發(fā)布時(shí)間：2018-04-18 16:48

  本文選題：礁冠寬度 + 波浪破碎　； 參考：《海洋通報(bào)》2017年03期

【摘要】：通過物理模型實(shí)驗(yàn)研究岸礁礁冠寬度變化對(duì)礁坪上波浪增水的影響,實(shí)驗(yàn)采用概化的岸礁和梯形礁冠模型,在一系列規(guī)則波工況下分別測(cè)試5種不同寬度的礁冠以及無礁冠模型。實(shí)驗(yàn)結(jié)果表明:礁冠寬度越大,波浪破碎造成的能量衰減越劇烈;礁冠的存在使礁坪上的波浪增水增大,且礁冠寬度越大,增水值越大;增水隨礁冠水深的增大而減小,并引入了一對(duì)無量綱參數(shù)合理地描述了入射波波要素對(duì)增水的影響;運(yùn)用文獻(xiàn)中基于能量守恒的理論模型進(jìn)一步研究了礁冠寬度對(duì)增水的影響,并給出模型中的礁形參數(shù)與實(shí)測(cè)的礁冠相對(duì)寬度間的經(jīng)驗(yàn)關(guān)系式;通過分析同一礁冠水深控制下,相對(duì)增水隨著礁冠相對(duì)寬度的變化趨勢(shì),發(fā)現(xiàn)只有在礁冠充分寬的情況下礁冠水深才是控制礁坪上增水的主要因素。
[Abstract]:The effects of the variation of reef crown width on the increase of wave water on the reef floor were studied by physical model experiments, and the generalized reef and trapezoidal reef canopy models were used in the experiment.Five reef crown models with different widths and no reef crown models were tested under a series of regular wave conditions.The experimental results show that the larger the reef crown width, the more severe the energy attenuation caused by wave breakage, and the larger the reef crown width, the larger the water increment value, and the smaller the water increase with the increase of the depth of the reef canopy, and the larger the reef crown width, the greater the water increase value, and the larger the reef crown width is, the greater the water increase value is.A pair of dimensionless parameters are introduced to describe reasonably the influence of incident wave elements on water increase, and the influence of reef crown width on water addition is further studied by using the theoretical model based on energy conservation in literature.The empirical relation between the reef parameters and the measured relative width of the reef crown is given, and the trend of the relative increase of water with the relative width of the reef crown is analyzed by analyzing the control of the water depth of the same reef crown.It is found that only when the reef canopy is wide enough, the depth of the reef canopy is the main factor to control the increase of water on the reef.
【作者單位】： 長(zhǎng)沙理工大學(xué)水利工程學(xué)院;大連理工大學(xué)海岸和近海工程國(guó)家重點(diǎn)實(shí)驗(yàn)室;湖南省水沙科學(xué)與水災(zāi)害防治重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(51309035;51239001) 高等學(xué)校博士學(xué)科點(diǎn)科研基金新教師類(20134316120004) 大連理工大學(xué)海岸和近海工程國(guó)家重點(diǎn)實(shí)驗(yàn)室開放課題基金(LP1510) 長(zhǎng)沙理工大學(xué)研究生科研項(xiàng)目(CX2015SS07)
【分類號(hào)】：P731.2;P756.8

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