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CFD analysis of the air supply rate influence on the aerosol dispersion in a university lecture room by Arpino, Fausto (author);Cortellessa, Gino (author);D'Alicandro, Andrea Carlo (author);Grossi, Giorgio (author);Massarotti, Nicola (author);Mauro, Alessandro (author) is a Environmental Science article available to read on EtoBox.

What is CFD analysis of the air supply rate influence on the aerosol dispersion in a university lecture room about?

The airborne droplet route has been recognized as the main pathway of infection transmission in indoor environments, drawing the attention to a proper design of Heating, Ventilation and Air Conditioning (HVAC) systems. This is particularly relevant for gathering spaces such as schools and universities, due to the high crowding levels and the long exposure times. Using 3D Computational Fluid Dynamics (CFD) numerical simulations based on a Eulerian-Lagrangian approach and validated against velocity measurements, the present study investigates the distribution over time of airborne droplets (aerosol) emitted in correspondence of the teacher position inside a lecture room, during a 2-h speaking activity (so reproducing a 2-h lesson), as a function of different air supply rates from the HVAC system. As the aim of the paper is to provide useful information for proper design and operation of HVAC systems, the room has been assumed to be empty. Results show that increasing the air supply rate is not always an effective solution to reduce aerosol concentration in correspondence of the positions occupied by the students attending the lesson. In fact, for the specific case under investigation

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Author

Arpino, Fausto (author);Cortellessa, Gino (author);D'Alicandro, Andrea Carlo (author);Grossi, Giorgio (author);Massarotti, Nicola (author);Mauro, Alessandro (author)

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)