Local characteristics of cross-unit contamination around high-rise building due to wind effect: Mean concentration and infection risk assessment

X. P. Liu, Jianlei Niu, K. C.S. Kwok, J. H. Wang, B. Z. Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)


In this present work, the characteristics of hazardous gas dispersion and possible cross-unit contamination around a complex-shaped high-rise residential building due to wind effect are thoroughly studied using physical modeling method. Experiments were performed in a boundary layer wind tunnel for a 1:30 scale model that represented a 10-story residential building in prototype. Tracer gas, simulating exhausted room air, was continuously released from different floor levels, and its concentrations on the adjacent envelope surfaces were measured using fast flame ionization detectors. The mean concentration fields were reported and analyzed under different configurations during the experiment to consider the effects on pollutant dispersion behavior due to changes in source position and approaching wind condition, with the main emphasis on the differences between open-window and closed-window conditions. In particular, the measured concentration fields were further examined from a practical point of view, with respect to hazard assessment. Understanding these hazardous plume dispersion features is useful for employing effective intervention strategies in modern residential building environment in case of hazardous substance release. The study on this physical process is not only helpful to reduce the hazardous effect of routine release of harmful pollutant near the building, but also useful for the purpose of prevention and control of accidental infectious diseases outbreak.
Original languageEnglish
Pages (from-to)160-167
Number of pages8
JournalJournal of Hazardous Materials
Issue number1
Publication statusPublished - 15 Aug 2011


  • Hazardous gas dispersion
  • High-rise residential building
  • Infections risk assessment
  • Wind tunnel

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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