中国舰船研究2016，Vol.11Issue(2)：12-20,9.DOI:10.3969/j.issn.1673-3185.2016.02.003
通风模式对住舱人员咳嗽液珠扩散过程的影响
Influences of ventilation modes on the coughing droplet dispersion process in a cruise cabin
摘要
Abstract
Aiming at problem of the high infection rate of respiratory diseases on cruise ships and the corre⁃sponding lack of quantitatively research,the Computational Fluid Dynamics(CFD)method is adopted in this paper to analyze the droplet transmission and dispersion process coughed by an infected passenger ac⁃commodated in an enclosed cabin quantitatively. The air flow equation is solved by solving the unsteady Reynolds averaged Navier-Stokes equations while the Eulerian model is used to simulate the coughed drop⁃let dispersion. The controlling effects for reducing the droplet concentration are also investigated under vari⁃ous conditions of changing ventilation modes and increasing ventilation rates. The results show that the dis⁃placement ventilation mode is superior to the mixed ventilation mode when increasing the ventilation rate to control the droplet dispersion. The mixed ventilation mode needs at least three air changes to empty the droplet,while the displacement ventilation mode needs only two,and the reduction of averaged droplet concentration obeys exponential distribution. In addition,the sleeping gestures of the infector have big in⁃fluences on the droplet concentration in the breathing zone and inhaled dose of the susceptible.关键词
邮轮住舱/液珠扩散/通风模式/数值模拟Key words
cruise cabin/droplet dispersion/ventilation mode/numerical simulation分类
交通工程引用本文复制引用
郑立捷,许建,吴方良,徐文涛,龙正伟..通风模式对住舱人员咳嗽液珠扩散过程的影响[J].中国舰船研究,2016,11(2):12-20,9.基金项目
人力资源与社会保障部留学人员科技活动择优资助启动类项目 （）
