数值波浪水槽的造波及消波方法-《集美大学学报（自然科学版）》

文章信息/Info

Title:: Study on Methods of Wave Generation and Absorption in a Numerical Wave Tank

作者:: 李晖1; 2; 3; 何宏舟1; 2; 3; 杨绍辉1; 2; 3; （1.集美大学机械与能源工程学院，福建厦门 361021；2.福建省能源清洁利用与开发重点实验室，〖JZ〗福建厦门 361021；3.福建省清洁燃烧与能源高效利用工程技术研究中心，福建厦门 361021）

Author(s):: LI Hui1; 2; 3; HE Hong-zhou1; 2; 3; YANG Shao-hui1; 2; 3; （1.School of Mechanical and Energy Engineering,Jimei University,Xiamen 361021,China；2.Fujian Province Key Laboratory of Cleaning Energy Utilization and Development,Xiamen 361021,China；3.Cleaning Combustion and Energy Utilization Research Center of Fujian Province，Xiamen 361021,China）

摘要:: 为了提高海洋工程相关问题的研究效率，并为物理造波机的设计提供参考，应用FLUENT软件模拟了数值波浪水槽的造波及消波过程.在模拟中，利用用户自定义函数UDF设置摇板造波机的运动条件，利用动网格技术实现流体运动；通过设置多孔介质区域和添加粘性阻力动量源项的方法消除水槽末端壁面对波浪的反射；采用VOF方法模拟自由表面位置.模拟结果表明：摇板式造波法可以在数值水槽中制造出稳定的线性波，其周期误差较小，可以满足模拟实验的要求；多孔介质加粘性阻力动量源项的消波方法效果较好，基本可以消除水槽末端壁面反射波的影响.

Abstract:: In order to improve the efficiency of solving marine engineering related problems,and to provide reference for the design of the physical wave generator,the FLUENT software was used to simulate the process of wave generation and absorption in a wave tank.In the simulation,the motion conditions of the swinging-plate wave generator were defined by the user defined function UDF and the fluid motion was realized by employing dynamic mesh technology.The reflection of the wave was eliminated by the method of setting porous media area and adding momentum source term of viscous drag force.The VOF method was utilized to simulate the free surface.The simulation results show that the swinging-plate wave generator proposed in this paper can be used to produce a stable linear wave in the numerical flume.The periodic error is small enough to meet the requirements of the simulation experiments.The wave absorption method of momentum source term with a viscous drag force in a porous media area is effective enough to eliminate the reflected wave from the end wall of the tank.