Numerical model of a mussel longline system: Coupled dynamics

Raman-Nair, W.; Colbourne, Bruce; Gagnon, Mathieu; Bergeron, P.

doi:10.1016/j.oceaneng.2008.05.008

Cited by 20 publications

(5 citation statements)

References 1 publication

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“…The purpose was to analyze the two floating systems with the conclusion that longtube yields in the reduction of dynamic loads compared to traditional longline system. The dynamics of a model mussel longline system was studied by Raman-Nair [10] by means of a lumped mass approach. The purpose of the paper was to come up with a method to perform a design optimization of shellfish aquaculture by means of numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modelling of a Mussel Line System by Means of Lumped-Mass Approach

Pribadi¹,

Donatini²,

Lataire³

2019

JMSE

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This paper describes a numerical model to simulate the behavior of a mussel longline system, subjected to environmental loads such as waves and current. The mussel line system consists of an anchor, a mooring chain, a long backbone line, mussel collector lines and buoys. The lumped-mass open-source code MoorDyn is modified for the current application. Waves are modelled as a directional spectrum, and the current as a homogeneous velocity field with an exponential vertical distribution. A Coulomb model is implemented to model the horizontal friction between nodes and the seabed. Cylindrical buoys with three translational degrees-of-freedom are modelled by extending the simplified hydrodynamic model in use for line’s internal nodes with additional properties like cylinder height, diameter and mass. Clump weights are modelled in a similar way. For validation purposes, the results of the present software are compared with the commercially available lumped-mass based mooring dynamic software, OrcaFlex.

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Section: Introductionmentioning

confidence: 99%

Numerical Modelling of a Mussel Line System by Means of Lumped-Mass Approach

Pribadi¹,

Donatini²,

Lataire³

2019

JMSE

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“…Models based on numerical methods can be used not only for dimensioning longlines and structures, but also to predict their behaviour under harsh environmental conditions. The dynamics of mussel longline systems were studied by modelling the culture as lumped masses attached to the main line initially (15,16). Modelling the mussel culture allows one to optimize the dimensions of the mooring and adapt it to the size of the culture (15,16).…”

Section: Considerationsfor Thedesignmentioning

confidence: 99%

Offshore mussel aquaculture: new or just renewed?

2009

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“…The use of a longline scheme is a well-implemented marine culture practice for a large floating marine farm [4], although there are many design factors to be considered for an open water site [9]. Various numerical methods have been developed to analyze the coupling of the longline, culturing units, buoys, and anchor lines by means of a lumped model under waves and currents [10], or else a mass-based model for kelp longline [11]. A single longline is typically used to develop a numerical method or analyze the coupling [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Sub-Surface Longline Marine Aquaculture Farm for Co-Existence with Offshore Wind Farm

Boo¹,

Shelley²,

Shin

et al. 2023

JMSE

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There has been growing interest recently in hybrid installations integrating the offshore wind farm and aquaculture farm as co-existence while optimizing ocean space use. The offshore marine farms beyond coastal or sheltered areas will require mooring to ensure the station-keeping of the farm system during the storms. In the present work, a sub-surface longline farm is installed in a fixed offshore wind farm at a distance from the wind foundations. The farm is designed to cultivate oysters in multi-compartment bags attached to the longlines vertically. The farm with a cultivating area of 200 m × 200 m is supported by the various farm lines made of polypropylene and buoys that is moored with catenary mooring arrangements. Drag coefficients of a full-scale oyster bag in wave and current are determined using the results of wave basin tests. A lumped model is developed and validated with a complete model for a partial farm. The lumped model is used to simulate the coupled responses of the whole farm in the site extreme waves and currents of a 50-year return period. The strength and fatigue designs of the mooring and farm lines are evaluated against the industry standards and confirmed to comply with the design requirements.

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Numerical model of a mussel longline system: Coupled dynamics

Cited by 20 publications

References 1 publication

Numerical Modelling of a Mussel Line System by Means of Lumped-Mass Approach

Numerical Modelling of a Mussel Line System by Means of Lumped-Mass Approach

Offshore mussel aquaculture: new or just renewed?

Design and Analysis of a Sub-Surface Longline Marine Aquaculture Farm for Co-Existence with Offshore Wind Farm

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