水面有限长油膜下油滴浓度分布及其污染带的数值计算  

Concentration distribution of oil droplets beneath a finitely-long oil slick at water surface and pollution zone

作　　者：武周虎[1] 尹海龙[1] 

机构地区：[1]青岛建筑工程学院环境工程系,山东青岛266033

出　　处：《水动力学研究与进展（A辑）》2001年第4期481-486,共6页Chinese Journal of Hydrodynamics

基　　金：教育部高等学校骨干教师资助计划资助项目

摘　　要：本文在分析了围油栏上、下游水下油滴形成、输移扩散和上浮特征后 ,给出油滴输移扩散方程合理的求解条件 ,建立了四点差分格式 ,进行了数值计算和验证。按照正交试验表L8(2 5)进行了数值试验。经正交直观分析 ,采用因次分析和曲线拟合方法得到油滴污染带深度(hmax)、相应点纵向坐标 (xc)和反映下游 x >L时水面油浓度变化规律的参数 (α,n)This paper aims at examinig the behavior of oil, droplets beneath an oil slick at water surface confined by a floating oil barrier in its upper and lower reaches. By analyzing the features of oil droplet formation, transport, diffusion and floating, the oil droplet transport and diffusion equation was established, the boundary condition was given and then the fourpoint difference form was worked out, with which numerical computation was conducted. According to the orthogonal experiment table L 8(2 5), a numerical experiment was carried out. On the basis of the direct analysis of the orthogonal experiment, from dimensional analysis and curve fitting, for determining the pollution zone in depth of oil droplets beneath water surface and the corresponding longitudinal coordinate, an empirical formula was resulted for parameters describing the changing law of oil concentration on water surface in the lower reach.

关 键 词：油滴扩散 浓度分布 污染带 数值计算 油滴输移扩散方程 正交实验 因次分析 溢油 水环境 石油污染 海洋 

分 类 号：X55[环境科学与工程—环境工程]