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Volume 13
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10.3390/atmos13122050
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Article

Numerical Simulation of the Dispersion of Exhaled Aerosols from a Manikin with a Realistic Upper Airway

by
Jiayu Wei
1,
Hao Xie
1,*,
Xiaole Chen
1,
Xibin Quan
1,
Zhicong Zhang
1,
Xiaojian Xie
1,
Jianping Shi
2 and
Guanghui Zeng
3
1
School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing 210023, China
2
School of Electrical and Automation Engineering, Nanjing Normal University, Nanjing 210023, China
3
RayCage (Zhenjiang) Photoelectric Technology Co., Ltd., Zhenjiang 212021, China
*
Author to whom correspondence should be addressed.
Atmosphere 2022, 13(12), 2050; https://doi.org/10.3390/atmos13122050
Submission received: 20 September 2022 / Revised: 27 November 2022 / Accepted: 6 December 2022 / Published: 7 December 2022
(This article belongs to the Section Air Quality and Health)
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Abstract

Basic analysis of the flow field and aerosol deposition under different conditions when a spreader contains an upper airway tract is important to accurately predict the transmission of virus-laden aerosols. An upper airway was included to simulate aerosol transport and deposition. A flow field was simulated by the Transition SST model for validation. The simulation results show that, in the absence of the upper airway structure, an over-predicted aerosol deposition rate will occur. Higher upper-stream air velocity enhanced the intensity but added complexity to the recirculating flow between two manikins and increased the deposition rate of aerosol in the disseminator. A low-temperature environment can reduce the deposition rate of aerosol particles on the body of the disseminator due to a strong thermal plume. Therefore, the structure of the upper airway should be considered when predicting respiratory aerosol in order to increase the accuracy of aerosol propagation prediction.
Keywords: upper airway; aerosols; deposition efficiency; schlieren; wind; temperature upper airway; aerosols; deposition efficiency; schlieren; wind; temperature

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MDPI and ACS Style

Wei, J.; Xie, H.; Chen, X.; Quan, X.; Zhang, Z.; Xie, X.; Shi, J.; Zeng, G. Numerical Simulation of the Dispersion of Exhaled Aerosols from a Manikin with a Realistic Upper Airway. Atmosphere 2022, 13, 2050. https://doi.org/10.3390/atmos13122050

AMA Style

Wei J, Xie H, Chen X, Quan X, Zhang Z, Xie X, Shi J, Zeng G. Numerical Simulation of the Dispersion of Exhaled Aerosols from a Manikin with a Realistic Upper Airway. Atmosphere. 2022; 13(12):2050. https://doi.org/10.3390/atmos13122050

Chicago/Turabian Style

Wei, Jiayu, Hao Xie, Xiaole Chen, Xibin Quan, Zhicong Zhang, Xiaojian Xie, Jianping Shi, and Guanghui Zeng. 2022. "Numerical Simulation of the Dispersion of Exhaled Aerosols from a Manikin with a Realistic Upper Airway" Atmosphere 13, no. 12: 2050. https://doi.org/10.3390/atmos13122050

APA Style

Wei, J., Xie, H., Chen, X., Quan, X., Zhang, Z., Xie, X., Shi, J., & Zeng, G. (2022). Numerical Simulation of the Dispersion of Exhaled Aerosols from a Manikin with a Realistic Upper Airway. Atmosphere, 13(12), 2050. https://doi.org/10.3390/atmos13122050

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