波浪破碎下油滴粒径分布理论模型研究

孙宝楠; 袁业立; 韩磊; 杨永增; 连展

doi:10.3969.issn.0253-4193.2014.09.004

波浪破碎下油滴粒径分布理论模型研究

doi: 10.3969.issn.0253-4193.2014.09.004

1.
中国海洋大学海洋环境学院,山东青岛 266100;国家海洋局第一海洋研究所,山东青岛 266061;海洋环境科学和数值模拟国家海洋局重点实验室,山东青岛 266061
2.
国家海洋局第一海洋研究所,山东青岛 266061;海洋环境科学和数值模拟国家海洋局重点实验室,山东青岛 266061

基金项目: 国家高科技研究发展计划(863)(2013AA09A506);国家海洋局第一海洋研究所基本科研业务费专项资金项目(GY0212148,GY0212181)。

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- 收稿日期: 2013-12-26
- 修回日期: 2014-04-19

On theoretical models for oil droplets size distribution under the influence of surface wave breaking

1.
Laboratory of Physical Oceanography,Ocean University of China,Qingdao 266100,China;First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China;Key Lab of Marine Science and Numerical Modeling,State Oceanic Administration,Qingdao 266061,China
2.
First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China;Key Lab of Marine Science and Numerical Modeling,State Oceanic Administration,Qingdao 266061,China

摘要

摘要: 海上溢油在波浪破碎的情况下经常会形成油滴，本文讨论了油滴形成的可能机制，根据量纲分析瑞利法建立了油滴卷入率与能量耗散率、卷入深度等破碎统计物理量的关系。基于量纲分析Π定理并根据毛细数、无量纲卷入时间与粘度比的实验关系，导出了油径谱的理论模型。初步结果表明，理论谱斜率-2.29与观测谱斜率-2.3符合良好，剪切率、表面张力、油滴半径、油和水的黏度等因素是影响油滴总数的主要原因。
- 量纲分析法 /
- 卷入率 /
- 油径谱 /
- 波浪破碎统计量
Abstract: Marine oil spill often forms oil droplets in stormy conditions.. Based on the dimensional analysis Rayleigh method,the relationship is established between entrainment rate of oil droplet and statistical physical quantities such as the energy dissipation rate,intrusion depth et al. An expression of size spectrum of oil droplets is derived based on Π theorem and relationship between capillary number,the dimensionless intrusion time and viscosity ratio. Preliminary results show that the slope of the derived spectrum is-2.29,which agrees well with the measured slope-2.3 in laboratory. Shear rate,surface tension,droplet radius,oil and water viscosity is the main factors controlling the total number of the oil droplets.
- dimensional analysis /
- entrainment rate /
- size spectrum of oil droplets /
- surface wave breaking statistics

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参考文献(28)

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波浪破碎下油滴粒径分布理论模型研究

doi: 10.3969.issn.0253-4193.2014.09.004

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On theoretical models for oil droplets size distribution under the influence of surface wave breaking

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波浪破碎下油滴粒径分布理论模型研究

doi: 10.3969.issn.0253-4193.2014.09.004

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On theoretical models for oil droplets size distribution under the influence of surface wave breaking

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