水下溢油事故污染物输移扩散的数值模拟研究  

Numerical simulation of pollutant transport and diffusion in underwater oil spill

作　　者：廖国祥[1] 高振会 

机构地区：[1]武汉理工大学航运学院,湖北武汉430063 [2]国家深海基地,山东青岛266061

出　　处：《海洋环境科学》2011年第4期578-582,共5页Marine Environmental Science

基　　金：国家海洋局海洋溢油鉴别与损害评估技术重点实验室开放基金(201022);中央高校基本科研业务费专项资金

摘　　要：通过对水下溢油事故特点以及污染物输移过程的分析,建立基于拉格朗日积分方法的三维水下溢油模型。数值计算了污染物在密度均匀、密度分层以及流速分层等水下环境中的扩散和输移行为,模拟结果与实验数据的吻合证明了该模型的准确性和有效性。通过渤海海底输油管道溢油事故的模拟算例研究,结果表明该模型可为水下溢油事故的风险评估、应急响应等实际应用提供理论依据和技术支持。Based on the analysis of the characteristics of different underwater accidents （e. g. pipe line broke up, oil well blowout） and the pollutant transport processes in such spill accidents, a three-dimensional underwater oil spill model was developed using the Lagrangian integral method. The model was used to simulate the pollutant trajectories under different underwater conditions, including the un-stratified stagnant, density stratified and un-stratified flowing environments, and the good agreements with the experiment data were achieved. The result showed thai the model was exact and effective. A simulation example of pipeline oil spill on the seabed was presented. The study results showed that the model can be used as a powerful tool for the risk assessment, emergency response and underwater oil spill accidents.

关 键 词：水下溢油 输移扩散 数值模拟 轨迹预报 

分 类 号：X55[环境科学与工程—环境工程]