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Publications
Viegas, M.D., Wang, S. and Guedes Soares, C. (2024), One-way CFD/FEM analysis of a fish cage in current conditions, Journal of Marine Science and Engineering, Vol. 12, 2268.
This paper investigates the hydrodynamic characteristics of a fish cage in a current using a fluid-structure interaction model with a one-way coupling between a fluid solver and a structural model. The model simulates the flow field around the undeformed structure and uses a mechanical structural model to determine the deformation caused by fluid pressure. Various current conditions are applied to assess performance. The numerical model is validated by comparing drag force results with published experimental data. The netting is modelled as a three-dimensional structure. Results from the fluid model show that variations in current velocity have minimal impact on flow behaviour but significantly influence flow magnitude and drag force. The model demonstrates flow reduction inside and downstream of the net, aligning with experimental findings and previous research. Mechanical results indicate that knotted nets outperform knotless ones, and although fluid pressure induces deformation, it does not lead to material failure.
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