Numerical Simulation of Epidemic Prevention and Ventilation Efficiency in Indoor Spaces with Partitions and an Air curtain
In this study, computational fluid dynamics (CFD) were used to simulate the effect of a partition and air curtain on the concentration of a pollution source in an indoor space with different ventilation configurations. First, in the partition simulation, the performances of six different ventilation...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Tamkang University Press
2024-02-01
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| Series: | Journal of Applied Science and Engineering |
| Subjects: | |
| Online Access: | http://jase.tku.edu.tw/articles/jase-202405-27-5-0005 |
| _version_ | 1827364404821229568 |
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| author | Kun-Liang Hsieh Yu-Hsuan Lee Che-Yin Lee Shu-Yu Peng Shi-Min Lee |
| author_facet | Kun-Liang Hsieh Yu-Hsuan Lee Che-Yin Lee Shu-Yu Peng Shi-Min Lee |
| author_sort | Kun-Liang Hsieh |
| collection | DOAJ |
| description | In this study, computational fluid dynamics (CFD) were used to simulate the effect of a partition and air curtain on the concentration of a pollution source in an indoor space with different ventilation configurations. First, in the partition simulation, the performances of six different ventilation configurations were compared. Based on the results obtained, air curtain simulations were then carried out. In this study, carbon dioxide was chosen as the tracer gas in all simulations, and the realizable k − ε turbulence model was selected. In the partition simulation, a front-and-back ventilation configuration with ventilation inlets/outlets near the side walls (in diagonal) showed the best performance. This configuration was adopted for the air curtain simulation so as to investigate the effect of different air inlet velocities and air curtain velocities. It was found that as the height of the partition increases, although it has a higher chance of blocking the Covid-19 virus, it lowers the ventilation efficiency, resulting in the increase of carbon dioxide concentration in the indoor space. When the partition was replaced with an air curtain, it was found that the higher the height of the air curtain, the lower the carbon dioxide concentration in the indoor space. Compared with the partition, the air curtain can reduce the carbon dioxide concentration by up to 74.6%, indicating that the introduction of the air curtain can have an improving effect on the ventilation in the indoor space. |
| first_indexed | 2024-03-08T08:09:33Z |
| format | Article |
| id | doaj.art-7dc778d60e584f3984a30c7b45ab3126 |
| institution | Directory Open Access Journal |
| issn | 2708-9967 2708-9975 |
| language | English |
| last_indexed | 2024-03-08T08:09:33Z |
| publishDate | 2024-02-01 |
| publisher | Tamkang University Press |
| record_format | Article |
| series | Journal of Applied Science and Engineering |
| spelling | doaj.art-7dc778d60e584f3984a30c7b45ab31262024-02-02T09:42:25ZengTamkang University PressJournal of Applied Science and Engineering2708-99672708-99752024-02-0127524132421Numerical Simulation of Epidemic Prevention and Ventilation Efficiency in Indoor Spaces with Partitions and an Air curtainKun-Liang Hsieh0Yu-Hsuan Lee1Che-Yin Lee2Shu-Yu Peng3Shi-Min Lee4Department of Mechanical and Electro-Mechanical Engineering, Tamkang University, New Taipei City, Taiwan, R.O.C.Department of Aerospace Engineering, Tamkang University, New Taipei City, Taiwan, R.O.C.Department of Refrigeration and Air Conditioning and Energy Engineering, National Chin-Yi University of Technology, Taichung City, Taiwan, R.O.C.Department of Mechanical and Electro-Mechanical Engineering, Tamkang University, New Taipei City, Taiwan, R.O.C.Department of Aerospace Engineering, Tamkang University, New Taipei City, Taiwan, R.O.C.In this study, computational fluid dynamics (CFD) were used to simulate the effect of a partition and air curtain on the concentration of a pollution source in an indoor space with different ventilation configurations. First, in the partition simulation, the performances of six different ventilation configurations were compared. Based on the results obtained, air curtain simulations were then carried out. In this study, carbon dioxide was chosen as the tracer gas in all simulations, and the realizable k − ε turbulence model was selected. In the partition simulation, a front-and-back ventilation configuration with ventilation inlets/outlets near the side walls (in diagonal) showed the best performance. This configuration was adopted for the air curtain simulation so as to investigate the effect of different air inlet velocities and air curtain velocities. It was found that as the height of the partition increases, although it has a higher chance of blocking the Covid-19 virus, it lowers the ventilation efficiency, resulting in the increase of carbon dioxide concentration in the indoor space. When the partition was replaced with an air curtain, it was found that the higher the height of the air curtain, the lower the carbon dioxide concentration in the indoor space. Compared with the partition, the air curtain can reduce the carbon dioxide concentration by up to 74.6%, indicating that the introduction of the air curtain can have an improving effect on the ventilation in the indoor space.http://jase.tku.edu.tw/articles/jase-202405-27-5-0005covid-19air curtainventilationpartitioncfdtwo-fluid model |
| spellingShingle | Kun-Liang Hsieh Yu-Hsuan Lee Che-Yin Lee Shu-Yu Peng Shi-Min Lee Numerical Simulation of Epidemic Prevention and Ventilation Efficiency in Indoor Spaces with Partitions and an Air curtain Journal of Applied Science and Engineering covid-19 air curtain ventilation partition cfd two-fluid model |
| title | Numerical Simulation of Epidemic Prevention and Ventilation Efficiency in Indoor Spaces with Partitions and an Air curtain |
| title_full | Numerical Simulation of Epidemic Prevention and Ventilation Efficiency in Indoor Spaces with Partitions and an Air curtain |
| title_fullStr | Numerical Simulation of Epidemic Prevention and Ventilation Efficiency in Indoor Spaces with Partitions and an Air curtain |
| title_full_unstemmed | Numerical Simulation of Epidemic Prevention and Ventilation Efficiency in Indoor Spaces with Partitions and an Air curtain |
| title_short | Numerical Simulation of Epidemic Prevention and Ventilation Efficiency in Indoor Spaces with Partitions and an Air curtain |
| title_sort | numerical simulation of epidemic prevention and ventilation efficiency in indoor spaces with partitions and an air curtain |
| topic | covid-19 air curtain ventilation partition cfd two-fluid model |
| url | http://jase.tku.edu.tw/articles/jase-202405-27-5-0005 |
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