A Semi-Analytical Model for Studying Hydroelastic Behaviour of a Cylindrical Net Cage under Wave Action

In the present study, a semi-analytical model based on small-amplitude wave theory is developed to describe fields around single gravity-type cylindrical open fish net cage. The cage may be submerged different depths below free-water surface. modelled as flexible porous membrane, and deflection of chamber expressed by transverse vibration equation strings. velocity potential expanded in form Fourier–Bessel series unknown coefficients these are determined from matching boundary conditions least squares method. number terms for solution used convergence studies. results exhibit significant hydroelastic characteristics cages, including distribution properties surface, pressure drop at interface, structural deflection, loading along height. addition, relationships between forces with hydrodynamic parameters also revealed. findings presented herein should useful engineers who designing systems.