Author(s): Oleg Makarynskyy; Antonio Alberto Pires Silva; Dina Makarynska

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Keywords: Nonstationary; Numerical; Simulation; Spectra; Conditions; Nearshore

Abstract: Nearshore spectral wave modeling finds a variety of applications with increasing importance in recent years. Therefore, a study of the sensitivity of model outcome to changes of model input parameters is essential in a number of the applications. The SWAN model was applied to a sandy beach in the west coast of Portugal. Six numerical simulations with different computational steps and initial conditions were compared to wave observations obtained with a pressure sensor deployed close to the shore. The simulations show a low dependency of the output results to changes in the time step of computations. However, both parameters analyzed (Hs and T02) depend on the initial parameterization of the wave field in nonstationary runs: the use of the hot start option allows obtaining of reliable results from the very first computational steps.

DOI:

Year: 2001