Optimizing cabin air inlet velocities and personal risk assessment: Introducing the Personal Contamination Ratio (PCR) method for enhanced aircraft cabin infection risk evaluation
Renquan Tu, Yidan Shang, Xueren Li, Fajiang He, Jiyuan Tu, Krit Pongpirul, Krit Pongpirul, Krit Pongpirul, Krit Pongpirul
TL;DR
This study introduces a new method to assess infection risk in aircraft cabins by analyzing airflow and droplet movement, showing that higher air supply velocities can significantly reduce contamination.
Contribution
The study introduces the Personal Contamination Ratio (PCR) method and improves breathing zone calculations for droplet tracking in aircraft cabins.
Findings
Increasing air supply velocity reduces potential infections by 51.8% and exposure risk by 26.4%.
Larger droplets show more stable movement at higher air supply velocities compared to smaller ones.
The PCR method provides a comprehensive analysis of droplet dynamics across particle sizes.
Abstract
Recurrent epidemics of respiratory infections have drawn attention from the academic community and the general public in recent years. Aircraft plays a pivotal role in facilitating the cross-regional transmission of pathogens. In this study, we initially utilized an Airbus A320 model for computational fluid dynamics (CFD) simulations, subsequently validating the model’s efficacy in characterizing cabin airflow patterns through comparison with empirical data. Building upon this validated framework, we investigate the transport dynamics of droplets of varying sizes under three air supply velocities. The Euler-Lagrangian method is employed to meticulously track key parameters associated with droplet transport, enabling a comprehensive analysis of particle behavior within the cabin environment. This study integrates acquired data into a novel PCR (Personal Contamination Rate) equation to…
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Taxonomy
TopicsInfection Control and Ventilation · Aerodynamics and Acoustics in Jet Flows · Wind and Air Flow Studies