Comparative study of five commonly used gravity type fish cages under pure current conditions

Cheng, Hui; Lin, Li; Ong, Muk Chen

doi:10.1016/j.oceaneng.2022.110977

Cited by 15 publications

(5 citation statements)

References 53 publications

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Section: Citation and Keyword Analysismentioning

confidence: 99%

“…Cluster #0 consists of studies related to the cages where Cheng et al [56] proposed how to choose the type of fish cage as well as practical guidance for cage construction by using parametric research of five commonly used fish cages that take five circumferences By analyzing the keywords in VOSviewer it is possible to see the interactions and amount of the most common keywords with co-occurrence analysis where the relatedness of items is determined based on the number of documents in which they occur together (Figure 10). The keyword "aquaculture" is the biggest cluster, followed by "environment" (grey cluster), "fish cage" (blue cluster), "mariculture", and others.…”

Section: Citation and Keyword Analysismentioning

confidence: 99%

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Extended Bibliometric Review of Technical Challenges in Mariculture Production and Research Hotspot Analysis

et al. 2023

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The growth in population and the higher need for aquatic products make the aquaculture industry the world’s fastest-growing food industry. With its rapid development, production is facing various challenges to achieve sustainability and cost-effectiveness. Some obstacles in production are related to the design of mariculture cages, automatization, location of the farm, biofouling, feeding, waste management, and others. This paper deals with the extended bibliometric analysis of technical problems in mariculture based on keywords, citations, journals, and other factors by means of scientometric software, CiteSpace, and VOSviewer. Important keywords related to aquaculture and mariculture were obtained from the Web of Science platform and further analyzed by means of the mentioned scientometric software offering knowledge domain visualization and construction of knowledge maps. Apart from the identification of research topics of the highest importance, research hotspots are characterized as follows: technical, biological, digital, and environmental. The most cited articles are related to the environmental problems and solutions in marine aquaculture and the study of biofouling and how to control it. Other important documents with high citation rates are related to the cages, offshore mariculture, location conditions, and sustainability. This study recognizes trends by combining aquaculture production with floating structures for energy extraction of sea resources; thus, making aquaculture more interdisciplinary than before.

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Section: Citation and Keyword Analysismentioning

confidence: 99%

Section: Citation and Keyword Analysismentioning

confidence: 99%

Extended Bibliometric Review of Technical Challenges in Mariculture Production and Research Hotspot Analysis

et al. 2023

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“…They also measured the cage motion and the mooring forces in their experiments and the results can be used to verify the numerical calculations in further studies [10]. Cheng et al [11] calculated the cage volumes and the mooring forces with different cage shapes and dimensions. They found that it is more effective to increase the width of the cage than the depth to protect the cage volume subjected to currents.…”

Section: Introductionmentioning

confidence: 99%

Uncertainty Assessment of the Remaining Volume of an Offshore Gravity Fish Cage

Liu,

Guedes Soares

2024

JMSE

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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.

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“…For example, based on physical model experiments, Løland [22], Tsukrov [23], Tang [24], Lader [25], etc., established two hydrodynamic calculation models of netting, namely the Morison model and the Screen model, and proposed corresponding empirical formulas. Based on these empirical formulas, scholars such as Moe-Føre [26], Li [27], Shainee [28], Faltinsen [29], Takagi [30], etc., used beam elements, truss elements, and concentrated mass-spring models to construct numerical models of net cages, forming various hydrodynamic characteristic numerical analysis codes, such as Aqua-FE, AquaSim, DUT-FlexSim, NaLA, and MPSL, which can be used to accurately evaluate the hydrodynamic load and deformation of net cages [31]. However, using the finite element method to establish numerical models of the netting cannot, on its own, simulate the interference of net cages and the surrounding flow.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Analysis of a Multi-Pile-Supported Offshore Wind Turbine Integrated with an Aquaculture Cage

Tu,

Zhang,

Liu

et al. 2023

JMSE

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The integrated development of offshore wind power and marine aquaculture is becoming increasingly important. However, the impact mechanism of integrating a net cage on the dynamic characteristics of offshore wind turbines remains unclear. This paper presents a design scheme for a multi-pile-supported offshore wind turbine integrated with an aquaculture net cage and conducts a preliminary theoretical analysis of the influence of an additional net cage on the wind turbine. The analysis reveals that the primary effect is an increase in hydrodynamic loads on the wind turbine foundation, while the structural frequency of the wind turbine remains largely unaffected. Furthermore, computational fluid dynamics (CFD) numerical models, whose accuracy is verified by physical experiments, are utilized to compare the hydrodynamic characteristics of the offshore wind turbine foundation with and without the net cage, considering different net solidities. The simulations identify significant changes in the flow field surrounding the foundation due to the presence of the net cage, resulting in a considerable increase in the overall hydrodynamic load on the foundation. Moreover, the mutual interference between the netting and the foundation amplifies their respective hydrodynamic loads and concentrates these loads at the upstream section of the structure. The maximum increase in hydrodynamic load for a single pile reaches 6.32 times its original value, posing significant risks to the structure. Finally, a preliminary feasibility analysis of the scheme was conducted. The results presented in this article can serve as a theoretical basis for the design of such innovative structures.

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Comparative study of five commonly used gravity type fish cages under pure current conditions

Cited by 15 publications

References 53 publications

Extended Bibliometric Review of Technical Challenges in Mariculture Production and Research Hotspot Analysis

Extended Bibliometric Review of Technical Challenges in Mariculture Production and Research Hotspot Analysis

Uncertainty Assessment of the Remaining Volume of an Offshore Gravity Fish Cage

Hydrodynamic Analysis of a Multi-Pile-Supported Offshore Wind Turbine Integrated with an Aquaculture Cage

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