论文标题
乘用车内部的气流及其对空中疾病传播的影响
Airflows inside passenger cars and implications for airborne disease transmission
论文作者
论文摘要
通过小滴和气溶胶（含有病毒，细菌等）的运输来促进高度感染性呼吸道疾病，包括SARS-COV-2，这些疾病的传播促进了个人的呼吸，这些疾病是由个体呼吸的，并且可以在限制环境中长时间悬浮在空中。乘用车舱代表着一种这样的情况，在这种情况下，病原体传播的风险升高。在这里，我们通过数值模拟在模型汽车几何形状内的空气传输途径的数值模拟，用于各种通风配置，代表了开放和封闭式窗户的不同组合。我们估计了一个非交互式，被动标量的相对浓度和停留时间 - 传染性致病颗粒的代理 - 由机舱内部的湍流充电和扩散。我们的发现表明，创建一种在机舱中行驶，进入居民最远的气流模式可以潜在地减少传输。
Transmission of highly infectious respiratory diseases, including SARS-CoV-2 are facilitated by the transport of tiny droplets and aerosols (harboring viruses, bacteria, etc.) that are breathed out by individuals and can remain suspended in air for extended periods of time in confined environments. A passenger car cabin represents one such situation in which there exists an elevated risk of pathogen transmission. Here we present results from numerical simulations of the potential routes of airborne transmission within a model car geometry, for a variety of ventilation configurations representing different combinations of open and closed windows. We estimate relative concentrations and residence times of a non-interacting, passive scalar -- a proxy for infectious pathogenic particles -- that are advected and diffused by the turbulent airflows inside the cabin. Our findings reveal that creating an airflow pattern that travels across the cabin, entering and existing farthest from the occupants can potentially reduce the transmission.
