A Review of the Hydroelastic Theoretical Models of Floating Porous Nets and Floaters for Offshore Aquaculture

Journal of Marine Science and Engineering, Год журнала: 2024, Номер 12(10), С. 1699 - 1699

Опубликована: Сен. 25, 2024

The present review focuses on the theoretical model developments made in floating flexible net fish cages and bodies application to offshore aquaculture. A brief discussion of essential mathematical equations related various models frequency domain is presented. single array or submerged connected with without mooring lines are discussed. Further, as combined effect hydroelastic behaviour floaters necessary assess their efficiency survivability from structural damages, issues knowledge gap between recent future also In conclusion, practical suggestions concerning advancements research directions within response elastic highlighted.

Язык: Английский

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Numerical modeling of structural body deformation under free surface flow based on volume of fluid–discrete element method coupling

Physics of Fluids, Год журнала: 2024, Номер 36(3)

Опубликована: Март 1, 2024

In this work, we proposed a numerical model based on the coupling of volume fluid–discrete element method and bond particle (BPM). The simulation bonding structural body formation process had been presented, inter-particle mechanism was introduced. We also tested dam-busting impact elastic wedge plates at high Reynolds numbers (1.26 × 107 2.16 106) compared results with simulations. show that has mean errors 3.9% 6.5% for large micro-deformations, respectively. It is in perfect agreement curve trends test keeps good convergence different sizes. addition, used to study hydrodynamic changes underwater box net structures offshore aquaculture, deformation kinematic properties nets under material strengths were evaluated. This provides effective theoretical support engineering guidance further behavior bodies action.

Язык: Английский

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Exposed Aquaculture Operations: Strategies for Safety and Fish Welfare

Reviews in Aquaculture, Год журнала: 2024, Номер 17(1)

Опубликована: Авг. 22, 2024

ABSTRACT The expansion of aquaculture production into more exposed harsh and remote ocean environments presents both new opportunities challenges. To manage the complexities operations, research fish welfare, personnel safety, facilitating technology is thus key importance. This paper reviews recent advances in areas technology, while focus on Norwegian salmon farming industry, results could benefit internationally. Regarding study summarizes current knowledge status coping abilities welfare indicators strong currents waves. On safety front, there has been significant progress operational management, accident analysis, emergency preparedness, all which are crucial for human these demanding settings. Human also rely structures equipment, include environmental load vessel design, simulations farms. Notably, development contact‐free, autonomous lifting hole detection methods represents a leap maintaining infrastructure. multidisciplinary underscores need integrated approaches to address aquaculture, emphasizing that innovations have enhanced robustness, ongoing strategies critical operations.

Язык: Английский

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Mapping the potential for offshore aquaculture of salmonids in the Yellow Sea

Marine Life Science & Technology, Год журнала: 2022, Номер 4(3), С. 329 - 342

Опубликована: Авг. 18, 2022

Mariculture has been one of the fastest-growing global food production sectors over past three decades. With congestion space and deterioration environment in coastal regions, offshore aquaculture gained increasing attention. Atlantic salmon (

Язык: Английский

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Advancements and hurdles of deeper‐offshore aquaculture in China

Reviews in Aquaculture, Год журнала: 2023, Номер 16(2), С. 644 - 655

Опубликована: Сен. 5, 2023

Abstract Open offshore areas boast strong physical self‐purification capacity and abundant non‐fossil energy resources, such as wind, waves, solar energy. Consequently, the global community anticipates nearshore aquaculture to transition towards help increase production, alleviate eutrophication, reduce greenhouse gas emissions. To date, China has constructed over 40 sets of deeper‐offshore (DOA) infrastructures, encompassing various types pens, cages closed containment systems. Although DOA holds vast potential address food security sustainability in China, its current development trajectory struggles meet those goals primarily achieves profitability by focusing on high‐value species or products. For realize potential, innovative production systems must tackle three key contradictions: enterprise versus product affordability, clean energy‐based products carbon‐intensive products, automated operation re‐employment coastal fish farmers. Resolving these contradictions requires a large‐scale, anti‐typhoon enclosure that integrates mariculture with other industries, wind farming, processing, tourism. This approach will foster sustainable balance between profitability, environmental impact, employment opportunities sector.

Язык: Английский

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Utilisation of the site assessment energy indices for aquaculture in exposed waters: biology, technology, operations and maintenance

Frontiers in Aquaculture, Год журнала: 2024, Номер 3

Опубликована: Авг. 26, 2024

When moving from a very sheltered aquaculture site to exposed oceanic site, the energy increases proportionally in continuum. Lojek et al. (in review) considered primary influential parameters (water current, wave height, period, wavelength and water depth) which influence species, structure, technology, methods, operational aspects of any endeavour investigated six possible indices cover these variables. Added advanced computer modelling, assisted by detailed constant environmental monitoring, it may be refine selection, structure selection design, species equipment logistic requirements health safety requirements. This manuscript has selected two indicative indices: Specific Exposure Energy (SEE) index Velocity (EV) potential equations provided compared them with known sites highlighting present structural capability limitations. The are also utilized reflect on their suitability for assessing sample respect biological, technological, or maintenance activities. have shown themselves useful tools general assessment that will at sites. information can help prospective fish farmers characterize concisely accurately consultants, regulators, vendors, insurance brokers.

