考虑蒸发、溶解和生物降解效应的油粒子模型  

An Improved Oil Particle Model Based on Effect of the Evaporation,Dissolution and Biodegradation

作　　者：王琰[1] 程林[1] 陈奇良[1] 袁燕[1] 孙杨[1] 

机构地区：[1]河海大学环境学院,南京210098

出　　处：《科学技术与工程》2014年第9期118-121,159,共5页Science Technology and Engineering

摘　　要：针对油粒子模型仅考虑油粒子的随流输运、随机游走过程而忽略溢油风化作用的缺陷,对现有模型进行了修正,建立了考虑蒸发、溶解、生物降解效应的改进的油粒子模型。构造典型案例,对改进前、后油膜厚度预测结果进行了对比分析,结果表明,油膜厚度受溢油风化过程影响较为显著;对于不同规模的溢油量,改进前后油膜厚度差值随着溢油量的增加逐渐增大;对于相同规模的溢油量,改进前后预测厚度差值由中心向四周呈减小趋势。The conventional oil particle model only takes advection process and random walk process of particles into account while ignoring the weathering effect. In this technical note, an improved oil particle model that consid- ering effect of the evaporation, dissolution and biodegradation is established based on the conventional one. Through the typical case of a model test, the results of oil film thickness before and after improvement are analyzed. The simulation results show that the oil film thickness is largely affected by the weathering process. For the different oil spill volume, the oil film thickness difference between the results of the conventional and the improved oil parti- cle model is gradually increased with the increase of oil spill volume. For the same oil spill volume, the oil film thickness difference between the results of the conventional and the improved oil particle model shows the trend of decrease from the centre out to the periphery.

关 键 词：油粒子 溢油量 油膜厚度 风化 

分 类 号：X55[环境科学与工程—环境工程]