| Author: | Yeung, Cheuk Yin |
| Title: | Investigation of partition screen in preventing airborne transmission of COVID-19 in study room |
| Advisors: | You, Ruoyu (BSE) |
| Degree: | M.Eng. |
| Year: | 2021 |
| Subject: | COVID-19 (Disease) COVID-19 (Disease) -- Transmission -- Prevention Hong Kong Polytechnic University -- Dissertations |
| Department: | Department of Building Services Engineering |
| Pages: | 84, [6] pages : color illustrations |
| Language: | English |
| Abstract: | The outbreak of Novel coronavirus disease (COVID-19) kills over one million people worldwide (up to 11 October 2020) [1]. The virus could transmit in numerous ways, and the most common way is airborne transmission, which raised everyone's concern. Therefore, policies are made in different countries. Installation of partition screen is one of the common measures being adopted. In this dissertation, partition screens with different arrangements in a small study room will be simulated by computational fluid dynamics (CFD) software and determine the effectiveness of partition screen in preventing airborne transmission of COVID-19. Two typical arrangement - "Side partition only" and "Front and side partition" are simulated. They demonstrated that the arrangement of partition screen can greatly affect the airflow profile and result in different dispersion patterns of virus carried airborne droplets inside the study room. In the presence of partition screens, it can change airflow direction or strength the dispersion direction of airborne particles. Apart from acting as a physical barrier to block the virus carried droplet particles, it can act as a dispersion channel for bioaerosol to travel long-distance and be more directional. For the arrangement of "front and side partition", the three-sides bounded partition can block the entrance of both contaminated and clean air from the front and side direction. Therefore, when the virus particles enter the back side of the bounded region, the virus particles can be trapped and quickly accumulated due to poor ventilation in the bounded region. Thus, it led to the rise of infection risk in this arrangement setting. The presence of partition screens can affect the infection risk of airborne transmission for induvial occupants at a particular location. In the simulation scenarios, the infection risk shifted from one occupant to another, which does not improve the overall performance in preventing airborne transmission. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 5745.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 4.95 MB | Adobe PDF | View/Open |
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