Язык: Английский

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A synthesis review of nature positive approaches and coexistence in the offshore wind industry

ICES Journal of Marine Science, Год журнала: 2023, Номер unknown

Опубликована: Дек. 5, 2023

Abstract Offshore wind is one of the major fast-growing renewable energy industries, and sustainable implementation offshore farms (OWF) desired. Nature positive approaches have been proposed to promote biodiversity gain improve ecosystem resilience. At same time, coexistence has considered a way mitigate race for ocean space better integrate development OWF industry. Here, we provide systematic narrative synthesis review on nature in OWFs. We observed an increased interest topics over last 5 years, with most documents coming from northern hemisphere, particular Europe North Sea. Literature mostly related bottom-fixed turbines, relatively fewer available regarding floating wind, which nascent There lack long-term situ assessments impact approaches. Whilst there are various impacts OWFs, literature highlights artificial reef effect protection (diversity abundance) ecological economically relevant groups. Coexistence strategies OWF, such as fisheries, aquaculture, marine-protected areas, bring negative outcomes environment, further investigation their integration should be explored.

Язык: Английский

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Aquaculture’s offshore frontier: learning from the Canadian courts on ocean grabbing, ocean privatization, and property as process

MAST. Maritime studies/Maritime studies, Год журнала: 2024, Номер 23(1)

Опубликована: Янв. 13, 2024

Abstract Many coastal nations have endorsed the Blue Economy as both an economic and environmental opportunity, despite numerous questions to how industrial expansion into deep ocean waters might be regulated for sustainability. Aquaculture is one industry actively promoting a move offshore, with offshore leases in development. Drawing on history of aquaculture nearshore, relying processual approach property, we explore around regulation privatized spaces: What can court cases involving nearshore tell us about role law sustainable spaces? And what turn does this suggest extractive capitalism, privatization spaces, law? We examine 46 Canadian which cover 30-year time frame multiple jurisdictions. argue that there are lessons here regarding questionable ability effectively regulate existing or future operations once emerges. The from these cases, taken together burgeoning literature legal geography, more-than-human methodologies, critical law, varied dimensions deep-sea frontier imaginaries highlight real limits regulating extraction resources perceived open space (terra nullius). crucial barriers sustainability through calling jurisdictional opaqueness regulatory issues. results include poor overlapping contested jurisdictions, relates inadequate consultation, frequent problems (toxic chemicals, anoxia, salmon escapes, marine debris), scientific disputes.

Язык: Английский

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The social science of offshore aquaculture: uncertainties, challenges and solution-oriented governance needs

Frontiers in Aquaculture, Год журнала: 2024, Номер 3

Опубликована: Сен. 3, 2024

Aquaculture technology is on the move, enabling production in more open and exposed ocean environments around world. These new systems offer solutions to environmental challenges facing conventional aquaculture, yet technologies also create social while potentially exacerbating, or at minimum recreating, others. Offshore aquaculture research governance are still early stages, as our understanding of repercussions associated with development. This paper provides an evaluation reflection offshore from a science perspective based findings modified World Café group discussion method including thoughts experiences experts. Key uncertainties lack appropriate regulatory framework, societal perceptions aquaculture’s contribution society were identified. The implications these discussed well need for sciences address through transformative transdisciplinary approaches that bridge society.

Язык: Английский

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Risk Assessment of Harmful Algal Blooms in Salmon Farming: Scotland as a Case Study

Toxins, Год журнала: 2025, Номер 17(1), С. 35 - 35

Опубликована: Янв. 13, 2025

This study explored harmful algal bloom (HAB) risk as a function of exposure, hazard and vulnerability, using Scotland case study. Exposure was defined the fish biomass estimated to be lost from event, based on total recorded annual production. Hazard literature-reported events. Vulnerability calculated records number employees (2020), an estimate aquaculture-based employment. The dinoflagellate Karenia mikimotoi identified HAB species with highest frequency reported events in Scotland, variable spatial temporal reports, but environmental climatological variables regulating these are currently unknown. Shetland Islands region exhibited combined risk, scores all three components. particularly important overall within island setting, where larger proportion population dependent aquaculture. analysis demonstrated potential evaluate economic social consequences aquaculture industry. As fish-killing HABs health impacts likely under-reported, more transparent reporting related physiological is recommended for quantitative application this approach.

Язык: Английский

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