The influence of the complexity of ground surface in the flow through a spectral analysis of turbulent quantities in the stable boundary layer

Authors

  • Viviane da Silva Guerra Universidade Federal de Santa Maria, Santa Maria, RS
  • Otávio Costa Acevedo Universidade Federal de Santa Maria, Santa Maria, RS
  • Pablo Eli Soares de Oliveira Universidade Federal de Santa Maria, Santa Maria, RS

DOI:

https://doi.org/10.5902/2179460X30851

Keywords:

Obstructions, Low-frequency motions, Velocity spectra

Abstract

Two micrometeorological towers located in the experimental site of Pedras Altas in the region of Pampa Gaúcho were separated by a distance of about 500 m from each other, enabling a small scale horizontal variability, due to the complexity of the terrain. Such variability favors distinct contributions in the modes of flow. This work points out a relation between classes of maximum wind measured in the station of the top of the hill with obstructions provoked by the heterogeneity of the terrain. Through a spectral analysis it was possible to find encouraging results for future work, as the study shows a pertinent relation between non-turbulent low frequency motions with surface heterogeneity and how this implies in the horizontal and vertical turbulent velocity.

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References

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Published

2018-04-18

How to Cite

Guerra, V. da S., Acevedo, O. C., & Oliveira, P. E. S. de. (2018). The influence of the complexity of ground surface in the flow through a spectral analysis of turbulent quantities in the stable boundary layer. Ciência E Natura, 40, 241–244. https://doi.org/10.5902/2179460X30851

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