Commonly used partitions allow aerosols in exhaled air to diffuse into the surrounding space after reaching the partition. To address this critical issue、we devised a novel partition featuring advanced aerosol diffusion prevention capabilities. In our previous study、we conducted thorough numerical analyses and visualization experiments using coughing velocity as a boundary condition to assess the collection rate and flow dynamics of exhaled air. In this study、we expanded our analysis to include talking and sneezing、both of which exhibit significantly higher exhalation rates compared to coughing. Our results confirmed that even during conversations and sneezing、the installation of a small fan within the partition considerably reduced aerosol diffusion into the environment. Notably、quantitative numerical analyses revealed that over 50% of the total exhaled air could be effectively collected during conversations. This finding underscores the effectiveness of the partition with aerosol diffusion prevention features、demonstrating its capability to mitigate aerosol spread even in scenarios where the exhalation rate exceeds that of coughing、thus offering a promising solution for improving air quality in shared spaces.
HORIE et al. (Wed,) studied this question.