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SUMMARY:An ideal limit for the performance of large wind farms - Dr Paolo 
 Luzzatto-Fegiz
DTSTART:20150122T160000Z
DTEND:20150122T170000Z
UID:TALK57386@talks.cam.ac.uk
CONTACT:Nalin Patel
DESCRIPTION:A Winton teatime discussion hosted by Dr Paolo Luzzatto-Fegiz\
 , junior Research Fellow based at DAMTP\, where he works on the aerodynami
 cs of large wind farms. In July\, he will join the Mechanical Engineering 
 department at UC Santa Barbara\, where he will lead the newly formed Labor
 atory for Fluid Energy Science.\n\nAbstract: The power output of wind farm
 s is limited by wind shadowing effects between turbines\, which can lead t
 o drastic performance losses. Reducing such losses is the subject of exten
 sive research\; however\, there is currently no theory yielding an upper b
 ound on the amount of power that can be extracted by a turbine array. Esta
 blishing such a bound is of key importance\; if current wind farms are alr
 eady close to this limit\, further research may not be cost-effective. We 
 build a model describing a large array of turbines with arbitrary design a
 nd layout\, finding a theoretical limit that is an order of magnitude high
 er than the output of current wind farms. Our theory also indicates that f
 arm output is primarily affected by the large-scale flow features over the
  array\, rather than by individual turbine performance\, and therefore sug
 gests a strategy for pursuing substantial array improvements.
LOCATION:TCM Seminar room\, 530 Mott
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