@article{22124,
  author = {Elizabeth U Finlayson and Ashok J Gadgil and Tracy L Thatcher and Richard G Sextro},
  title = {Pollutant Dispersion in a Large Indoor Space Part 2 -- Computational Fluid Dyamics (CF) Predictions and Comparisons with a Model Experiment for  Isothermal Flow},
  abstract = {<p>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 profiles in a water  filled scale model of an atrium with a continuous pollutant source. Predictions from the RANS  formulation are comparable to an ensemble average of independent identical experiments. Model results  were compared to 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 within a few seconds. These  results suggest that this modeling approach is adequate for predicting isothermal pollutant transport in a  large room with simple geometry.</p>},
  year = {2004},
  journal = {Indoor Air},
  volume = {14},
  number = {4},
  pages = {272-283},
  language = {eng},
}