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Article

On the Effect of the Respiratory Droplet Generation Condition on COVID-19 Transmission

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Mechatronics Engineering Program, Faculty of Engineering and Natural Science, Sabanci University, Tuzla 34956, Istanbul, Turkey
2
Nanotechnology Research and Application Center, Sabanci University, Tuzla 34956, Istanbul, Turkey
3
Center of Excellence for Functional Surfaces and Interfaces for Nano-Diagnostics (EFSUN), Sabanci University, Orhanli, Tuzla 34956, Istanbul, Turkey
4
Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, SE 141 57 Stockholm, Sweden
*
Authors to whom correspondence should be addressed.
Fluids 2020, 5(3), 113; https://doi.org/10.3390/fluids5030113
Received: 19 June 2020 / Revised: 8 July 2020 / Accepted: 14 July 2020 / Published: 16 July 2020
Coronavirus (COVID-19) is a highly infectious viral disease and first appeared in Wuhan, China. Within a short time, it has become a global health issue. The sudden emergence of COVID-19 has been accompanied by numerous uncertainties about its impact in many perspectives. One of major challenges is understanding the underlying mechanisms in the spread of this outbreak. COVID-19 is spread similar to the majority of infectious diseases through transmission via relatively large respiratory droplets. The awareness of the dispersal of these droplets is crucial in not only improving methods for controlling the dispersion of COVID-19 droplets, but also in discovering fundamental mechanisms of its transmission. In this study, a numerical model is developed to study the motion of droplets expelled through the respiratory system. Based on the source of these droplets, different sizes of droplets such as large ones and aerosols, which behave differently in the environment, can be generated. In this regard, diverse sources of droplets, namely breathing, coughing, and sneezing, are considered in this analysis. Besides, the time for a single droplet to fall from a height of 1.8 m is also obtained. The results reveal that the traditional distances suggested by different sources for keeping the social distance are not enough, which is linked to different nature of the droplet generation. View Full-Text
Keywords: coronavirus; COVID-19; CFD; droplet; social distance coronavirus; COVID-19; CFD; droplet; social distance
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MDPI and ACS Style

Shafaghi, A.H.; Rokhsar Talabazar, F.; Koşar, A.; Ghorbani, M. On the Effect of the Respiratory Droplet Generation Condition on COVID-19 Transmission. Fluids 2020, 5, 113. https://doi.org/10.3390/fluids5030113

AMA Style

Shafaghi AH, Rokhsar Talabazar F, Koşar A, Ghorbani M. On the Effect of the Respiratory Droplet Generation Condition on COVID-19 Transmission. Fluids. 2020; 5(3):113. https://doi.org/10.3390/fluids5030113

Chicago/Turabian Style

Shafaghi, Ali H., Farzad Rokhsar Talabazar, Ali Koşar, and Morteza Ghorbani. 2020. "On the Effect of the Respiratory Droplet Generation Condition on COVID-19 Transmission" Fluids 5, no. 3: 113. https://doi.org/10.3390/fluids5030113

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