Liu, ZC., Mohapatra, S.C. and Guedes Soares, C. (2021), “Finite Element Analysis of the Effect of Currents on the Dynamics of a Moored Flexible Cylindrical Net Cage”, Journal of Marine Science and Engineering, Vol. 9, 159 (19 pages).

A numerical model associated with wave-current interaction with a moored flexible cylindrical cage was developed based on the finite element method. An analytical model is formulated under the linearized wave theory and small structural response and a semi-analytical solution is obtained using Fourier Bessel series solution and least squares approximation method along with a matching technique. The numerical results from the finite element analysis of the horizontal displacements for different design parameters under uniform current are compared with the analytical model solutions. It is seen that they have a good level of agreement with their results. The effects of different current speeds and time on the cage shapes are analysed from finite element results. Further, the mooring forces on the flexible cage for different values of cage height and cage radius are also presented. The comparison of results indicates that the numerical model results can be used with confidence in the design of a flexible cylindrical net cage for application to offshore aquaculture.

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