Large-eddy simulation of human-induced contaminant transport in room compartments

J. I. Choi, J. R. Edwards

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

A large-eddy simulation is used to investigate contaminant transport owing to complex human and door motions and vent-system activity in room compartments where a contaminated and clean room are connected by a vestibule. Human and door motions are simulated with an immersed boundary procedure. We demonstrate the details of contaminant transport owing to human- and door-motion-induced wake development during a short-duration event involving the movement of a person (or persons) from a contaminated room, through a vestibule, into a clean room. Parametric studies that capture the effects of human walking pattern, door operation, over-pressure level, and vestibule size are systematically conducted. A faster walking speed results in less mass transport from the contaminated room into the clean room. The net effect of increasing the volume of the vestibule is to reduce the contaminant transport. The results show that swinging-door motion is the dominant transport mechanism and that human-induced wake motion enhances compartment-to-compartment transport.

Original languageEnglish
Pages (from-to)77-87
Number of pages11
JournalIndoor Air
Volume22
Issue number1
DOIs
Publication statusPublished - 2012 Feb

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Building and Construction
  • Public Health, Environmental and Occupational Health

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