摘要
合理描述波浪破碎后垂向悬沙分布,对于粉砂质海岸泥沙运动的研究具有重要意义。根据对破碎波作用下扩散系数的分析,考虑底部边界层和波浪破碎的联合紊动扩散影响,建立了全水深的悬沙垂线分布模型。利用水槽实验数据验证了破碎波作用下悬沙分布模型的合理性,认为破碎增强系数能较好地反映波浪破碎使上层水体悬沙浓度明显增加的现象。
It is significant for the research on the sediment movement along silt-sandy coast to describe the vertical distribution of suspended sediment under the wave breaking effect accurately. A model is established to describe full-depth vertical distribution of suspended sediment by analyzing the diffusion coefficient under breaking wave effect and taking the combined turbulent fluctuation diffusion influence of bottom boundary layer and wave breaking into account. The rationality of suspended sediment distribution model under breaking waves is proved through the flume experiment. In conclusion,wave breaking intensified coefficient reflects the phenomenon that the concentration of suspended sediment of the upper water is markedly increased by wave breaking well.
出处
《港工技术》
2013年第5期4-6,29,共4页
Port Engineering Technology
基金
大连理工大学海岸和近海工程国家重点实验室研究基金资助(LP12004)
水沙科学及水灾害防治重点实验室开放基金项目(2010SS01)
关键词
波浪破碎
垂向悬沙分布
扩散系数
粉砂质海岸
wave breaking
distribution of vertical suspended sediment
diffusion coefficient
silt-san-dy coast
