CFD simulation of spread risks of infectious disease due to interactive wind and ventilation airflows via window openings in high-rise buildings

Jianlei Niu, N. P. Gao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

One of the concerns is that there may exist multiple infectious disease transmission routes across households in high-rise residential buildings, one of which is the natural ventilative airflow through open windows between flats, caused by buoyancy effects. This study presents the modeling of this cascade effect using computational fluid dynamics (CFD) technique. It is found that the presence of the pollutants generated in the lower floor is generally lower in the immediate upper floor by two orders of magnitude, but the risk of infection calculated by the Wells-Riley equation is only around one order of magnitude lower. It is found that, with single-side open-window conditions, wind blowing perpendicularly to the building may either reinforce or suppress the upward transport, depending on the wind speed. High-speed winds can restrain the convective transfer of heat and mass between flats, functioning like an air curtain. Despite the complexities of the air flow involved, it is clear that this transmission route should be taken into account in infection control.
Original languageEnglish
Title of host publicationISCM II and EPMESC XII - Proc. of the 2nd Int. Symposium on Computational Mechanics and the 12th Int. Conf. on the Enhancement and Promotion of Computational Methods in Engineering and Science
Pages169-174
Number of pages6
Volume1233
EditionPART 1
DOIs
Publication statusPublished - 24 Aug 2010
Event2nd International Symposium on Computational Mechanics, ISCM II, and the 12th International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science, EPMESC XII - Hong Kong, Macau, Hong Kong
Duration: 30 Nov 20093 Dec 2009

Conference

Conference2nd International Symposium on Computational Mechanics, ISCM II, and the 12th International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science, EPMESC XII
Country/TerritoryHong Kong
CityHong Kong, Macau
Period30/11/093/12/09

Keywords

  • CFD
  • infectious disease spread
  • turbulence modeling
  • Wells-Riley model

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this