The statistical distribution of zero-crossing wave heights in Gaussian mixed sea states is examined by analyzing numerically simulated data. Nine different kinds of bimodal scalar spectra are used to study the effects of the relative energy ratio and the peak frequency separation between the low and high frequency wave fields on the wave height distribution. Observed results are compared with predictions of probabilistic models adopted in practice. Comparisons of the empirical data with relevant probabilistic models reveals that the Rayleigh model systematically overestimates the number of observed wave heights larger than the mean wave height, except for one of the cases analyzed. None of the models used to predict the observed exceedance probabilities is able to characterize adequately all cases of bimodal sea states examined here.
Wave Height Distribution in Mixed Sea States
Contributed by the OMAE Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME Journal of Offshore Mechanics and Arctic Engineering. Manuscript received by the ASME OMAE Division, Aug. 2001; final revision, Oct. 2001. Associate Editor: A. Naess.
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Rodriguez, G., Soares, C. G., Pacheco , M., and Pe´rez-Martell, E. (October 1, 2001). "Wave Height Distribution in Mixed Sea States ." ASME. J. Offshore Mech. Arct. Eng. February 2002; 124(1): 34–40. https://doi.org/10.1115/1.1445794
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