用改进的Boussinesq方程模拟潜堤上的波浪变形  

Simulation of Wave Propagation Over a Submerged Bar Using a Modified Boussinesq Equation

作　　者：郑永红[1] 沈永明[2] 吴修广[2] 游亚戈[1] 

机构地区：[1]中国科学院广州能源研究所,广州510640 [2]大连理工大学海岸及近海工程国家重点实验室,辽宁大连116023

出　　处：《中国工程科学》2004年第4期34-40,共7页Strategic Study of CAE

基　　金：国家自然科学基金重点资助项目 (10 3 3 2 0 5 0 );国家自然科学基金资助项目(5 0 3 790 0 1);国家杰出青年科学基金资助项目 (5 0 12 5 92 4) ;广东省自然科学基金资助项目(2 0 0 2 15 0 3 )

摘　　要：研究了一种改进的Boussinesq方程 ,采用预报校正格式对该方程进行了数值离散 ,并对淹没潜堤上的波浪变形进行了数值模拟 ,从数值模拟结果和实测值的比较结果来看 ,该方程能较好地模拟波浪在潜堤上传播时波面的变形过程 ,可以用于实际中的波浪问题计算。这种改进的Boussinesq方程本身及其求解方法需做进一步的完善。研究结果为实际应用Boussinesq方程来研究复杂地形上的波浪传播提供一定的理论指导。A modified Boussinesq equation is numerically studied. It is discretized by use of the predictor\|corrector scheme. The numerical model applied to the propagation of waves over a submerged bar can produce results that are in general agreement with some laboratory measurements. The surface transformation of waves over the submerged bar is reproduced successfully by the numerical simulation.Comparison of numerical results with experimental data shows that the modified Boussinesq equation itself and the numerical solution method for it need to be studied further. These results can give some theoretical guidance to the applications of Boussinesq equation to wave propagation over complex topography in coastal areas.

关 键 词：改进的Boussinesq方程 数值模拟 波浪变形 潜堤 

分 类 号：O353.2[理学—流体力学]