三维波流数值水槽的构建方法  

Three-dimensional wave-current numerical model

作　　者：李勇[1] 林缅[1] 

机构地区：[1]中国科学院力学研究所,环境力学重点实验室,北京100190

出　　处：《清华大学学报（自然科学版）》2010年第6期865-868,886,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(40776057);国家自然科学重点基金资助项目(10532070);中国科学院知识创新工程(KZCX2-YW-212-2)

摘　　要：为了模拟波浪与水流的联合作用,基于Reynolds平均的Navier-Stokes方法,构建了一个三维波流数值水槽。使用该模型对不同出流边界条件进行了对比分析。结果表明:引入合理的入流和出流边界条件,可以保证在计算稳定后,水槽平均水面基本保持不变。垂向时均流速分布的计算结果与实验数据吻合良好。这表明:该波流数值水槽具有较好的波流特性,可用于计算波浪与水流、以及与三维固定结构之间相互作用。A 3-D numerical model was developed based on the Reynolds averaged Navier-Stokes equations（RANS） to simulate the interactions of waves and currents.The model was used to compare the effects of several different boundary conditions for various inflow and outflow boundaries.The results show that the mean water level is usually constant after calculation stabilized using reasonable boundaries.The vertical distributions of the time-average velocity agree well with experimental data.The model accurately predicts the characteristics of the wave-current flows,therefore,it can be used to compute the interactions between waves and current and between wave-current and 3-D fixed structures.

关 键 词：数值波流水槽 波流相互作用 自由出流 数值消波 

分 类 号：TV139.2[水利工程—水力学及河流动力学]