非静压方程与波作用谱模型的波浪传播嵌套模拟  

Simulation of wave transformation by nesting the non-hydrostatic equation and wave action spectrum model

作　　者：邹国良[1] 张庆河[1] 

机构地区：[1]天津大学水利仿真与安全国家重点实验室,天津300072

出　　处：《哈尔滨工程大学学报》2014年第1期126-131,共6页Journal of Harbin Engineering University

基　　金：国家863计划基金资助项目(2012AA051709);天津市自然科学基金重点资助项目(12JCZDJC30200)

摘　　要：为了合理描述波浪从大尺度范围到小尺度范围传播变形,将基于求解相位平均的波作用谱模型和求解相位的非静压波浪模型进行嵌套。非静压模型的嵌套边界条件由波作用谱模型计算得到的波浪谱经过空间和频率插值提供。波浪在等水深地形和斜坡地形上传播的嵌套模拟算例结果表明,嵌套模型可以获得较为准确的波高、周期以及波浪谱,可以合理描述波浪从大范围区域向小范围区域的传播。A nesting model between the phase averaging wave action spectrum model and the phase resolving nonhydrostatic wave model was developed in order to simulate wave propagation and transformation from a large-scale area to a relatively small-scale area. The nested boundary conditions of the non-hydrostatic model are provided by wave spectra through spatial and frequency interpolation, which are obtained through calculations of the wave action spectrum model. Numerical results from two examples of wave propagation in constant water depth and with an angle on a slope indicate that the nesting model can provide more accurate wave height, cycle, and wave spectrum, as well as reasonably describe wave transformation from a large-scale area to a relatively small-scale area efficiently.

关 键 词：非线性浅水方程 波作用谱模型 非静压 波浪嵌套 

分 类 号：TV139.2[水利工程—水力学及河流动力学]