模型变率对潮流定床和动床模型试验结果的影响  

Effect of distortion ratios on tidal and sediment models

作　　者：窦希萍[1] 王向明[1] 娄斌[1] 董凤舞[1] 

机构地区：[1]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029

出　　处：《泥沙研究》2007年第4期1-9,共9页Journal of Sediment Research

基　　金：国家自然科学基金资助项目(50479032)

摘　　要：为了解潮流实体模型变率的影响程度,按照窦国仁河口海岸全沙模型相似理论设计5个变率分别为2.5,4,6,8.33和12.8的系列概化河口模型,进行无丁坝和不同丁坝布置情况下清水动床、悬沙定床和悬沙动床模型试验,给出变率与航道流速和泥沙冲淤变化之间的关系。In order to know the effects of distortion ratios on tidal and sediment models, five generalized physical models with distortion ratios 2.5, 4, 6, 8.33 and 12.8 are designed according to Guoren Dou＇s similarity theory of total sediment transport modeling for estuarine and coastal regions. The tidal levels and velocities in flee models are verified. The experiments of sediment transport under the conditions of no groin, a pair of groins, slant groins and two pairs of groins are carried out. The effects of distortion ratios on the tidal currents, the depths of scour and denosit in the channel are discussed.

关 键 词：潮流 泥沙 模型 变率 

分 类 号：TV131.61[水利工程—水力学及河流动力学]