深水池造波系统数值造波仿真研究

Numerical simulation of wave-generation in a deep tank

造波系统作为哈尔滨工程大学新建多功能深水综合试验水池的重要组成部分,对其进行相关的数值仿真研究具有现实意义.基于摇板式造波机理论和阻尼层消波思想,使用VOF方法,结合RNGk-ε模型,通过求解Navier-Stokes方程,建立了与该深水综合试验水池相应的二维数值波浪水池,对深水池造波机生成二维规则波及不规则波时的情况进行了数值造波仿真,给出了该数值波浪水池的波浪衰减规律,数值计算的结果表明,数值波浪水池内可以长时间地产生稳定的规则波和指定谱型的不规则波,为深水池造波机控制系统调试及水池波形的测量提供了依据.

The wavemaker is an important component of the newly-built integrated deep water test tank at Harbin Engineering University.In order to optimize operating parameters,numerical simulations were run.By solving the Navier-Stokes equation in the computational fluid dynamics（CFD） software FLUENT with the volume of fluid（VoF） method,a wave tank for numerically simulating both 2D regular wave and irregular wave was developed corresponding to the actual tank.This included a rocker-flap wavemaker and damping absorber,combined in the RNG k-ε model.The purpose of simulating the wave tank was to verify the ability of the rocker-flap wavemaker to generate linear regular waves as well as irregular waves.At the same time,characteristics of gradual reductions of the wave were obtained.These tests indicated that stable regular waves and specific irregular waves can be sustained in the wave tank over a significant period of time.The simulation allowed debugging of the control system and measurement of the elevation of the waves that were generated.