Laser measurements of flow over a forest

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by J Mann, E Dellwik, F Bingöl, O Rathman
Abstract:
It is estimated that 20-30% of the total European wind energy growth takes place in areas where the wind flow is affected by forests. The description of the wind conditions near and above forests poses a challenge, since assumptions of classical boundary-layer theory are violated. Turbines are designed for maximal turbulence intensity and wind profile gradient. In forested areas, these limits are often violated possibly leading to reduced turbine life-time. In this paper we investigate the mean wind profile and turbulence statistics above an 85 years old dense beech forest by use of a laser Doppler anemometer and compare the profiles with a CFD model specifically made for the modelling of flow over vegetation canopies.
Reference:
Laser measurements of flow over a forest (J Mann, E Dellwik, F Bingöl, O Rathman), Chapter in IOP Conference Series: Earth and Environmental Science, IOP Publishing Ltd., volume 1, 2008.
Bibtex Entry:
@INCOLLECTION{Mann2008,
  author = {J Mann and E Dellwik and F Bingöl and O Rathman},
  title = {Laser measurements of flow over a forest},
  booktitle = {IOP Conference Series: Earth and Environmental Science},
  publisher = {IOP Publishing Ltd.},
  year = {2008},
  volume = {1},
  number = {1},
  pages = {012050},
  __markedentry = {[febi:]},
  abstract = {It is estimated that 20-30% of the total European wind energy growth
	takes place in areas where the wind flow is affected by forests.
	The description of the wind conditions near and above forests poses
	a challenge, since assumptions of classical boundary-layer theory
	are violated. Turbines are designed for maximal turbulence intensity
	and wind profile gradient. In forested areas, these limits are often
	violated possibly leading to reduced turbine life-time. In this paper
	we investigate the mean wind profile and turbulence statistics above
	an 85 years old dense beech forest by use of a laser Doppler anemometer
	and compare the profiles with a CFD model specifically made for the
	modelling of flow over vegetation canopies.},
  doi = {10.1088/1755-1315/1/1/012050},
  file = {:YAYINLAR\B1\1755-1315_1_1_012050.pdf:PDF},
  journal = {IOP Conference Series: Earth and Environmental Science},
  owner = {febi},
  timestamp = {2013.12.11},
  url = {http://stacks.iop.org/1755-1315/1/i=1/a=012050}
}