Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8059872 | Coastal Engineering | 2014 | 10 Pages |
Abstract
In this experiment, a cylinder with 0.25Â m in diameter was adopted and different wave parameters, such as focused wave amplitude, peak frequency, frequency bandwidth and directional spreading index, are considered. The model scale kpa (kp is the wave number corresponding to peak frequency, a is the radium of the cylinder) varies from 0.32 to 0.65. The maximum forces of multi-directional focused wave on cylinder were measured and investigated. The results showed that the wave parameters have a significant influence on the wave force, and that the spatial profile of the surface of multi-directional focused wave can also affect its force on the cylinder, which is different from two-dimensional wave. In addition, the 'secondary loading cycle' phenomenon was also observed and discussed. In our experiments, the 'secondary loading cycles' occur when kAÂ >Â 0.36 for all cases. While in some referred small scale experiments, the secondary load cycles are observed even for kAÂ =Â 0.2, when the waves are longer enough. To larger model scale, the pronounced secondary load cycle occurs with larger wave steepness waves.
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Physical Sciences and Engineering
Engineering
Ocean Engineering
Authors
Jinxuan Li, Zhanhang Wang, Shuxue Liu,