环境工程学报2018，Vol.12Issue(4)：1156-1163,8.DOI:10.12030/j.cjee.201709220
蒸汽相变作用下不可溶PM10增长性能的数值模拟
Numerical simulation of growth performance of insoluble PM10 by vapor heterogeneous condensation
摘要
Abstract
Current numerical simulation of the condensation growth of particles ignores the effects of collision.In order to supplement it,using numerical simulation,analyze the influences of initial vapor saturation,residence time,initial particle number concentration and initial particle size on the condensation growth by coupling population balance model (PBM) and Eulerian multiphase model,via introduction of the aggregation kernel function and the condensation growth rate function by the user-defined functions (UDF) on the basis of relevant research.Results show that the greater the initial vapor saturation is,the greater the final particle size is after the condensation growth.The residence time extension can promote the condensation growth of the particles in a certain range.The increase of the initial particle number concentration is adverse to the condensation growth of the particles.The smaller the initial particle size is,the better the particle condensation growth performance is and the more obvious the effect of heterogeneous condensation is.The simulated results are consistent with the experimental results.关键词
不可溶PM10/碰撞/团聚/凝结增长/数值模拟Key words
insoluble PM10/collision/agglomeration/condensation growth/numerical simulation分类
资源环境引用本文复制引用
刘定平,秦方博,黄俊钦,罗伟乐..蒸汽相变作用下不可溶PM10增长性能的数值模拟[J].环境工程学报,2018,12(4):1156-1163,8.基金项目
国家自然科学基金资助项目(51676072) （51676072）
广州市科技计划项目(201604020130) （201604020130）
