The present paper shows the results of a wave-penetration numerical investigation carried out on the Lido inlet of the Venice lagoon by means of a 2D fully-elliptic mild-slope equation finite element method model which uses internal generation of waves, and allows the simulation of breaking and bottom friction. Both dimensions, geometry and bottom topography of the Lido inlet make this case study particularly suitable for showing the actual efficiency of the internal-generation approach in applications to large and complex domains. Frequency and directional spreading have been simulated by means of the superposition principle. Frequency spreading simulations have been in particular carried out in order to allow the reproduction of some available physical model experiments, and therefore in order to allow the comparison between numerical and physical model results. The results of the overall simulations confirm internal generation of waves as an attractive alternative solution to the traditional one when wave fields characterized by not well known scattering and reflection sources as well as by wave-breaking have to be simulated.
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