Harbor Oscillations Induced by Composite Waves in Rectangular Basins

Abstract

This paper presents the results of experiments on harbor oscillations induced by composite waves in rectangular basins with a constant depth. The experiments were carried out in a two-dimensional wave tank in which a fully open harbor model was installed. In order to obtain the constant wave height the wave period was kept constant through a series of the tests but the harbor length was variable. The wave records were taken at both harbor entrance and end, and the wave amplification factor, defined as the ratio of the wave height in a certain point to that of standing waves when the entrance was closed, was derived for both regular and composite waves by the harmonic analysis. The result of comparison between the response curves for regular and composite waves, shows that the resonant characteristics by composite waves is different from that by regular waves by mutual interaction of component waves, especially at resonant modes.