AbstractUnderstanding the multi-cage interaction mechanism in fish cage arrays and the hydrodynamic behaviour of cage structures will help engineers explore the feasibility of offshore fish farming. In this study, a semi-analytical method is developed to simulate the wave response of an array of cylindrical fish cages with arbitrary layouts and dimensions, including the wave interference effects among the multiple cages. By eigenfunction expansions, the general solution of the present research problem is expressed in the form of a Fourier-Bessel series, and the corresponding particular solution is obtained by introducing relevant boundary conditions and the least-squared method. The simulation results show that significant wave effects occur at the top of the cages, and the dynamic response of each cage has obvious phase differences. Parametric studies on the wave forces show that the wave force is zero at a specific wave frequency and the wave forces are decreased under high porosity nets.
DNV (2021): Marine Aquaculture Forecast: Oceans' future to 2050, DET NORSKE VERITAS GROUP.
FAO (Food and Agriculture Organization) (2018): The State of World Fisheries and Aquaculture 2018, United Nations.
Flügge, W. (1973): Stress in Shells, SPRINGER. Guo, W., Li, T., Zhu, X., Miao, Y., Zhang, G. (2017): Vibration and acoustic radiation of a finite cylindrical shell submerged at finite depth from the free surface, Journal of sound and vibration, ELSEVIER, vol. 393, pp.338-352.
Ji, M., Inaba, K., Triawan, F. (2019): Vibration characteristics of cylindrical shells filled with fluid based on first-order shell theory, Journal of Fluids and Structures, ELSEVIER, vol. 85, pp.275-291.
Kagemoto, H., Yue, D.K. (1986): Interactions among multiple three-dimensional bodies in water waves: an exact algebraic method, Journal of fluid mechanics, CAMBRIDGE UNIVERSITY PRESS, vol. 166, pp.189-2.
Klebert, P., Lader, P., Gansel, L. and Oppedal, F. (2013): Hydrodynamic interactions on net panel and aquaculture fish cages: A review, Ocean Engineering, ELSEVIER, vol. 58, pp.260-274.
Ma, M., Zhang, H., Jeng, D.S., Wang, C.M. (2022): Analytical solutions of hydroelastic interactions between waves and submerged open-net fish cage modeled as a porous cylindrical thin shell, Physics of Fluids, AIP PUBLISHING, vol. 34(1), p.017104.
Mandal, S., Sahoo, T. (2016): Gravity wave interaction with a flexible circular cage system, Applied Ocean Research, ELSEVIER, vol. 58, pp.37-48.
Selvan, S.A., Gayathri, R., Behera, H., Meylan, M.H. (2021): Surface wave scattering by multiple flexible fishing cage system, Physics of Fluids, AIP PUBLISHING, vol. 33(3), p.037119.
Su, W., Zhan, J.M., Huang, H. (2015): Analysis of a porous and flexible cylinder in waves, China Ocean Engineering, SPRINGER, vol.
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