欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
海上溢油的双层数学模型将泄漏在海域中的溢油考虑为表层油膜和分布在整个水体中的悬浮油滴两层组成。采用Lagrangian追踪法模拟油膜的输移扩散。在此方法中，油膜可用大量的小油滴表示，对每个油滴都规定随时间而变化的坐标系，油滴的运动受到风、潮流和周围油的浓度影响。油的迁移过程包括对流、扩展、湍动扩散、附着在岸边以及沉降到海底等过程．转化过程包括挥发、溶解、乳化等。此外，光化学反应、生物降解能够改变油的特征以及减小油的污染，该模型可以用于瞬时和连续溢油的情况，不仅可以用于模拟油，也可以模拟其它与油的密度相近的有害物质的泄漏，水动力学模型采用美国普林斯顿海洋模式（POM）。该溢油模型已应用于渤海海峡突发性溢油事故的模拟与预报。
英文摘要：
A computer model for simulation of oil slick transport in seas by a Lagrangian discrete parcel algorithm is proposed. Oil spilled in a water body, regardless of whether it is originated as a surface or subsurface spill, consists of a floating surface slick and suspended oil droplets in the water column. In this algorithm the oil slick is viewed as a large number of small parcels of equal mass and their discrete path and mass are followed and recorded as functions of time relative to a reference grid system in space. The movement of each parcel in the sea is affected by the windi water current, and concentration of surrounding parcels. The transport of spilled oil is governed by advection, horizontal spreading, turbulent diffusion, evaporation, dissolution, emulsification, the interaction of oil with the shoreline, and sedimentation. In addition, photochemical reactions and biodegradation can also affect the characters of the oil and reduce the amount of oil over a long period of time. The model simulates both continuous and instantaneous oil spills, not only oil spills, but also of other toxic matter. American Princeton Ocean Model is applied in this paper as the hydraulic model. Sample simulations for oil spills in Bohai are presented.
同期刊论文项目
同项目期刊论文
位置：