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感潮河网溢油归宿的数值模拟研究
引用本文:李彤,李适宇.感潮河网溢油归宿的数值模拟研究[J].环境科学学报,2012,32(6):1424-1435.
作者姓名:李彤  李适宇
作者单位:中山大学环境科学与工程学院,广州,510275
基金项目:广州市环境保护局科技项目(No. 2007研发01)
摘    要:基于拉格朗日油粒子模型、溢油风化模型以及三维水动力、泥沙和吸附质模型构建了溢油双层数学模型.模型不仅能够模拟油膜的运动轨迹、岸边吸附与冲刷、油品性质变化过程,而且通过耦合泥沙吸附及沉积动力学过程,能够更加客观地模拟溢油从水体向底泥环境的迁移过程,更全面地反映溢油在环境中的归宿.此外,本文以假设溢油事故为背景,模拟和分析了洪、枯季节条件下珠江广州段溢油事故对河网陆地边界、河网水质及底泥环境的影响.

关 键 词:溢油  归宿  感潮河网  悬浮泥沙  数值模拟
收稿时间:2011/8/15 0:00:00
修稿时间:2011/10/21 0:00:00

Numerical simulation of fate of oil spill in tidal river-network
LI Tong and LI Shiyu.Numerical simulation of fate of oil spill in tidal river-network[J].Acta Scientiae Circumstantiae,2012,32(6):1424-1435.
Authors:LI Tong and LI Shiyu
Institution:School of Environmental Science and Engineering, Sun Yat-sun University, Guangzhou 510275;School of Environmental Science and Engineering, Sun Yat-sun University, Guangzhou 510275
Abstract:We developeda double-layer oil spill model based upon Lagrangian particle tracking, oil spill emulsion and 3D hydrodynamic, sediment transport and adsorption models. The model can simulate movement of oil slicks, land adhesion and re-suspension, and oil property changes. Coupled with suspended sediment adsorption / deposition processes, it can also simulate the transport of oil from water column into sediment bed so as to calculate the complete fate of oil spills more comprehensively. Based on hypothetic oil spill accidents, two spill scenarios under dry and flood seasons in Guangzhou section of the Pearl River were simulated to evaluate the influence of an accident upon river shorelines, water quality and sediment bed.
Keywords:oil spill  fate  tidal river-network  suspended sediment  numerical simulation
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