Abstract
The current paper reports the results of a series of small-scale physical model tests conducted to study the marine fouling effects on the wave attenuation/build-up around/inside a 3D floating gravity net cage. The artificial fouling modelled was representative of hydroids, an important fouling organism in the marine aquaculture industry. Regular wave groups with different heights, periods, and steepness were examined. The cage hydraulic response inside and around the cage models was analysed. Changes made by the cage presence to the height, energy flux, geometry and nonlinearity of the waves traversing the cage models were studied. Attenuation of the wave height and energy was observed downstream of the cage models, which grew smaller in the fouling presence and further by the fouling length. Build-ups of the wave height and energy occurred inside the cage models, which grew weaker in the fouling presence and with longer fouling. The fouling effects on the hydraulic response were more pronounced downstream as compared to those inside and upstream of the cage. The experimental data were used to derive nonlinear regression equations, indicative of the primary trends for the wave attenuation/build-up, around/inside the cage.
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Acknowledgements
The experiments were conducted in the National Iranian Marine Laboratory (NIMALA) with no charge which is highly acknowledged. The authors also appreciate the valuable guidance and support offered by managers an staff of the NIMALA. They are also very grateful to Mr. Mohammadi, Managing Director of Toorbafan Company. We also thank two anonymous reviewers for their constructive comments which greatly helped us to improve our manuscript.
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FNK: supervision, project administration, conceptualization, methodology, software, investigation, validation, writing—original draft, writing—review and editing. MZ: methodology, data curation, writing—review and editing. TA: software, validation, data curation, visualization. MB: writing—review and editing.
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Nobakht-Kolur, F., Zeinoddini, M., Aliakbari, T. et al. Wave attenuation/build-up around and inside marine fouled floating aquaculture cages under regular wave regimes. J. Ocean Eng. Mar. Energy 7, 59–81 (2021). https://doi.org/10.1007/s40722-021-00186-y
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DOI: https://doi.org/10.1007/s40722-021-00186-y