Modeling of dynamic behavior of a single-point moored submersible fish cage under currents

DeCew, Judson; Tsukrov, Igor; Risso, Ashley M.; Swift, Michael; Çelıkkol, Barbaros

doi:10.1016/j.aquaeng.2010.05.002

Cited by 110 publications

(26 citation statements)

References 11 publications

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“…Lee et al (2008) for analyzing the performance of a fish-cage system influenced by currents and waves. DeCew et al (2010) investigated the submergence behavior of a fish cage in a single-point mooring system under currents by a numerical model. Tsukrov et al (2011) investigated the normal drag coefficients of copper alloy netting used in marine aquaculture.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on flow velocity and mooring loads for multiple net cages in steady current

Zhao

Chen

et al. 2015

Aquacultural Engineering

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Section: Introductionmentioning

confidence: 99%

Experimental study on flow velocity and mooring loads for multiple net cages in steady current

Zhao

Chen

et al. 2015

Aquacultural Engineering

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“…Such a significant reduction of the water speed was found to be important for the exchange properties of oxygen and waste transport inside cages (Fredriksson et al 2007). On the other hand, the flowing water exerts a force on the cage system, which can be an important factor for cage design (Fredriksson et al 2003, Rasmussen & McLean 2004, Fredriksson et al 2007, Huang et al 2008, Lee et al 2008, DeCew et al 2010, Dong et al 2010. Previous studies have generally ignored the effect of the aquaculture system when investigating hydrodynamic processes and sediment transport in culture farms using circulation models, except for a few, e.g.…”

Section: Introductionmentioning

confidence: 99%

A three-dimensional hydrodynamic model for aquaculture: a case study in the Bay of Fundy

Wu¹,

Chaffey²,

Law³

et al. 2014

Aquacult. Environ. Interact.

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Impacts of aquaculture on the local current field and the erosion of the bottom sediment in the Bay of Fundy, Canada, have been investigated with a 3-dimensional hydrodynamic model. The model is evaluated against independent observations of the current. Model results show that the presence of fish cages restricts water flow and reduces the velocity in the surface layer occupied by the cages, but enhances the water velocity in the bottom layer beneath the cages. Sensitivity studies show that the change in the flow velocity beneath the cages is sensitive to variations in the drag coefficient and the height of the fish cages. As the drag coefficient increases, the bottom velocity also increases until a steady state value is reached. For the cage height, however, the tidal speed beneath the cages first increases with cage height and then significantly decreases with further increasing height. The maximum increase in velocity occurs when the cage height is about half the local water depth (H/H 0 = 0.5, where H is the cage height and H 0 is the water depth). The increase in bottom velocity significantly speeds up the erosion of the bottom sediment. The model results also indicate that there is an optimal drag coefficient and an optimal cage height for a specific farm site. By utilizing the optimal drag coefficient and height, it is possible to speed up sediment erosion beneath the cages and, thus, decrease the environmental problems caused by accumulated fish farm waste.

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“…The net chamber is formed by attaching net panels to the cage framework. Engineers at UNH designed and evaluated components in the cage frame to make it a submersible system (DeCew et al 2010b). Information gathered at the UNH OOA site helped these three companies improve their containment systems and increase global sales.…”

Section: Intermediate Mooringsmentioning

confidence: 99%

“…Polysteel lines that were tensioned and held in place by 1.43 m composite subsurface buoys in the corners and center of the grid (DeCew et al 2010a(DeCew et al , 2012Fredriksson et al 2004). The robust grid provided the necessary infrastructure to evaluate submersible cage systems DeCew et al 2010b). One such system extensively tested was the Sea Station TM 600 and 3000 m 3 cages (Fig.…”

Section: Intermediate Mooringsmentioning

confidence: 99%

Technological Approaches to Longline- and Cage-Based Aquaculture in Open Ocean Environments

Goseberg

Chambers

Heasman

et al. 2017

Aquaculture Perspective of Multi-Use Sites in the Open Ocean

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As the worldwide exploitation rate of capture fisheries continues, the development of sustainable aquaculture practices is increasing to meet the seafood needs of the growing world population. The demand for aquatic products was historically satisfied firstly by an effort to expand wild catch and secondly by increasing land-based and near-shore aquaculture. However, stagnation in wild catch as well as environmental and societal challenges of land-based and near-shore aquaculture have greatly promoted efforts to development farming offshore technologies for harsh, high energetic environments. This contribution thus highlights recent technological approaches based on three sample sites which reach out from sheltered near-shore aquaculture sites to sites with harsh wave/current conditions. It compares and evaluates existing technological approaches based on a broad literature review; on this basis, we then strongly advocate for presently available aquaculture technologies to merge with future offshore structures and platforms and to unveil its added value through synergetic multi-use concepts. The first example

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Modeling of dynamic behavior of a single-point moored submersible fish cage under currents

Cited by 110 publications

References 11 publications

Experimental study on flow velocity and mooring loads for multiple net cages in steady current

Experimental study on flow velocity and mooring loads for multiple net cages in steady current

A three-dimensional hydrodynamic model for aquaculture: a case study in the Bay of Fundy

Technological Approaches to Longline- and Cage-Based Aquaculture in Open Ocean Environments

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