A wavenumber-frequency spectral model for atmospheric boundary layers
A wavenumber-frequency spectral model for atmospheric boundary layers
复制标题
大气边界层的波数-频谱模型
DOI:
10.1088/1742-6596/524/1/012104
复制
发表时间:
2014
期刊:
影响因子:
--
通讯作者:
C. Meneveau
中科院分区:
文献类型:
--
作者:
M. Wilczek;R.J.A.M. Stevens;Y. Narita;C. Meneveau
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.
DOI:
10.1002/zamm.19250050212
发表时间:
1925-01-01
期刊:
ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
影响因子:
--
作者:
Prandtl, L
通讯作者:
Prandtl, L