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SUMMARY:Large wind farm power and turbine yaw: insights from turbulent bou
 ndary layer and vortex structure fundamentals
DTSTART:20230323T101500
DTEND:20230323T111500
DTSTAMP:20260531T115311Z
UID:0dac2fbb8acea3b340a2b6fed681f0e3e1d8fa5b5e6c1b968c372ff3
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Charles Meneveau\nIn this presentation we examine the qu
 estion of wind energy power density and wind farm flow structure from the 
 viewpoint of basic turbulent boundary layer physics. We restrict attention
  to near-neutral atmospheric conditions and consider the limit of very lar
 ge wind farms on flat terrains or off-shore.  We show how generalized log
 arithmic velocity profiles can be used to enhance our understanding of win
 d power density. We  then go on to show how simple lifting line theory ca
 n be applied to greatly improve on models for yawed wind turbine wakes. Ef
 fects of vortex decay due to turbulent diffusion are discussed and we show
  how to include such effects in simple analytical models for the velocity 
 distribution in wakes. Effects of wind veer are also described. Finally\, 
 we summarize efforts to couple local and global boundary layer effects in 
 new-generation wind farm models. The work to be presented arose from the c
 ontributions of C. Shapiro (now DOE)\, G. Starke (now NREL)\, D. Gayme (JH
 U)\, G. Narasimhan (JHU)\, M. Bastankhah (Durham\, UK)\, S. Shamsoddin (Z
 ürich\, CH)\, M. Howland (now MIT)\, also based on earlier work with R. S
 tevens (Twente U\, NL)\, M. Calaf (Utah)\, and J. Meyers (Leuven\, B). We 
 are grateful to the US National Science Foundation for financial support.\
 n\n 
LOCATION:BM 5202 https://plan.epfl.ch/?room==BM%205202 https://epfl.zoom.u
 s/j/61721339782
STATUS:CONFIRMED
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