2014
DOI: 10.1111/ina.12109
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Simplified models for exhaled airflow from a cough with the mouth covered

Abstract: This study developed simplified models for predicting the exhaled airflow from a cough with the mouth covered. The proposed models can easily be used to investigate the risk of transmission of airborne infectious diseases in enclosed environments.

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Cited by 61 publications
(53 citation statements)
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“…It could be problematic if the source was able to change the airflow pattern, as in the case of a powerful cough without covering the mouth. Therefore, this study assumed that the mouth was effectively covered when a person was coughing and that, as a result, the influence of the initial momentum from the cough on the receptor's exposure was minimized [12]. Thus, the assumption of a fixed airflow field should be valid in most cases.…”
Section: Airflow and Turbulence Modelmentioning
confidence: 99%
See 1 more Smart Citation
“…It could be problematic if the source was able to change the airflow pattern, as in the case of a powerful cough without covering the mouth. Therefore, this study assumed that the mouth was effectively covered when a person was coughing and that, as a result, the influence of the initial momentum from the cough on the receptor's exposure was minimized [12]. Thus, the assumption of a fixed airflow field should be valid in most cases.…”
Section: Airflow and Turbulence Modelmentioning
confidence: 99%
“…For instance, Li et al [8], Seepana and Lai [9], and Chen et al [10] studied the effects of ventilation parameters on personto-person particle transport using an Eulerian drift flux model. Li et al [11] and Chen et al [12] investigated the effectiveness of covering a cough on reducing the receptor's exposure using an Eulerian method. Hang et al [13] used an Eulerian model to assess the influence of human walking on the transmission of airborne infectious diseases in a six-bed isolation room.…”
Section: Introductionmentioning
confidence: 99%
“…In reality, the airflow pattern in an indoor space is quasi-steady. However, when there is a disturbance such as an occupant's coughing or sneezing the occupant would normally cover his or her mouth, and thus the impact on the airflow pattern would be small (Chen et al 2014). Of course, such an assumption cannot be applied to a major disturbance such as occupants' moving around.…”
Section: Airflow and Turbulence Modelmentioning
confidence: 99%
“…Seepana and Lai (2012) investigated person-to-person exposure due to sneezing in a full-scale chamber with an Eulerian model. Li et al (2012) and Chen et al (2014) applied an Eulerian model to assess the effectiveness of covering a cough in reducing exposure to the coughed particles. Hang et al (2014) studied the effect of human walking on interpersonal exposure to exhaled contaminants in an isolation room using an Eulerian model.…”
Section: Introductionmentioning
confidence: 99%
“…The airflow field was assumed to be steady-state, which corresponds to the scenario in which the mouth is effectively covered during coughing, as a person would usually do. In such cases, the influence of coughing on the airflow field would be minimal (Chen et al 2014). Thus, the assumption of a steady-state airflow field should be valid for most cases.…”
Section: Airflow and Particle Modelmentioning
confidence: 99%