Pollutant dispersion in a large indoor space. Part 2: Computational fluid dynamics predictions and comparison with a scale model experiment for isothermal flow

Indoor Air
Elizabeth U FinlaysonR G Sextro

Abstract

This paper reports on an investigation of the adequacy of computational fluid dynamics (CFD), using a standard Reynolds Averaged Navier-Stokes (RANS) model, for predicting dispersion of neutrally buoyant gas in a large indoor space. We used CFD to predict pollutant (dye) concentration distribution in a water-filled scale model of an atrium with a continuous pollutant source in the absence of furniture and occupants. Predictions from the RANS formulation are comparable with an ensemble average of independent identical experiments. Model results were compared with pollutant concentration data in a horizontal plane from experiments in a scale model atrium. Predictions were made for steady-state (fully developed) and transient (developing) pollutant concentrations. Agreement between CFD predictions and ensemble averaged experimental measurements is quantified using the ratios of CFD-predicted and experimentally measured dye concentration at a large number of points in the measurement plane. Agreement is considered good if these ratios fall between 0.5 and 2.0 at all points in the plane. The standard k-epsilon two-equation turbulence model obtains this level of agreement and predicts pollutant arrival time to the measurement plane w...Continue Reading

References

Sep 1, 1996·Journal of the Air & Waste Management Association·E J FurtawJ V Behar
Jan 19, 2000·Journal of Exposure Analysis and Environmental Epidemiology·S J McBrideL M Hildemann
Mar 7, 2000·Journal of Exposure Analysis and Environmental Epidemiology·M P MaskarinecA B Dindal
Mar 1, 1995·Journal of the Air & Waste Management Association·F Rasouli, T A Williams

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Citations

Nov 17, 2011·Environmental Science & Technology·Zheming TongK Max Zhang
Nov 8, 2006·Journal of Occupational and Environmental Hygiene·Buvaneswari JayaramanAshok J Gadgil
Jan 5, 2008·Journal of Environmental Monitoring : JEM·Sagnik Mazumdar, Qingyan Chen

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