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Publications
Viegas, M.D., Wang, S. and Guedes Soares, C. (2024), CFD simulation of a plane net in current, Advances in Maritime Technology and Engineering, Guedes Soares, C. & Santos T.A. (Eds.), Taylor and Francis, London, UK, pp. 577-587.
A numerical approach is proposed for simulating the hydrodynamic characteristics of a plane net in current. The fluid-structure interaction model relies on one-way coupling between a fluid model, to simulate the flow field around the undeformed structure, and on a mechanical structural model to determine the deformation caused by fluid pressure. This model is implemented for different current conditions. Validation of the numerical model is performed by comparing drag force results with published experimental data. In this study, the netting is modelled as a three-dimensional structure instead of a porous medium that has been applied commonly. Findings from the fluid model indicate that variations in current velocity have minimal impact on flow velocity behaviour but have significant effects in flow magnitude and drag force. In the model, flow reduction can be observed downstream from the net, aligning with experimental tests and prior research. The results suggest that the knotted net outperforms the knotless net and that although the fluid pressure generates deformation, it does not cause material failure. The findings demonstrate that the current numerical simulation developed in ANSYS FLUENT, is suitable for analysing hydrodynamic forces acting on aquaculture structures.
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