海洋溢油数值模拟中相关参数敏感性分析  

Ensitivity analysis of the related parameters in numerical simulation of oil spill

作　　者：王义刚[1] 王时悦 朱嫕 黄惠明[1] 

机构地区：[1]河海大学海岸灾害及防护教育部重点实验室,江苏南京210098 [2]上海市水利工程设计研究院,上海200061

出　　处：《海洋环境科学》2013年第6期930-933,共4页Marine Environmental Science

基　　金：国家"十二五"科技支撑计划国家科技支撑计划(2012BAB03B01);河海大学中央高校基本科研业务费项目(2011B06014);南京水利科学研究院中央级公益性科研院所基本科研业务费专项(YN912001);江苏省自然科学基金青年基金项目(BK2012411)

摘　　要：以可能发生的海洋溢油事故为研究对象,结合二维水动力模型,以"油粒子法"为基本方法,建立二维溢油模型,对扩散系数和蒸发系数的取值进行敏感性分析得到:①油膜面积随扩散系数增大而增大,而且在不同扩散系数取值下,油膜扩延面积比近似于一个定值;②蒸发量随蒸发系数的取值不同,呈现不同的增长趋势;但对于某一油品来说,虽然过程中蒸发速率略有快慢,但最终趋于稳定的蒸发总量是一定的。研究结果为海洋溢油的模拟和预测提供参考。Considering the oil spill accident possiblely happened, based on 2- dimensional hydrodynamic model, using the method of oil spill, established 2-dimensional oil spill model, simulating the influence of diffusion coefficient and evaporation coefficient to oil spill in different conditions. Conclusions gained are as follows： Area of oil film increases with the diffusion coefficient, and when taken different diffusion coefficient, the ratio of oil film spread area approximate to a fixed value;When taken different evaporation coefficient , the evaporation grows differently ; for one kind of oil, even the speed of evaporation is different, but in the end the evapo ration tends to be a fixed value. These results provide reference for the simulation and prediction of oil spill.

关 键 词：海洋溢油 数值模拟 扩散系数 蒸发系数 

分 类 号：X55[环境科学与工程—环境工程]