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Water Science & Technology Vol 66 No 7 pp 1549–1557 © IWA Publishing 2012 doi:10.2166/wst.2012.369 Numerical modelling of odour dispersion around a cubical obstacle using large eddy simulationHarerton Oliveira Dourado, Jane Meri Santos, Neyval C. Reis and Ilias MavroidisDepartamento de engenharia Ambiental, Universidade Federal do Espirito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória - ES - CEP 29075-910, Brazil E-mail: harerton@terra.com.brFaculdade de Aracruz, Rua Professor Berilo Basílio dos Santos, 180, Centro, Aracruz, ES, 29.194-910, Brazil Hellenic Open University, 20 Kalogera Street, 11361, Athens, Greece ABSTRACT In the present work two different large eddy simulation (LES) approaches, namely the Dynamic Smagorinsky model and the Wale model, are used to simulate the air flow and pollutant dispersion around a cubical obstacle. Results are compared with wind tunnel data (WT) and with results from the Smagorinsky LES model. Overall agreement was good between the different LES approaches and the WT results, both for the mean and fluctuating flow and concentration patterns. LES models can provide good estimates of concentration fluctuation intensity and enable the calculation of the intermittency factor. The model results indicate that LES is a viable tool for odour impact assessment. Keywords: atmospheric dispersion around buildings; concentration fluctuations; large eddy simulation (LES); model validation; odour prediction eProduct: Buy this article for £24.00 (IWA MEMBER PRICE: £18.00) All prices include VAT. For customers where VAT should not be applied, the VAT amount will be removed upon payment |
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