Modeling particle dispersion under human activity disturbance in a multizone indoor environment

B. Hu, J. D. Freihaut, W. P. Bahnfleth, P. Aumpansub, B. Thran

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Human activity is an important factor influencing particle resuspension in the indoor environment. This work studies the applicability of a multizone airflow and contaminant transport model (CONTAM 2.1) in the simulation of indoor dispersion of particles under human activity disturbance. An iterative method is suggested to complement CONTAM 2.1, by tracking the transient particle concentration on floor surface due to dynamic deposition and resuspension process. A three-zone building with a heating, ventilation, and air conditioning system is used as the simulation case to test the convergence and accuracy of this algorithm under different particle-release scenarios. The algorithm shows a very fast convergence speed in the simulation. Comparisons of calculation results between the multizone model and the analytical model show good agreement and verify the accuracy of the multizone model simulation. The airborne particle concentration profiles and human breathing dose are also analyzed for the three-zone building model.

Original languageEnglish (US)
Pages (from-to)187-193
Number of pages7
JournalJournal of Architectural Engineering
Issue number4
StatePublished - 2007

All Science Journal Classification (ASJC) codes

  • Visual Arts and Performing Arts
  • Building and Construction
  • Architecture
  • Civil and Structural Engineering


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