论文标题
冠状病毒在沉积在固体表面上的呼吸液滴中生存的可能性
Likelihood of survival of coronavirus in a respiratory droplet deposited on a solid surface
论文作者
论文摘要
我们预测并分析了来自COVID-19感染受试者的呼吸液滴的干燥时间，这是感染另一受试者的关键时机。液滴的干燥是通过扩散限制的蒸发模型预测的，该模型用于放置在部分润湿表面上的连接线的连接线。考虑了液滴体积，接触角，环境温度和湿度的变化。我们根据几种条件下液滴的寿命分析了液滴中存在的病毒存活的机会，并发现病毒生存的机会受到这些参数的每个参数的强烈影响。使用该模型计算的液滴内部的剪切应力的大小不足以消除病毒。我们还探索了液滴的干燥时间与五个不同城市的Covid-19的增长速度之间的关系，并发现它们的相关性较弱。
We predict and analyze the drying time of respiratory droplets from a COVID-19 infected subject, which is a crucial time to infect another subject. The drying of the droplet is predicted by diffusion-limited evaporation model for a sessile droplet placed on a partially-wetted surface with a pinned contact line. The variation of droplet volume, contact angle, ambient temperature, and humidity are considered. We analyze the chances of the survival of the viruses present in the droplet, based on the lifetime of the droplets in several conditions, and find that the chances of survival of the virus are strongly affected by each of these parameters. The magnitude of shear stress inside the droplet computed using the model is not large enough to obliterate the virus. We also explore the relationship between the drying time of a droplet and the growth rate of the spread of COVID-19 for five different cities, and find that they are weakly correlated.
