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3D Flow and Pollutant Dispersion Simulation in Organized Cubic Structures

  • D. Angelidis
  • V. Assimakopoulos
  • G. Bergeles
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 117)

Abstract

The turbulent flow and the pollutant dispersion in organized cubic structures simulating an idealized building arrangement in a city is numerically investigated. The basic building arrangement under investigation is the experimental arrangement reported by Uehara et al (2000); it consists of an in line arrangement of cubic blocks having upwind a number of low rise square blocks which act as roughness elements for creating turbulent flow. The purpose of the investigation is to gain physical knowledge on the structure of the three dimensional flow and the pollutant dispersion mechanism, to compare with published two dimensional simulations and mainly to investigate the unsteady character of the flow field and its time scale characteristics.

Keywords

Flow Field Street Canyon Roughness Element Pollutant Dispersion Vortex Filament 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Castro, I.P., Robins, A.G.: The Flow Around a Surface-Mounted Cube in Uniform and Turbulent Streams. Journal of Fluid Mechanics 79, 307–335 (1977)CrossRefGoogle Scholar
  2. Chang, C., Meroney, R.: Numerical and Physical Modeling of Bluff Body Flow and Dispersion in Urban Street Canyons. Journal of Wind Engineering and Industrial Aerodynamics 89, 1325–1334 (2001)CrossRefGoogle Scholar
  3. Liu, C.-H., Leung, D.Y.C., Barth, M.C.: On the prediction of air and pollutant exchange rates in street canyons of different aspect ratios using large-eddy simulation. Atmospheric Environment 39, 1565–1574 (2005)Google Scholar
  4. Johnson, G., Hunter, L.: Some Insights into Typical Urban Canyon Airflows. Atmospheric Environment 33, 3991–3999 (1999)CrossRefGoogle Scholar
  5. Kim, J., Baik, J.: A Numerical Study of the Effects of Ambient Wind Direction on Flow and Dispersion in Urban Street Canyons Using the RNG k-ε Turbulence Model. Atmospheric Environment 38, 3039–3048 (2004)CrossRefGoogle Scholar
  6. Launder, B.E., Spalding, D.B.: Mathematical Models of Turbulenece. Academic Press Inc., London (1972)Google Scholar
  7. Louka, P., Belcher, S.E., Harrison, R.G.: Coupling between air flow in streets and the well developed boundary layer aloft. Atmospheric Environment 34, 2613–2621 (2000)CrossRefGoogle Scholar
  8. Meroney, R., Pavageau, M., Rafailidis, S., Schatzmann, M.: Study of Line Source Characteristics for 2-D Physical Modelling of Pollutant Dispersion in Street Canyons. Journal of Wind Engineering and Industrial Aerodynamics 62, 37–56 (1996)CrossRefGoogle Scholar
  9. Oke, T.R.: Street Design and Urban Canopy Layer Climate. Energy and Buildings 11, 103–113 (1988)CrossRefGoogle Scholar
  10. Uehara, K., Murakami, S., Oikawa, S., Wakamatsu, S.: Wind Tunnel Experiments on how Thermal Stratification Affects Flow in and Above Urban Street Canyons. Atmospheric Environment 34, 1553–1562 (2000)CrossRefGoogle Scholar
  11. Li, X.-X., Liu, C.-H., Leung, D.Y.C., et al.: Recent progress in CFD modelling of wind field and pollution transport in street canyons. Atmospheric Environment 40(29), 5640–5658 (2006)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • D. Angelidis
    • 2
  • V. Assimakopoulos
    • 1
  • G. Bergeles
    • 2
  1. 1.Nat. ObservatoryAthensGreece
  2. 2.Nat. Technical University of AthensAthensGreece

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