WEAKLY NON-GAUSSIAN MODEL OF WAVE HEIGHT DISTRIBUTION FOR NONLINEAR RANDOM WAVES

[摘要] The wave height distribution with Edgeworth's form of a cumulative expansion of probability density function(PDF) of surface elevation are investigated. The results show that a non-Gaussian model of wave height distribution reasonably agrees with experimental data. It is discussed that the fourth order moment(kurtosis) of water surface elevation corresponds to the first order nonlinear correction of wave heights and is related with wave grouping.

[学科分类] 建筑学

[关键词] random waves;non-Gaussian model;height distribution