【作者】 刚傲； 马玉祥； 牛旭阳； 张少华； 董国海；

【Author】 GANG Ao;MA Yu-xiang;NIU Xu-yang;ZHANG Shao-hua;DONG Guo-hai;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology;

【机构】 大连理工大学海岸和近海工程国家重点实验室；

【摘要】 本文通过物理模型实验对孤立波与下潜水平板的相互作用进行了研究。实验采用PIV技术测量了水平板周围流场的演化特征,实验结果发现在水平板的迎浪侧和背浪侧均会产生涡,但涡的演化过程有着明显的差别。本文基于小波变换的涡结构识别方法,对流场数据进行了分析,得到了孤立波与平板相互作用过程迎浪侧与背浪侧的涡结构。结果表明,水平板迎浪侧涡的尺寸会随着波高的增大而增大,与波高呈正相关;背浪侧涡的尺寸与波高的相关性较弱。更多还原

【Abstract】 In this paper,the interaction between solitary waves and submerged plates is studied by physical model experiments.In the experiment,PIV technology was used to measure the evolution characteristics of the flow field around the submerged horizontal plate.The experimental results showed that vortices were generated on both the weather side and the lee side of the horizontal plate,but the evolution process of vortices was obviously different.In this paper,the vortex structure Identification method based on wavelet transform is used to further analyze the flow field data,then the vortex structures on the weather side and the lee side are obtained.The results show that the size of the vortex increases with the increase of wave height and is positively correlated with wave height.The correlation between the size of the vortex and the wave height is weak.更多还原