矩形及其扩展形状港湾内的水波共振  

Water-wave resonance within a rectangular harbor and its extensional shapes

作　　者：郑金海[1,2] 董文凯[2] 徐龙辉[2,3] 王岗[1,2] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,南京210098 [2]河海大学港口海岸与近海工程学院,南京210098 [3]苏州市航道管理处,苏州215002

出　　处：《计算力学学报》2014年第2期254-258,共5页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(51209081);中央高校科研业务费(2012B06514)资助项目

摘　　要：从理论上给出了矩形封闭港湾的特征参数表达式,并采用Boussinesq模型模拟比较了矩形及其扩展形状港湾内的水波共振现象,研究了边界对港湾共振的影响。通过定义无量纲参数熵定量比较了不同港湾内各模态能量分布的集散度。结果表明,矩形港湾短边界曲率的微小增加,可以使得港内能量分布到更多的模态,有利于改善其内的水波共振。The paper presents expressions of eigen vales for oscillations within a rectangular harbor, and then uses the Boussinesq model to simulate harbor oscillation in rectangular basins and their extensional shapes to investigate the effects of boundary conditions. The entropy measuring equipartition is intro- duced to quantitatively compare oscillations within different basins. It is shown that slight changes of the short side of rectangular basins could result in that energy re-distribute in more modes ,which may miti- gate oscillations dramatically.

关 键 词：港湾共振 水波共振 矩形港湾 BOUSSINESQ方程 水波理论 

分 类 号：O353[理学—流体力学]