04-18/9311276/007/gb/a/a/a/a/或图片不合法地绑定。进行可以进行可以进行,并且可以使用BioMérieux的待处理和/或属于BioMérieux的注册商标,或者是其附带的票房或票房/或商标的一家,或者是Angement and Argement and Argement/ Angemene/ Angemene/ Angemene/ nistive Andever/ Angemene/ a Indementive and Argeme a的财产, BioMérieux或其子公司之一或其一家公司 /BioMérieuxS.A. 673 620 399 RCS Lyon /在法国 /ThéraRCSLyon B 398 160 242 < / div>印刷可以进行可以进行,并且可以使用BioMérieux的待处理和/或属于BioMérieux的注册商标,或者是其附带的票房或票房/或商标的一家,或者是Angement and Argement and Argement/ Angemene/ Angemene/ Angemene/ nistive Andever/ Angemene/ a Indementive and Argeme a的财产, BioMérieux或其子公司之一或其一家公司 /BioMérieuxS.A. 673 620 399 RCS Lyon /在法国 /ThéraRCSLyon B 398 160 242 < / div>印刷可以进行,并且可以使用BioMérieux的待处理和/或属于BioMérieux的注册商标,或者是其附带的票房或票房/或商标的一家,或者是Angement and Argement and Argement/ Angemene/ Angemene/ Angemene/ nistive Andever/ Angemene/ a Indementive and Argeme a的财产, BioMérieux或其子公司之一或其一家公司 /BioMérieuxS.A. 673 620 399 RCS Lyon /在法国 /ThéraRCSLyon B 398 160 242 < / div>印刷,并且可以使用BioMérieux的待处理和/或属于BioMérieux的注册商标,或者是其附带的票房或票房/或商标的一家,或者是Angement and Argement and Argement/ Angemene/ Angemene/ Angemene/ nistive Andever/ Angemene/ a Indementive and Argeme a的财产, BioMérieux或其子公司之一或其一家公司 /BioMérieuxS.A. 673 620 399 RCS Lyon /在法国 /ThéraRCSLyon B 398 160 242 < / div>印刷
Abstract The COVID-19 pandemic has forced governments around the globe to apply various preventive measures for public health.One of the most effective measures is wearing face masks, which plays a vital role in blocking the transmission of droplets and aerosols.To understand the protective mechanism of face masks, especially in indoor environments, we apply a computational fluid dynamics technique to predict the lifetime of cough droplets.Therefore, we can assess the exposure risk in a ventilated room where an infected individual wears a face mask or not.We focus on the dynamic evaporation and diffusion of droplets in a human- cough process, which is a major cause for the spread of the virus.We find that wearing a face mask can effectively reduce the total mass and Sauter mean diameter of the residual droplets after a single cough.通风室中的病毒液滴的质量降低了201,43,786和307,060次,对应于戴棉面具,外科手术口罩,N95型面罩分别均为80%drops nisements tosements nistive sensens tosent sensens tosent sensens tosents tosents。由于室内气流的影响,液滴被广泛分布。本研究解释了面罩和气流对室内风险的影响,并进一步激发了公共卫生的潜在措施,例如,没有人坐在空气供应范围内