Experimental and CFD Simulations of the Aerosol Flow in the Air Ventilating the Underground Excavation in Terms of SARS-CoV-2 Transmission

The paper presents the results of experimental and model tests of transport of dispersed fluid droplets forming a cloud of aerosol in a stream of air ventilating a selected section of the underground excavation. The excavation selected for testing is part of the ventilation network of the Experiment...

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Bibliographic Details
Published in:Energies (Basel) 2021-08, Vol.14 (16), p.4743
Main Authors: Janoszek, Tomasz, Lubosik, Zbigniew, Świerczek, Lucjan, Walentek, Andrzej, Jaroszewicz, Jerzy
Format: Article
Language:English
Subjects:
Aerodynamics
aerosol
Aerosols
Air temperature
CFD
Computational fluid dynamics
Computer applications
Coronaviruses
COVID-19
Droplets
Emissions
Environmental conditions
Excavation
Field tests
Flow velocity
Fluid dynamics
Humidity
Hydrodynamics
In situ tests
Infections
Mathematical models
Mine ventilation
Mining industry
Model testing
modelling
Numerical models
Relative humidity
Respiration
Severe acute respiratory syndrome coronavirus 2
Social distancing
Speech
underground mine
Viruses
Water vapor
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Summary:The paper presents the results of experimental and model tests of transport of dispersed fluid droplets forming a cloud of aerosol in a stream of air ventilating a selected section of the underground excavation. The excavation selected for testing is part of the ventilation network of the Experimental Mine Barbara of the Central Mining Institute. For given environmental conditions, such as temperature, pressure, relative humidity, and velocity of air, the distribution of aerosol droplet changes in the mixture of air and water vapor along the excavation at a distance was measured at 10 m, 25 m, and 50 m from the source of its emission. The source of aerosol emission in the excavation space was a water nozzle that was located 25 m from the inlet (inlet) of the excavation. The obtained results of in situ tests were related to the results of numerical calculations using computational fluid dynamics (CFD). Numerical calculations were performed using Ansys-Fluent and Ansys-CFX software. The dimensions and geometry of the excavation under investigation are presented. The authors describe the adopted assumptions and conditions for the numerical model and discuss the results of the numerical solution.
ISSN:1996-1073
1996-1073
DOI:10.3390/en14164743