likely be pursued without significant increases in energy harvester costs. Full article
(This article belongs to the Special Issue Advances in Offshore Aquaculture and Renewable Energy Production)
►▼ Show Figures

Figure 1

19 pages, 6857 KiB  
Article
Effects of Inclination Angles on the Hydrodynamics of Knotless Net Panels in Currents
by Gang Wang, Yong Cui, Changtao Guan, Pihai Gong and Rong Wan
J. Mar. Sci. Eng. 2023, 11(6), 1148; https://doi.org/10.3390/jmse11061148 - 30 May 2023
Cited by 2 | Viewed by 1014
Abstract
Knotless nets have been extensively used in sea cages and offshore fish farms; the explicit illustrations of local flow patterns and subjected hydrodynamic loads have practical implications for the safe operations of aquaculture pens in open oceans. However, the effects of inclination angles [...] Read more.
Knotless nets have been extensively used in sea cages and offshore fish farms; the explicit illustrations of local flow patterns and subjected hydrodynamic loads have practical implications for the safe operations of aquaculture pens in open oceans. However, the effects of inclination angles of knotless nets on local flow patterns have not yet been fully discussed. In this paper, the effects of inclination angles on local time-averaged and instantaneous flow fields, velocity reductions and force coefficients are investigated using a k-ω shear stress transport-improved delayed detached eddy simulation (SST-IDDES) high-fidelity turbulence model. It is demonstrated that the inclination angles have dominant effects on the time-averaged velocity magnitudes around the net meshes. Secondly, the considerable flow interactions amongst the transverse and longitudinal net meshes, as well as cross-flow effects, are observed but weakened with the inclination angles. Thirdly, the profiles of velocity decelerations behind the net panels for 0∘–45∘ are not as trivial as those for 45∘–90∘. The associations between the embedded mechanism of subjected loads and pressure fields are established to analyse the current loads on nets in small inclination angles. The inclination angles are finally elaborated into the area-averaged velocity reduction and screen force models, then the improved characteristics are validated against the experimental data. Full article
(This article belongs to the Special Issue Advances in Offshore Aquaculture and Renewable Energy Production)
►▼ Show Figures

Figure 1

Review

Jump to: Research, Other

29 pages, 1202 KiB  
Review
Offshore Fish Farms: A Review of Standards and Guidelines for Design and Analysis
by Yun-Il Chu, Chien-Ming Wang, Hong Zhang, Nagi Abdussamie, Hassan Karampour, Dong-Sheng Jeng, Joerg Baumeister and Per Arild Aland
J. Mar. Sci. Eng. 2023, 11(4), 762; https://doi.org/10.3390/jmse11040762 - 31 Mar 2023
Cited by 2 | Viewed by 3287
Abstract
While moving fish farms to offshore sites can be a more sustainable way to expand farmed fish production, the fish pens have to contend with a harsher environment. Thus, it is necessary to draw on offshore engineering competences for designing and analysing the [...] Read more.
While moving fish farms to offshore sites can be a more sustainable way to expand farmed fish production, the fish pens have to contend with a harsher environment. Thus, it is necessary to draw on offshore engineering competences for designing and analysing the offshore fish farming infrastructure. This paper reviews existing design and analysis guidance from maritime classification and national/international authorities that can be applicable for offshore fish farms. Based on the existing design guidelines, a review of design criteria for offshore fish farms under the following subtopics is provided: design life, design environmental loads, combining environmental loads, and miscellaneous load conditions. This review on the global performance analysis procedures and methods is presented based on practices used for neighbouring industries, such as offshore oil and gas and wind energy production, under the following subtopics: hydrostatic analysis, hydrodynamic analysis, and mooring system analysis with introducing theoretical background and modelling techniques. This paper also highlights limitations and cautions when using these design and analysis methods. Providing this comprehensive information, as well as commentary on their applications, will help engineers and designers to develop offshore fish farming infrastructure with confidence. Full article
(This article belongs to the Special Issue Advances in Offshore Aquaculture and Renewable Energy Production)
►▼ Show Figures

Figure 1

Other

Jump to: Research, Review

17 pages, 4578 KiB  
Concept Paper
SeaFisher—A Submersible High-Density Polyethylene Offshore Fish Pen
by Chien-Ming Wang, Yun-Il Chu, Joerg Baumeister, Hong Zhang, Yi-Ping Qiao, Hassan Karampour, Dong-Sheng Jeng and Leigh Savage
J. Mar. Sci. Eng. 2023, 11(9), 1795; https://doi.org/10.3390/jmse11091795 - 14 Sep 2023
Cited by 1 | Viewed by 1640
Abstract
Moving offshore for fish farming poses challenges due to the more energetic sea environment. In this paper, a novel offshore fish pen design named SeaFisher has been proposed. The SeaFisher comprises modular cubic pens that are assembled to form a large 2 × [...] Read more.
Moving offshore for fish farming poses challenges due to the more energetic sea environment. In this paper, a novel offshore fish pen design named SeaFisher has been proposed. The SeaFisher comprises modular cubic pens that are assembled to form a large 2 × n array offshore fish pen. Its frame structure is made from HDPE, making it flexible and durable against the harsh sea environment. Specially tailored connection brackets and connector pods are designed to assemble bundles of HDPE pipes forming the SeaFisher structure. The SeaFisher is moored using a single point mooring to minimize environmental and collision loads, and for improved waste dispersal. More importantly, the SeaFisher possesses ballast tubes positioned on the top surface to allow it to submerge to a desired water depth to dodge the strong surface waves during severe weather events. This paper presents the engineering design details and hydroelastic analysis of the SeaFisher. Based on a hydrostatic analysis, suitable materials were chosen for the various components of the SeaFisher, and the components were appropriately sized up. By using the software AquaSim v.2.17.3, the SeaFisher’s hydroelastic responses under different sea-state conditions were investigated. It is found that the designed SeaFisher structure and mooring system are adequate with respect to strength and stiffness for the considered sea-state conditions of up to 8 m significant wave height and 0.8 m/s current speed. It is expected that the SeaFisher will be a game changer for offshore fish farming due to its cost-effectiveness and ability to survive in severe storms. Full article
(This article belongs to the Special Issue Advances in Offshore Aquaculture and Renewable Energy Production)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-6
Back to TopTop