海上溢油运动数值模拟方法的探讨与改进  

Study and improvement of oil spill simulation methods

作　　者：刘伟峰[1] 孙英兰[1] 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100

出　　处：《华东师范大学学报（自然科学版）》2009年第3期90-97,共8页Journal of East China Normal University(Natural Science)

基　　金：青岛市海洋环境保护规划(HB2005001);2008年河口海岸科学全国博士生学术论坛资助

摘　　要：简单总结了海上溢油数值模拟的三种模型方法——油膜扩展模式、对流扩散模式和油粒子模式,并针对目前流行的油粒子模式在油膜自身扩展过程和扩散面积计算方面的不足,根据经典Fay理论对其进行了补充和改进.提出的新模拟方法将溢油运动过程的分为自身扩展和紊动扩散两个阶段,前一阶段根据Fay理论修正模式计算,后一阶段采用油粒子方法模拟,通过"油膜粒子化"技术将两阶段进行衔接.数值模拟实验结果表明,该方法因充分考虑了溢油初始阶段的自身扩展过程,能够弥补油粒子方法的不足,符合溢油在不同时期扩散机制亦不同这一实际情况.Three oil spill models were briefly reviewed. And based on the analysis of problems and defects existing in “Oil Particle” approach, a “Two-Step” method was put forward for oil spill simulation. The method divides oil spill movement into two steps： self-expansion and turbu- lent expansion. The former step was handled by refinement of Fay＇s equations, while the latter was handled by “Oil Particle” approach. Numerical experiment results show the “Two-Step” method can make up the shortcomings of “Oil Particle” approach and accords with the reality that spilled oil has different diffusion mechanism in the process of movement.

关 键 词：溢油 数值模拟 油粒子 改进 

分 类 号：P731.1[天文地球—海洋科学]