Validation of OML,AERMOD/PRIME and MISKAM Using the Thompson Wind-Tunnel Dataset for Simple Stack-Building Configurations |
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Authors: | Helge Rørdam Olesen Ruwim Berkowicz Matthias Ketzel Per Løfstrøm |
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Affiliation: | (1) National Environmental Research Institute, Aarhus University, P.O. Box 358, 4000 Roskilde, Denmark |
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Abstract: | A comprehensive dataset on dispersion behind rectangular buildings has been used to analyse the performance of two dispersion models in respect to their handling of building effects: the Danish OML model and the US AERMOD model with the PRIME building algorithm; additionally, the German MISKAM model has been assessed. OML and AERMOD are regulatory plume models with limited requirements in terms of input and computing resources, whereas MISKAM is a computational fluid dynamical model, and as such much more demanding. For most scenarios considered, the degree of misprediction in respect to the maximum concentrations is less than a factor of two for OML and AERMOD. However, in respect to the concentration at a specific location, especially in the near field, both models often result in larger mispredictions. MISKAM provides more accurate predictions. |
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Keywords: | Building amplification factor Building downwash Dispersion Model discrepancy factor Wind tunnel |
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