Air flow experiments on a train carriage-towards understanding the risk of airborne transmission
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
A series of experiments was undertaken on an intercity train carriage aimed at providing a “proof of concept” for three methods in improving our understanding of airflow behaviour and the accompanied dispersion of exhaled droplets. The methods used included the following: measuring CO2 concentrations as a proxy for exhaled breath, measuring the concentrations of different size fractions of aerosol particles released from a nebuliser, and visualising the flow patterns at cross-sections of the carriage by using a fog machine and lasers. Each experiment succeeded in providing practical insights into the risk of airborne transmission. For example, it was shown that the carriage is not well mixed over its length, however, it is likely to be well mixed along its height and width. A discussion of the suitability of the fresh air supply rates on UK train carriages is also provided, drawing on the CO2 concentrations measured during these experiments.
Date Issued
2021-10-01
Date Acceptance
2021-09-22
Citation
Atmosphere, 2021, 12 (10), pp.1-19
ISSN
2073-4433
Publisher
MDPI AG
Start Page
1
End Page
19
Journal / Book Title
Atmosphere
Volume
12
Issue
10
Copyright Statement
Copyright: © 2021 by the authors.
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000713023500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
aerosol dispersion
airborne transmission
CABIN
COVID-19
Environmental Sciences
Environmental Sciences & Ecology
Life Sciences & Biomedicine
Meteorology & Atmospheric Sciences
Physical Sciences
public transport
QUALITY
Science & Technology
TRANSPORT
ventilation
VENTILATION
Publication Status
Published
Article Number
ARTN 1267
Date Publish Online
2021-09-29