大气颗粒物扩散和化学转化过程的数值研究  

Numerical Study on Diffusion and Chemical Conversion of Aerosol Particles

作　　者：邓佳佳[1] 丁珏[2] 翁培奋[2] 杜云贵 

机构地区：[1]中电投远达环保工程有限公司,重庆400060 [2]上海大学上海市应用数学和力学研究所,上海200072

出　　处：《上海大学学报（自然科学版）》2008年第4期418-422,共5页Journal of Shanghai University:Natural Science Edition

基　　金：国家科技支撑计划资助项目(2007BAC24B00)

摘　　要：大气颗粒物是大气中存在的各种固态和液态颗粒物的总称.以液态颗粒物为研究对象,建立Euler-Lagrange多相流运动模型、对流传质模型及颗粒内部化学反应模型,基于有限体积法和SIMPLE算法对大气环境中液体颗粒物的扩散,气态污染物SO2在气、液相的传质以及液相内部化学反应过程进行数值研究,并数值分析3种不同粒径大小的液态颗粒物沉降及气态污染物的对流传质特性,为污染物控制和去除措施的制定提供理论依据.Aerosol particles contain solid-state and liquid-state particles. In this paper, an Euler-Lagrange model, a mass transfer model and a chemical conversion model are established. Based on the finite volume method and the SIMPLE algorithm, the liquid-state particles diffusion in air, mass transfer between two phases, and the chemical reactions in particle are simulated. The characteristics of particle transport and the mass transfer between two phases for three particles with different radii are analyzed numerically, which provides a theoretical basis for finding measures of controlling and removing pollutants.

关 键 词：液态颗粒物 气态污染物 对流传质 化学反应 

分 类 号：O359[理学—流体力学]