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Numerical modelling of a mussel line system by means of lumped-mass approach
Pribadi, A.B.K.; Donatini, L.; Lataire, E. (2019). Numerical modelling of a mussel line system by means of lumped-mass approach. J. Mar. Sci. Eng. 7(9): 309. https://dx.doi.org/10.3390/jmse7090309
In: Journal of Marine Science and Engineering. MDPI: Basel. ISSN 2077-1312; e-ISSN 2077-1312
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| Trefwoord |
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| Author keywords |
aquaculture; mussel line system; numerical modelling; current; waves |
| Auteurs | | Top |
- Pribadi, A.B.K.
- Donatini, L.
- Lataire, E.
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| Abstract |
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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