摘要
针对新冠疫情下座舱内乘客因气流组织分布而产生交叉感染问题,以宽体客机座舱为对象,研究了座舱内COVID-19病毒的传播特性,并提出了人体微环境控制方法来抑制病毒在座舱内的传播。采用拉格朗日方法模拟了座舱旅客呼出带病毒飞沫,揭示了座舱内病毒传播轨迹和分布特性,分析了不同送风方式、送风速度以及人体微环境控制技术对座舱内病毒颗粒传播特性的影响。提出了相对暴露值量化不同位置乘客被病毒飞沫污染程度。结果表明:送风速度对座舱内病毒飞沫传播的影响相对较小,顶/侧送风的组合送风方式可有效降低病毒飞沫的扩散范围;在座舱上方增加气幕带送风式的人体微环境控制方法,有效降低了舱内病毒飞沫浓度,减小了人员交叉感染风险,相邻位置乘客感染的相对暴露值降低了65%,其他位置乘客相对暴露值降低约90%。
Under the COVID-19 epidemic,in order to reduce the mutual infection among cabin passengers,the propagation characteristics of COVID-19 virus and the airflow organization in the cabin of wide-body commercial aircraft were studied in this paper,and a personalized mini-environment control technology was proposed to suppress the transmission of the virus in the cabin.The Lagrangian method was used to simulate the virus droplets exhaled by a passenger in the cabin,revealing the transmission trajectory and distribution characteristics of virus particles in the cabin.The effects of different air supply modes,air supply velocity and personalized mini-environment control technology on the propagation characteristics of virus particles in the cabin were studied.The impact of virus droplets on passengers in different positions was quantitatively analyzed by relative exposure value.The results show that the influence of different air supply velocity on virus droplet transportation in cabin can be ignore,but the combination of top and side air supply can effectively reduce the spread range of virus droplet.By adjusting the personalized mini-environment and adding air curtain supply method,the concentration of virus droplets in the cabin can be effectively reduced,and the risk of cross-infection can be reduced.The relative exposure value of passengers in adjacent positions can be reduced by 65%,and that of passengers in other positions by about 90%.
作者
李佩
孙建红
孙智
CHANFIOU Ahmed Mboreha
LI Pei;SUN Jianhong;SUN Zhi;CHANFIOU Ahmed Mboreha(Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《民用飞机设计与研究》
2022年第4期127-137,共11页
Civil Aircraft Design & Research
关键词
人体微环境控制
相对暴露值
病毒传播
COVID-19
宽体客机座舱
personalized mini-environment control
relative exposure value
virus propagation characteristics
COVID-19
wide-body commercial aircraft cabin
