Dynamic simulation of a fish cage system subjected to currents and waves

Lee, Chun‐Woo; Kim, Young-Bong; Lee, Gun-Ho; Choe, Moo-Youl; Lee, Mi-Kyung; Koo, Kwi-Yeon

doi:10.1016/j.oceaneng.2008.06.009

Cited by 134 publications

(54 citation statements)

References 21 publications

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“…Nevertheless, few authors (e.g., Lader et al 2008, Lee et al 2008Moe et al, 2010) have found that the internal volume loss of an aquaculture net pen may fluctuate between 20% and 70% when considering current speeds ranging between 0.13 and 1.0 m s -1 (Table 3). …”

Section: Discussionmentioning

confidence: 99%

“…This is significant for farming and productivity, due to the restrictions imposed during production, when dealing with sanitary management. For instance, the highest farming density of the Atlantic salmon (Salmo salar) in Norway is not higher than 25 kg m -3 (Norwegian Ministry of Fisheries and Coastal Affairs, 2008) while in Chile this density should not exceed 17 kg m -3 for the Lee et al (2008) same species (Res. Nº 1449/2009 from the Servicio Nacional de Pesca y Acuicultura).…”

Section: Discussionmentioning

confidence: 99%

“…These culture systems correspond to highly flexible hydro elastic structures, composed by a great number of structural elements (Kristiansen & Faltinsen, 2012) and are affected by hydrodynamic forces that modify their shape (Lader & Enerhaug, 2005). The effects of the forces generated by currents and ocean waves on the deformation of the net pens have been studied through numerical models by different authors (Aarsnes et al, 1990;Berstad et al, 2004;Lee et al, 2005;Huang et al, 2006;Lee et al, 2008;Moe et al, 2010). Few authors have conducted tests in tanks and constructed commercial size prototypes, in a more practical approach, in order to study the ocean dynamic loading (Lader & Enerhaug, 2005;Lader et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Volume loss of an aquaculture net pen due to current speed and linear weight of sinker ring

López

Hurtado

Queirolo

et al. 2015

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ABSTRACT. The internal volume of aquaculture net pens is an important variable to fish comfort during the culture process. In this research, a module of net pens was modelled using the finite element (FE) software AquaSim®. The net pens deformation was analyzed under different current speeds (0.25, 0.50 and 0.75 m s ). It was found that under the most severe condition, that is, the highest current speed and the lowest linear weight of the sinker ring (0.75 m s -1 and 25 kg m -1 , respectively), the volume loss with respect to initial undeformed net pen volume reached a maximum value of 53%. This occurred in the net pen firstly exposed to currents. Based on modeling results, a relationship between net pen volume loss due to the combined effects of both water current speed and linear weights of the sinker rings is proposed. Key words: net pen deformation, current speed, sinker ring, Chile. , respectivamente), la pérdida de volumen de la primera jaula del módulo alcanzó 53%. A partir de los resultados obtenidos en los modelos, se determinó una función que relaciona la pérdida de volumen de la jaula con la velocidad de corriente y el peso lineal del anillo cortacorrientes. Palabras clave: deformación de la jaula, velocidad de corriente, anillo cortacorriente, Chile.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Volume loss of an aquaculture net pen due to current speed and linear weight of sinker ring

López

Hurtado

Queirolo

et al. 2015

lajar

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“…여기서 rW는 해수의 밀도, Vn은 질점의 부피, Km 은 부가질량계수로써 구의 경우는 1.5이며 (Wakaba and Balachandar, 2007;Takaki et al, 2004;Lee et al, 2008) …”

Section: Dm〓rwvnkm (2)unclassified

Low-Carbon trawl design with analysis of a gear drags and calculation of construction costs using numerical methods

Lee

Lee²

2010

Journal of the Korean society of Fisheries Technology

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Fuel consumption in fisheries is a primary concern due to environmental effects and costs to fishermen.Much research has been carried out to reduce the fuel consumption related to fishing operations. The fuel consumption of fishing gear during fishing operation is generally related to hydrodynamic resistance on the gear. This research demonstrates a new approach using numerical methods to reduce fuel consumption. By designing the fishing gear using drawing software, the whole and partial resistance force on the gear can be calculated as a result of simulations. The simulation results will suggest suitable materials or gear structure for reducing the hydrodynamic forces on the gear while maintaining the performance of the gear. This research will helpful to reduce the CO2 emissions from fishing operations and lead to reduce fishing costs due to fuel savings.

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“…The three dimensional numerical netting model was established to calculate and estimate the shapes, inter-tensions and their distribution [10]. Lee and Zhao established the numerical model to describe the hydrodynamic behavior and deformation of net cage and fishing netting for optimization design [11][12]. Li et al developed a numerical model based on lumped mass method to set up the motion equations for rectangle and diamond meshes.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the knotted nylon netting panel

Chen

2016

MATEC Web Conf.

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Abstract.A piece of netting, consists of the 8 8 meshes, fixed on a square frame, was simulated and the tensions and their distribution, the positions of knots and netting shape were calculated by means of MATLAB in computer. The dynamic mathematic model was developed based on lumped mass method, the netting was treated as spring-mass system, the Runge-Kutta fifth-order and sixth-order method was used to solve the differential equations for every step, then the displacement and tension of each mass point were obtained. For verify this model, the tests have been carried out in a flume tank. The results of the numerical simulation fully agreed with the experiments.

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Dynamic simulation of a fish cage system subjected to currents and waves

Cited by 134 publications

References 21 publications

Volume loss of an aquaculture net pen due to current speed and linear weight of sinker ring

Volume loss of an aquaculture net pen due to current speed and linear weight of sinker ring

Low-Carbon trawl design with analysis of a gear drags and calculation of construction costs using numerical methods

Numerical simulation of the knotted nylon netting panel

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