CFD prediction of bioaerosol dynamics in a concept air sanitiser for space applications

SAILOR Moon is a concept air sanitiser for closed space environments. There is indeed an increasing interest in the development of potentially inhabited outposts in space, such as the forecasted NASA's Lunar Gateway, as well as on the Moon and Mars surfaces. The health monitoring of astronauts is paramount in the development of such missions. The idea is to collect pathogens emitted in the closed environment by astronauts, especially through bioaerosol, and use the well-known principle of Ultraviolet Germicidal Irradiation (UVGI) through UVC light for pathogen inactivation. This work focuses on the method for predicting the device's bioaerosol dynamics. The method mainly relies on Computational Fluid Dynamics (CFD) and optical simulations. In this paper, the CFD simulations performed are presented, along with some analysis results and their implications.