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波浪作用下溢油释放影响因素及机理研究 被引量:1

Study on the influencing factors and mechanism of oil spill release under wave action
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摘要 选取0#柴油作为典型污染物,利用波浪水槽进行了一系列平行试验,通过改变波浪参数系统研究了波高、波频等波浪要素对溢油释放强度的影响机制,并进一步建立了释放通量与波陡、波浪紊动强度间的数学关系.结果表明:波浪扰动显著增加了溢油的释放,溢油的释放通量均随着波高、波频的增加而增加,建立释放通量与波陡、波浪紊动强度间的数学回归模型,分别使用指数函数、线性函数进行拟合,相关系数R^(2)>0.96.油滴粒径分布特征表明:进入水体的油滴大多破碎为极小的颗粒,分布范围为3.2~10.0μm,油滴粒径体积频率整体呈单峰分布,且随着波高与波频的增加,油滴粒径分布逐渐趋于稳定. The 0# diesel was selected as a representative pollutant to investigate the effects of wave action on oil release.A series of parallel tests were conducted with a wave tank to systematically examine the influence of wave parameters such as wave height and wave frequency on the release intensity of the oil spill.The mathematic relationship between release flux,wave steepness,and wave turbulence intensity were established.Results show that wave disturbances significantly enhance oil spill release,with the release flux increasing as wave height and wave frequency rise.The mathematical regression models were developed to describe the release flux in relation to wave steepness and turbulent kinetic energy.And the exponential and linear functions were used to fit the models respectively with the correlation coefficient R^(2) value greater than 0.96.The oil droplet size distribution shows that most droplets entering the water are broken into small particles,primarily ranging from 3.2 to 10.0 μm.The volume frequency of the oil droplet sizes exhibites a single-peak distribution,and as wave height and wave frequency increase,the size distribution of the oil droplets becomes more stable.
作者 王晨芳 韩龙喜 张奕 蒋安祺 WANG Chenfang;HAN Longxi;ZHANG Yi;JIANG Anqi(Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education,Hohai University,Nanjing 210098,China;College of Environment,Hohai University,Nanjing 210098,China;College of Environmental Ecology,Jiangsu Open University,Nanjing 210098,China)
出处 《华中科技大学学报(自然科学版)》 EI CAS CSCD 北大核心 2024年第10期130-135,141,共7页 Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金 国家自然科学基金资助项目(51979079)。
关键词 溢油 波浪作用 粒径分布 柴油 油滴 oil spill wave action droplet size distribution diesel fuel oil droplets
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