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Advances in Science and Research Contributions in Applied Meteorology and Climatology
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Volume 6, issue 1
Adv. Sci. Res., 6, 79–86, 2011
https://doi.org/10.5194/asr-6-79-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
Adv. Sci. Res., 6, 79–86, 2011
https://doi.org/10.5194/asr-6-79-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

  19 Apr 2011

19 Apr 2011

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

H. Nakayama1, K. Jurcakova2, and H. Nagai1 H. Nakayama et al.
  • 1Japan Atomic Energy Agency, Ibaraki, Japan
  • 2Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Prague, Czech Republic

Abstract. 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.

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