摘要
本文基于CFD方法对箱式挡浪结构透空堤的消浪性能开展数值模拟研究,对比箱式和立板式结构的透射、反射及粘性流引起的耗散系数,重点分析波浪经过箱式结构时不同水平底板位置对透射、反射及耗散的影响、及波浪经过箱式挡浪结构时流场变化情况。研究结果表明,较之传统的立板式挡浪结构,箱式结构具有较小的透射系数、较大的反射系数;分析粘性流引起的耗散发现,立板式挡浪结构主要由波浪震荡引起耗散,箱式挡浪结构主要由平板约束水质点的竖向运动引起耗散;分析流场图得到,当波浪经过箱式挡浪结构时大部分被反射,少部分透射进入的波浪受到水平底板的约束,波高减小且趋于平稳,达到更好的消浪效果。
In this paper, the numerical simulation of wave dissipation performance of a box-type wave-retaining structure permeable breakwater was carried out based on CFD method. The transmission, reflection and dissipation coefficients caused by viscous flow of box-type and vertical plate structures were compared. The influence of different horizontal bottom plate positions on transmission, reflection and dissipation at the time when waves passed through box-type structure and the change of flow field at the time when waves passed through box-type wave retaining structure were analyzed. The results show that the box structure has a smaller transmission coefficient and a larger reflection coefficient than those of the traditional vertical plate structure, the dissipation caused by viscous flow is mainly caused by the wave oscillation in the vertical plate structure, and the dissipation is caused by the vertical movement of the water point restrained by the plate in the box structure. Analysis of the flow field diagram shows that, when the waves pass through the box-type wave-retaining structure, most of them are reflected, and only a small part of the transmitted waves are constrained by the horizontal bottom plate, and that the wave height decreases and tends to be stable, resulting in a better wave dissipation effect.
作者
桂劲松
夏曦
GUI Jin-song;XIA Xi(Dalian Ocean University,Dalian 116023,China)
出处
《船舶力学》
EI
CSCD
北大核心
2023年第2期227-237,共11页
Journal of Ship Mechanics
基金
辽宁省重点研发计划项目(2018228003)。
关键词
箱式挡浪结构
OPENFOAM
透射系数
反射系数
流场
box-type wave retaining structure
OpenFoam
transmission coefficient
reflection coefficient
flow field
