Numerical investigation of airflow pattern and particulate matter transport in naturally ventilated multi-room buildings

Indoor Air
T-J ChangH-M Kao

Abstract

This study reports on a numerical investigation of transport behavior of indoor airflow and size-dependent particulate matter (PM) in multi-room buildings. An indoor size-dependent PM transport approach, combining the Eulerian large-eddy simulation of turbulent flow with the Lagrangian particle trajectory tracking, was developed to investigate indoor airflow pattern and PM1/PM2.5/PM10 removal efficiency in naturally ventilated multi-room buildings. A displacement ventilation with a measured indoor PM10 profile in Taipei Metropolis as the initial condition was carried out to characterize spatial and temporal variations of indoor PM1/PM2.5/PM10 removal behavior. The effects of indoor airflow pattern on particle transport mechanisms, e.g., deposition, suspension, migration and escape, were analyzed. Two comparison scenarios, which considered the effects of no indoor partition and different air change rate, respectively, were also conducted. In comparison with the effectiveness of PM1/PM2.5/PM10 removal, the simulated results showed that coarse particles were easier to be removed out of the building than fine particles. Natural ventilation was not an effective way to remove fine particles such as PM1 and PM2.5 in a multi-room build...Continue Reading

References

May 22, 1998·International Journal of Health Services : Planning, Administration, Evaluation·A E Dembe
Jul 26, 2002·Journal of the Air & Waste Management Association·Lance Wallace, Cynthia Howard-Reed
Sep 25, 2002·Journal of the Air & Waste Management Association·Tsang-Jung Chang
Aug 28, 2004·Indoor Air·P V Nielsen

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Citations

Nov 2, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Ana G IriarteGustavo A Argüello
Sep 26, 2013·Journal of Exposure Science & Environmental Epidemiology·Kai-Chung ChengLynn M Hildemann
Jun 13, 2015·Environmental Science and Pollution Research International·Hyeon-Ju OhJong-Ryeul Sohn
Nov 4, 2009·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Alexandre VidalFrédérique Clément

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