Experimental investigation on hydrodynamic effectiveness of a water ballast type floating breakwater
Experimental investigation on hydrodynamic effectiveness of a water ballast type floating breakwater
复制标题
水压载式浮动防波堤水动力有效性试验研究
DOI：
10.1016/j.oceaneng.2018.08.030
复制
发表时间：
2018
影响因子：
5
通讯作者：
Yuan Chunguang
中科院分区：
文献类型：
--
作者：
Yang Zhiwen;Xie Mingxiao;Gao Zhiliang;Xu Ting;Guo Weijun;Ji Xinran;Yuan Chunguang
提出了一种新型的压载浮式防波堤。该结构由压载水双浮箱和竖板组成，采用多种消浪机构。实验研究了作为波浪透射系数的函数的水动力有效性。考虑了波高和周期变化范围较大的二维规则波的作用。对无系缆浮式防波堤的运动响应进行了实测。重点讨论了入射波特性、立板高度、不同吃水、水或干砂压载、有无顶部挡板等因素对波浪作用的影响。与以往文献报道的其他新型浮式防波堤的新结构进行了比较。试验结果表明，与干砂压载相比，浮箱压载不仅提高了浮式防波堤的耐波性能，而且增大了入射波的衰减。增大竖直板的高度和/或浮体的吃水深度有利于减小波浪传播。然而，在浮体顶部增加额外的挡板似乎不利于波浪衰减效果。与以往著名的浮式防波堤模型相比，本文的压载水型具有竞争力的效果。
This paper proposes a new type of water ballast floating breakwater. The structure consists of a water ballast double floating box and a vertical plate, which uses several wave attenuation mechanisms. The hydrodynamic effectiveness which is presented as a function of the wave transmission coefficient is investigated experimentally. The action of 2D regular waves with wide ranges of wave heights and periods is considered. The motion responses of the floating breakwater without mooring line have also been measured. Emphasis is given on the effect of the incident wave characteristics, the height of the vertical plate, different draft, water or dry sand ballast, with and without top baffle. Comparison of the new structure is also made with other novel floating breakwaters reported in the previous literature. Experimental results show that ballasting with water in the floating box not only enhances the seakeeping performance of the floating breakwater, but also increases the incident wave attenuation when compared to dry sand ballast. Heightening the height of the vertical plate and/or the draft of the floating body is conducive to decreasing the wave transmission. Adding an extra baffle on the top of the floating body, however, does not seem conducive to the wave attenuation effectiveness. Compared to the previous well-known floating breakwater model, the water ballast type in this paper has competitive effectiveness.