Large-eddy simulation of plume dispersion within regular arrays of cubic buildings

0361613 - ÚT 2012 RIV DE eng J - Journal Article
Nakayama, H. - Jurčáková, Klára - Nagai, H.
Large-eddy simulation of plume dispersion within regular arrays of cubic buildings.
Advances in Science and Research. Roč. 6, - (2011), s. 79-86. ISSN 1992-0628.
[EMS Annual Meeting /10./ and European Conference on Applied Climatology (ECAC) /8./. Zürich, 13.09.2011-17.09.2011]
Institutional research plan: CEZ:AV0Z20760514
Keywords : atmospheric boundary layer * instantaneous concentration * urban packing density
Subject RIV: DG - Athmosphere Sciences, Meteorology
http://www.adv-sci-res.net/6/79/2011/asr-6-79-2011.html

There is a potential problem that hazardous and flammable materials are accidentally or intentionally released within populated urban areas. For the assessment of human health hazard from toxic substances, the existence of high concentration peaks in a plume should be considered. For the safety analysis of flammable gas, certain critical threshold levels should be evaluated. Therefore, in such a situation, not only average levels but also instantaneous magnitudes of concentration should be accurately predicted. In this study, we perform Large-Eddy Simulation (LES) of plume dispersion within regular arrays of cubic buildings with large obstacle densities and investigate the influence of the building arrangement on the characteristics of mean and fluctuating concentrations.
Permanent Link: http://hdl.handle.net/11104/0198890