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Wave Period Distributions in Non-Gaussian mixed sea states

China Ocean Engineering 2013年第6期27卷 809-820页

作者：王迎光 Department of Naval Architecture and Ocean Engineering Shanghai Jiao Tong University state Key Laboratory of Ocean Engineering Shanghai Jiao Tong University

The wave period probability densities in non-Gaussian mixed sea states are calculated by utilizing a transformed Gaussian process method. The transformation relating the non-Gaussian process and the original Gaussian process is obtained based on the equivalence of the level up-crossing rates of the two processes. A saddle point approximation procedure is applied for calculating the level up-crossing rates in this study. The accuracy and efficiency of the transformed Gaussian process method are validated by comparing the results predicted by using the method with those predicted by the Monte Carlo simulation method.

关键词： wave period mixed sea state non-Gaussian saddle point approximation Monte Carlo simulation

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Modified Joint Distribution of Wave Heights and Periods

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China Ocean Engineering 2016年第3期30卷 359-374页

作者： H.D.Zhang C.Guedes Soares Centre for Marine Technology and Ocean Engineering (CENTEC) Instituto Superior Técnico Universidade de Lisboa

The modified versions of the linear theoretical model of Longuet-Higgins （1983） are derived in this work and also compared with the laboratory experiments carried out in MAR1NTEK. The main feature of modifications is to replace the mean frequency in the formulation with the peak frequency of the wave spectrum. These two alternative forms of joint distributions are checked in three typical random sea states characterized by the initial wave steepness. In order to further explore the properties ＆these models, the associated marginal distributions of wave heights and wave periods are also researched with the observed statistics and some encouraging results are obtained.

关键词： Longuet-Higgins joint distribution mixed sea state nonlinear wave series wave height wave period

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Asymptotic Calculation of Wave Period Statistics in Non-Gaussian mixed sea

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Journal of Shanghai Jiaotong university(Science) 2013年第1期18卷 54-60页

作者：王迎光夏一青 Department of Naval Architecture and Ocean Engineering Shanghai Jiaotong University state Key Laboratory of Ocean Engineering Shanghai Jiaotong University Department of Naval Architecture and Ocean Engineering Shanghai Jiaotong University

This article concerns the calculation of the wave period probability densities in non-Gaussiau mixed sea states. The calculations are carried out by incorporating a second order nonlinear wave model into an asymptotic analysis method which is a novel approach to the calculation of wave period probability densities. Since all of the calculations are performed in the probability domain, the approach avoids long time-domain sinmlations. The accuracy and efficiency of the asymptotic analysis method for calculating the wave period probability densities are validated by comparing the results predicted using the method with those predicted by using the Monte-Carlo simulation （MCS） method.

关键词： wave period statistics mixed sea state nonlinear wave model asvmototic method simulation

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