Large-Scale Numerical Modeling of Swell Waves in Bjørnafjorden Using the Phase-Resolving Wave Model REEF3D
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In the field of numerical wave modeling, wave propagation over quickly varying bathymetry is often demanding. Bjørnafjorden is an excellent example of a domain where islands and skerries disrupt the propagation of waves, and the water depth changes by several hundred meters over a short horizontal distance. The popular phase-averaging wave models are struggling to simulate these rapidly varying wave parameters accurately, and phase-resolved models are therefore needed. In this study, the fully nonlinear potential ow model REEF3D::FNPF is used to simulate the wave propagation of swell waves from an offshore location to Bjørnafjorden. The aim is to present and analyze the wave conditions in the fjord, as well as comparing the results to calculations by phase-averaging wave models, and data from _eld measurements. Five different wave inputs with varying wave height, wave period, and main direction are imposed at the offshore boundary of the numerical model.
Master’s thesis in Civil and Environmental Engineering