基于一维双层Boussinesq模型的破碎波和增水模拟  

Modeling Wave Breaking and Wave Setup by One-dimensional Two-layer Boussinesq Model

作　　者：蔡志文[1] 何春荣[1] 刘小龙[1] 丁军[1] 陈文炜[1] CAI Zhiwen;HE Chunrong;LIU Xiaolong;DING Jun;CHEN Wenwei(China Ship Scientific Research Center,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心,无锡214082

出　　处：《中国造船》2023年第1期246-256,共11页Shipbuilding of China

摘　　要：将由10个方程组成的一维双层Boussinesq模型进行简化,加入人工黏性实现对破碎波的模拟,用于模拟近岸波浪浅化、破碎及增水现象。参考FUNWAVE的处理方法,使一维双层Boussinesq模型可用于干湿边界的模拟。4个经典算例结果表明,该模型能较好地模拟非线性波的传播、波浪破碎、增减水和干湿边界的变化。A simple numerical model of two-layer Boussinesq equations is proposed.The number of governing equations is reduced from 10 to 8.An empirical eddy viscosity model is adopted to account for wave breaking.The simple method based on the FUNWAVE is employed to simulate the wet-dry boundary.Accuracy of the dispersion,shoaling gradient and nonlinearity of the model is verified by two examples.Other two examples show that the wave breaking and wet-dry boundary are well simulated.

关 键 词：双层Boussinesq模型 破碎 增水 干湿边界 

分 类 号：O353.2[理学—流体力学]