淤泥对波浪衰减作用的数值模拟  

Numerical modeling of wave damping over muddy bed

作　　者：吴永胜[1] 王兆印[1] 胡世雄[1] 

机构地区：[1]清华大学水利系河流海洋研究所,北京100084

出　　处：《水利学报》2003年第7期22-29,共8页Journal of Hydraulic Engineering

基　　金：国家自然基金委员会和香港研究资助局(RGC)资助(No.59890200;No.50109006)

摘　　要：作者建立了波浪 淤泥相互作用数学模型并利用模型分析了淤泥床面上波浪的衰减特性。与以往的波浪 淤泥相互作用模型相比,本文模型引入了淤泥床面上波浪边界层以及波浪紊动的变化特性。模型结果与实验数据相比有较好的一致性。模型分析了波浪边界层厚度,泥层Stokes边界层厚度以及泥层振幅相位滞后与波浪衰减率之间的相关关系,并给出了波浪衰减率达到最大时各参量的变化范围。A numerical model for studying the interaction between wave and muddy bed is established and applied to analyze the characteristics of wave damping over muddy bed. In the model, the wave boundary layer on the muddy bed and wave turbulent characteristics are introduced. The validity of the model is verified by using experimental data. The paper reports with this model the wave boundary layer thickness, Stokes' boundary layer thickness of mud and the relationship between mud layer phase lag and wave damping rate. The variation ranges of these parameters during maximum wave damping rate are also studied.

关 键 词：活动底泥 波浪衰减 粘弹塑性体模型 数值模型 

分 类 号：TV148[水利工程—水力学及河流动力学]