深海环境中溢油输移扩散的初步数值模拟  

Modeling of the transport and diffusion of spilled oil in deepwater environment

作　　者：廖国祥[1] 杨建强[2] 高振会 

机构地区：[1]国家海洋环境监测中心,辽宁大连116023 [2]国家海洋局北海分局,山东青岛266033 [3]国家深海基地管理中心,山东青岛266061

出　　处：《海洋通报》2011年第6期707-712,共6页Marine Science Bulletin

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)

摘　　要：通过对溢油在深海环境中的输移过程及行为特点的分析,初步建立基于拉格朗日积分法的深海溢油模型。该模型除了能够模拟油气混合物在真实深海环境中的共同输移与分离输移扩散过程,还考虑了石油溶解、气体溶解、天然气水合物形成与分解等行为变化对溢油运动轨迹的影响。应用该模型初步数值模拟了一次实际深海溢油试验,结果表明溢油在水下的空间分布模拟结果与现场监测数据符合较好。Based on the analysis of the behaviors of oil and gas spilled in deepwater environment, a deepwater oil spill model was developed based on the Lagrangian integral method. The model can simulate the transport and diffusion processes of oil and gas mixture in deepwater environment, including the oil and gas co-transport, gas separation from a bent oil/gas plume, etc. The behaviors of oil dissolution, gas dissolution, formation and decomposition of gas hydrate in deepwater environment and their effects on the movements of spilled oil were also taken into account in the model. The model was used to simulate an actual deepwater oil spill experiment in the North Sea, and the results showed that the simulated spatial distributions of spilled oil in water column were in good agreement with the field observed data.

关 键 词：深海溢油 油气混合物 输移扩散 天然气水合物 数值模拟 

分 类 号：X55[环境科学与工程—环境工程]