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Study on the initial velocity distribution of exhaled air from coughing and speaking.

Authors
 Soon-Bark Kwon ; Jaehyung Park ; Am Jang ; Gwi-Nam Bae ; Changsoo Kim ; Duck-Shin Park ; Youngmin Cho ; Jaeyoun Jang 
Citation
 Chemosphere, Vol.87(11) : 1260~1264, 2012 
Journal Title
 Chemosphere 
ISSN
 0045-6535 
Issue Date
2012
Abstract
Increasing concerns about the spread of airborne pathogens such as severe acute respiratory syndrome (SARS) and novel swine-origin influenza A (H1N1) have attracted public attention to bioaerosols and protection against them. The airborne pathogens are likely to be expelled from coughing or speaking, so the physical data of the exhaled particles plays a key role in analyzing the pathway of airborne viruses. The objective of this study was to analyze the initial velocity and the angle of the exhaled airflow from coughing and speaking of 17 males and 9 females using Particle Image Velocimetry (PIV) and acrylic indoor chamber. The results showed that the average initial coughing velocity was 15.3 m/s for the males and 10.6 m/s for the females, while the average initial speaking velocity was 4.07 m/s and 2.31 m/s respectively. The angle of the exhaled air from coughing was around 38° for the males and 32° for the females, while that of the exhaled air from speaking was around 49° and 78° respectively. Also, the linear relation between the tested subject's height and their coughing and speaking velocity was shown in this study.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/89941
DOI
10.1016/j.chemosphere.2012.01.032
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Preventive Medicine
Yonsei Authors
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Link
 http://www.sciencedirect.com/science/article/pii/S0045653512000987
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