A computational study of expiratory particle transport and vortex dynamics during breathing with and without face masks
- Title
- A computational study of expiratory particle transport and vortex dynamics during breathing with and without face masks
- Author
- 강석구
- Issue Date
- 2021-06
- Publisher
- American Institute of Physics Inc.
- Citation
- Physics of Fluids, v. 33, NO. 6, article no. 66605, Page. 1-10
- Abstract
- We present high-fidelity numerical simulations of expiratory biosol transport during normal breathing under indoor, stagnant air conditions with and without a facile mask. We investigate mask efficacy to suppress the spread of saliva particles that is underpinnings existing social distancing recommendations. The present simulations incorporate the effect of human anatomy and consider a spectrum of saliva particulate sizes that range from 0.1 to 10 μm while also accounting for their evaporation. The simulations elucidate the vorticity dynamics of human breathing and show that without a facile mask, saliva particulates could travel over 2.2 m away from the person. However, a non-medical grade face mask can drastically reduce saliva particulate propagation to 0.72 m away from the person. This study provides new quantitative evidence that facile masks can successfully suppress the spreading of saliva particulates due to normal breathing in indoor environments. © 2021 Author(s).
- URI
- https://aip.scitation.org/doi/10.1063/5.0054204https://repository.hanyang.ac.kr/handle/20.500.11754/176643
- ISSN
- 1070-6631;1089-7666
- DOI
- 10.1063/5.0054204
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML