南京理工大学学报（自然科学版）Issue(5)：556-565,10.DOI:10.14177/j.cnki.32-1397n.2015.39.05.008
水平和下旋气流对初始气溶胶运动的影响
Influence of horizontal and downward airflow on initial aerosol movement
王嘉伟 1李磊 1陆晓霞 2赵守田 1柴明明1
作者信息
- 1. 国民核生化灾害防护国家重点实验室，北京102205
- 2. 清华大学 航空航天学院，北京100084
- 折叠
摘要
Abstract
Considering the droplets collision-breakup model and the effects of horizontal and downward airflow,the flow of aerosol released from the air to the open environment is investigated numerically by applying the discrete phase model of the gas-liquid two-phase flow. The motion char-acteristics of aerosol droplets in open environment are obtained and verified by experiments. The numerical and experimental results show that when the velocities of the horizontal and downward airflow are both small(less than 1 m/s),the ejecting angle is larger than 30°,the initial size of the particles is 100 μm, and the ejecting speed is about 80 m/s, the generated aerosol particles sedimentate to the ground in a short time. When the velocity of the horizontal airflow reaches 3 m/s, aerosol particles released under the same conditions show more difficulty to fall to the ground. In the two above cases,increasing the ejecting angle or the downward airflow velocity can make the aerosol particles sedimentate to the ground more easily.关键词
气液两相流/离散相模型/气溶胶液滴/水平和下旋气流Key words
gas-liquid two-phase flow/discrete phase model/aerosol droplets/horizontal and downward airflow分类
数理科学引用本文复制引用
王嘉伟,李磊,陆晓霞,赵守田,柴明明..水平和下旋气流对初始气溶胶运动的影响[J].南京理工大学学报（自然科学版）,2015,(5):556-565,10.
