Height-dependence of spatio-temporal spectra of wall-bounded turbulence – LES results and model predictions

@inproceedings{Wilczek2015HeightdependenceOS,
  title={Height-dependence of spatio-temporal spectra of wall-bounded turbulence – LES results and model predictions},
  author={Michael Wilczek and Richard J. A. M. Stevens and Charles Meneveau},
  year={2015}
}
Wavenumber–frequency spectra of the streamwise velocity component obtained from large-eddy simulations (LES) are presented. Following recent work we show that the main features, a Doppler shift and a Doppler broadening of frequencies, are captured by an advection model based on the Tennekes–Kraichnan random-sweeping hypothesis with additional mean flow. In this paper, we focus on the height-dependence of the spectra within the logarithmic layer of the flow. We furthermore benchmark an… CONTINUE READING

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