A SPECTRAL MODEL FOR BLOCKING OF RANDOM WAVES

被引：3

作者：

Suastika, I. K. ^{[1
,2
]}

机构：

[1] Inst Teknol Sepuluh Nopember ITS, Fac Marine Technol, Dept Naval Architecture & Shipbldg Engn, Surabaya 60111, Indonesia

[2] Delft Univ Technol, NL-2600 AA Delft, Netherlands

来源：

COASTAL ENGINEERING JOURNAL | 2012年 / 54卷 / 02期

关键词：

Wave blocking; random waves; spectral model; uniformly-valid approximation; wave dissipation; ENERGY-DISSIPATION; WATER-WAVES; TRANSFORMATION; REFLECTION;

D O I：

10.1142/S0578563412500131

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A spectral model is presented for blocking of long-crested random waves due to nonuniform collinear adverse current in the steady state situation. The spatial evolution of the spectral components in the region far from the blocking points (far field) is modeled with a spectral wave action balance, which is matched with a uniformly-valid solution in the region near the blocking points (near field). Wave-energy dissipation is taken into account both in the far and near fields, particularly dissipation due to wave breaking. Model results are compared with experimental data for the case of partial blocking and of nominally complete blocking. The value of the onset-breaking parameter gamma, which is a calibration parameter, that can best reproduce the observations in both cases is gamma approximate to 0.55. The fitted model is able to reproduce the observed patterns of the wave-height variation along the flume well and the observed variance spectra fairly well.

引用

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