Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/32536
Title: Transient CFD simulation of the respiration process and inter-person exposure assessment
Authors: Gao, N
Niu, J 
Issue Date: 2006
Source: Building and environment, 2006, v. 41, no. 9, p. 1214-1222
Abstract: It is known that the person-to-person spreading of certain infectious diseases is related with the transmission of human exhaled air in the indoor environments, and this is suspected to be the case with the severe acute respiratory syndrome (SARS) outbreak. This paper presents the numerical analysis of the human respiration process and the transport of exhaled air by breathing, sneezing, and coughing and their potential impact on the adjacent person in a modeled room with displacement ventilation. In order to account for the influence of the thermal plume around the human body, a three-dimensional computational thermal manikin (CTM) with an accurate description of body geometry was applied. Some of the results were compared with those from former simulations and experiments. It was found that personal exposure to the exhaled air from the normal respiration process of other persons is very low in a modeled room with displacement ventilation. Personal exposure to pollution caused by sneezing or coughing is highly directional. When two occupants face each other the cross-infection may happen due to the long transport distance of the exhalation.
Keywords: Computational thermal manikin
Exhalation
Human body
Human exposure
Inhalation
Publisher: Pergamon Press
Journal: Building and environment 
ISSN: 0360-1323
EISSN: 1873-684X
DOI: 10.1016/j.buildenv.2005.05.014
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