Direct observation of the atmospheric turbulence in the plume emitted by a Thermoelectric Plant
Keywords:Atmospheric Boundary Layer, Dispersion, Turbulent Spectra, Atmospheric Turbulence
AbstractA micrometeorological tower with 11 levels of turbulence observation has been in operation near to the Linhares Geração SA Thermoelectric Plant since August 2016. In particular cases, when the wind blows towards the tower, it is possible to observe directly the physical characteristics of the emitted plume, such as the turbulence and fluxes inside the emitted plume. In the present work, a case is analyzed in which it has occurred. The analysis shows that these events are characterized by an increase in the air
wind speed and temperature fluctuations, which starts exactly when the wind direction becomes south, direction which the power plant is located in relation to the tower. Next, it is proved that these events of increase of the fluctuations are in fact turbulent signs, the spectra of the observed time series during the period follow the Law of Kolmogorov. Finally, it is presented the temporal evolutions of the vertical profiles of turbulent kinetic energy and heat turbulent fluxes in the period of the plume passage by the tower.
FRISCH, U. (1995). Turbulence: the legacy of AN Kolmogorov. Cambridge university press.
PANOFSKY, H. A., DUTTON, J. A. (1983). Atmospheric turbulence. John Wiley.
STULL, R. B. (1988). An introduction to boundary layer meteorology, vol 13. Springer Science & Business Media, Dordrecht.
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