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Turbulence role in the fate of virus-containing droplets in violent expiratory events
https://oist.repo.nii.ac.jp/records/1925
https://oist.repo.nii.ac.jp/records/1925d1f6b5d3-7fb7-477a-9576-5bcc0925d1dd
名前 / ファイル | ライセンス | アクション |
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-- (862.2 kB)
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Creative Commons Attribution 4.0 International(https://creativecommons.org/licenses/by/4.0/)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-02-12 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Turbulence role in the fate of virus-containing droplets in violent expiratory events | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Rosti, M. E.
× Rosti, M. E.× Cavaiola, M.× Olivieri, S.× Seminara, A.× Mazzino, A. |
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書誌情報 |
en : Physical Review Research 巻 3, 号 1, p. 013091, 発行日 2021-01-29 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Violent expiratory events, such as coughing and sneezing, are highly nontrivial examples of a two-phase mixture of liquid droplets dispersed into an unsteady turbulent airflow. Understanding the physical mechanisms determining the dispersion and evaporation process of respiratory droplets has recently become a priority given the global emergency caused by the SARS-CoV-2 infection. By means of high-resolution direct numerical simulations (DNSs) of the expiratory airflow and a comprehensive Lagrangian model for the droplet dynamics, we identify the key role of turbulence in the fate of exhaled droplets. Due to the considerable spread in the initial droplet size, we show that the droplet evaporation time is controlled by the combined effect of turbulence and droplet inertia. This mechanism is clearly highlighted when comparing the DNS results with those obtained using coarse-grained descriptions that are employed in the majority of the current state-of-the-art investigations, resulting in errors up to 100% when the turbulent fluctuations are filtered or completely averaged out. | |||||
出版者 | ||||||
出版者 | American Physical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2643-1564 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1103/PhysRevResearch.3.013091 | |||||
権利 | ||||||
権利情報 | © 2021 American Physical Society. | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.3.013091 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |