A influência das condições de estabilidade atmosférica nas flutuações de concentração nas superfícies de um obstáculo isolado

Authors

  • Reginaldo Rosa Cotto de Paula Centro Federal de Educação do Espírito Santo, Vitótia, ES
  • Jane Méri Santos Universidade Federal do Espírito Santo, Vitória, ES
  • Valdério Anselmo Reisen Universidade Federal do Espírito Santo, Vitória, ES

DOI:

https://doi.org/10.5902/2179460X63620

Keywords:

concentration fluctuation, atmospheric stability, turbulent flow, peak-to-mean.

Abstract

The dispersion of effluent plume near buildings is a topic of concern to architects, regulatory agencies and air pollution meteorologists. This work, to investigate examine the influence of atmospheric stability and averaging time on the peak-to-mean and the concentration fluctuation intensity on the surface of an isolated building. The “instantaneous” concentration data was obtained from field experiments carried out by Santos (2000). A rapid response photo-ionisation detector was used to obtain high frequency data (50Hz). The time series of concentration on the windward wall showed episodes of zero concentration, which is probably related to the larger turbulent eddies than the plume width reaching the obstacle. The thermal stratification has influenced the concentration fluctuation intensity on the leeward wall

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References

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Published

2002-01-18

How to Cite

Paula, R. R. C. de, Santos, J. M., & Reisen, V. A. (2002). A influência das condições de estabilidade atmosférica nas flutuações de concentração nas superfícies de um obstáculo isolado. Ciência E Natura, 45–60. https://doi.org/10.5902/2179460X63620

Issue

CIÊNCIA E NATURA, SPECIAL VOLUME, 2002: II WORKSHOP ON PHYSICS OF THE PLANETARY BOUNDARY LAYER AND DISPERSION PROCESS MODELING

Section

Articles

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