Numerical analysis of ventilation effects on removal of droplets and droplet nuclei in indoor space

Abstract

Respiratory diseases can be spread via droplets and droplet nuclei ejected from the infected person due to breathing, speaking, coughing, and sneezing. The droplet nuclei may remain suspended for a long time in the air causing an airborne infection. The present study analyzed the dispersion characteristics of droplets and droplet nuclei and examined the influence of indoor ventilation on their removal. The results from CFD analysis of the spreading path of droplets and droplet nuclei are expected to be utilized for establishing a proper ventilation system and its optimal operating conditions, in order to reduce the risk of respiratory infection.