Physics of Fluids - Publications

A wavenumber-frequency spectral model for atmospheric boundary layers

Open Access
Journal of Physics: Conference Series 524, 012104 (2014)

Authors

	Michael Wilczek
	Richard Stevens
	Yasuhito Narita
	Charles Meneveau

BibTeΧ

@article{1742-6596-524-1-012104,
  author={Michael Wilczek and Richard J A M Stevens and Yasuhito Narita and Charles Meneveau},
  title={A wavenumber-frequency spectral model for atmospheric boundary layers},
  journal={Journal of Physics: Conference Series},
  volume={524},
  number={1},
  pages={012104},
  url={http://stacks.iop.org/1742-6596/524/i=1/a=012104},
  year={2014},
  abstract={Motivated by the need to characterize power fluctuations in wind farms, we study spatio-temporal correlations of a neutral atmospheric boundary layer in terms of the joint wavenumber-frequency spectrum of the streamwise velocity fluctuations. To this end, we perform a theoretical analysis of a simple advection model featuring the advection of small- scale velocity fluctuations by the mean flow and large-scale velocity fluctuations. The model is compared to data from large-eddy simulations (LES). We find that the model captures the trends observed in LES, specifically a Doppler shift of frequencies due to the mean flow as well as a Doppler broadening due to random sweeping effects.}
}