浅水回流的混合有限分析解  

Hybrid Finite Analytic Solutions of Shallow Water Circulation

作　　者：槐文信[1] 沈毅一 小松利光[3] 

机构地区：[1]水资源与水电工程科学国家重点实验室武汉大学,武汉430072 [2]佛罗里达大学土木与海岸工程系,美国佛罗里达州fl32603 [3]九州大学土木工程系

出　　处：《应用数学和力学》2003年第9期956-962,共7页Applied Mathematics and Mechanics

基　　金：教育部骨干教师资助计划基金资助项目(430116)

摘　　要：　混合有限分析法是一种在局部矩形单元上进行离散的数值格式,为了适应非规则边界,建立了Sigma坐标系的浅水回流数学模型·　采用1)风引起的回流,2)密度驱动的回流,3)假潮。The hybrid finite analytic(HFA) method is a kind of numerical scheme in rectangular element. In order to simulate the shallow circulation in irregular bathymetry by HFA scheme, the model in sigma coordinate system was obtained. The model has been tested against three cases: 1) Wind induced circulation; 2) Density driven circulation and 3) Seiche oscillation. The results obtained in the present study compare well with those obtained from the corresponding analytical solutions under idealized for the above three cases. The hybrid finite analytic method and the circulation model in sigma coordinate system can be used calculate the flow and water quality in estuaries and coastal waters.

关 键 词：潮汐 风应力 回流 浅水 假潮 混合有限分析法 密度梯度 

分 类 号：P731.2[天文地球—海洋科学]