消浪曲面对孤立波消浪性能的物理模型试验研究  

Experimental study on physical model of wave elimination performance ofparabolic wave absorber for solitary waves

作　　者：陈思桦 严士常[1,2] 付睿丽 王岗[1,2] 郑金海[1,2] CHEN Sihua;YAN Shichang;FU Ruili;WANG Gang;ZHENG Jinhai(Key Laboratory of Ministry of Education for Coastal Disaster and Protection,Hohai University,Nanjing,210098,China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学,海岸灾害及防护教育部重点实验室,江苏南京210098 [2]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《水运工程》2024年第12期20-27,123,共9页Port & Waterway Engineering

基　　金：国家自然科学基金项目(52201319);江苏省自然科学基金项目(BK20220082)。

摘　　要：通常曲面消浪装置能够在较小的空间范围内达到良好的消浪效果,是目前港池或水槽波浪试验中常用的消浪结构。现有研究均基于该装置对规则波或随机波等短波的消浪效果,对孤立波这类长波的消浪性能尚不清楚。在河海大学L形风浪流港池开展了栅格抛物线型消浪曲面对孤立波消浪性能的物理模型试验。结果表明:其消浪性能与相对波高密切相关。对于栅格消浪曲面,相对波高在0.07~0.38时,经消浪曲面直接反射的反射系数为0.10~0.17,透过栅格被港池右侧内壁反射的反射系数为0.17~0.44。无栅格消浪曲面的反射系数为0.34~0.64。基于试验结果建立有、无栅格曲面孤立波反射系数的计算关系,为波浪物理模型试验的设计与分析提供依据。The Parabolic wave absorber can achieve a good wave elimination effect in a small space,making it a commonly used wave elimination structure in basins or wave tanks.Existing studies have predominantly focused on the wave reduction effects of these devices on regular waves or random waves,which are short waves.However,the wave reduction performance for long waves such as solitary waves is still unclear.In this paper,a physical model test on the wave elimination performance of parabolic wave absorber with grids for solitary wave is carried out in the L-type basin of Hohai University.The results show that the wave elimination performance of the parabolic wave absorber for solitary waves is closely related to the relative wave height.For the grid wave-absorbing surface,the reflection coefficient directly from the wave-absorbing surface for relative wave heights between 0.07 and 0.38 ranges from 0.10 to 0.17.The reflection coefficient for waves transmitted through the grids and reflected by the right inner wall of the flume varies between 0.17 and 0.44.The reflection coefficient of the wave-absorbing surface without grids is in the range of 0.34 to 0.64.Based on the experimental results,the relationship between the reflection coefficients of parabolic wave absorber with and without perforated grids for solitary waves was established to provide a basis for the design and analysis of wave tests.

关 键 词：L形港池 抛物线型消浪曲面 栅格 孤立波 反射系数 

分 类 号：U65[交通运输工程—港口、海岸及近海工程]