Airborne transmission and control of respiratory infectious diseases in different scenarios: A bibliometric study

Indoor and Built Environment, Journal Year: 2024, Volume and Issue: unknown

Published: July 26, 2024

The outbreak of the COVID-19 pandemic in 2019 has drawn public awareness to transmission respiratory infectious diseases. To better comprehend developments and trends research on mechanism diseases air, publications Web Science Core Collection database from 2017 2023 were utilized reveal critical information. Herein, yearly quantitative distribution geographical analysed using a bibliometric method information visualization technology. In addition, this study focused airborne characteristics influencing factors Research directions different scenarios innovatively extracted main measures reduce infection risk summarized. Furthermore, some future work suggestions given. findings provide several implications that can serve as guidelines for new experienced researchers establish basic framework before initiating projects.

Language: Английский

Perforated plate ventilation system and dynamics of infectious respiratory particle transmission

International journal of mechanical system dynamics, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 10, 2024

Abstract With the removal of indoor pollutants and assurance air quality emerging as critical research topics, optimization internal environment in offices, where people stay for extended periods, is essential controlling spread infectious respiratory particles. Frequent movements personnel operation doors windows within offices significantly impact mechanisms droplet transmission, warranting further investigation. This study employs computational fluid dynamics simulations to explore dispersion characteristics pollutant efficiency simplified model perforated plate ventilation system (PPVS) (the diameter supply openings has been reasonably uniformly set 0.02 m) office settings, well dynamic door scenarios on concentrations breathing zones. To optimize system's efficiency, airflow velocities (2.86, 3.18, 5.00 m/s) are varied, with conducted at optimal velocity 3.18 m/s. The effects continuous operations, door‐opening directions (towards towards isolation room), opening speeds (π/4, π/6, π/8, π/10 rad/s) also examined, revealing significant impacts spread. Results indicate that PPVS effectively reduces all tested velocities, speed identified Additionally, direction can influence Opening rooms smaller angles (less than 30°) zones, thereby mitigating risk transmission. Faster contribute lower these innovative explores transmission during disease outbreaks, providing valuable theoretical insights technical support prevention improvement.

Language: Английский

Optimizing Ventilation Systems for Dual Objectives: Enhancing Thermal Comfort and Controlling Droplet Dispersion

Aerosol Science and Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 18, 2024

Language: Английский