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dc.contributor.authorCheynet, Etienne Francois Cyprien
dc.contributor.authorJakobsen, Jasna Bogunovic
dc.contributor.authorSvardal, Benny
dc.contributor.authorReuder, Joachim
dc.contributor.authorKumer, Valerie-Marie
dc.PublishedEnergy Procedia 2016, 94:462-477eng
dc.description.abstractA single pulsed Doppler wind lidar, deployed at the FINO1 platform in the North Sea, has been used to monitor the lateral and vertical coherence of the along-wind component. To maximize the sampling frequency of the monitoring system, a particular configuration based on small sweeping angles around the mean wind direction is used. The set-up provides wind velocity measurement with an increasing cross-flow separation with increasing distances from the lidar. We present hereby preliminary results from the analysis of the Plan Position Indicator scans carried out with a sampling frequency of 0.13 Hz, and the Range Height Indicator scans sampled at 0.19 Hz. The mean velocity and the turbulence intensity indicated a sufficiently uniform flow, which was verified by the calculation of the along and crosswind turbulence length scales. The lateral and vertical coherence was estimated based on multiple 10-minutes samples, for a mean wind velocity ranging from 10 to 14 m s-1. For the conditions examined, the measured coherence showed a good agreement with the IEC model for low and medium cross-flow separations, and a fairly good agreement with the Frøya model for large separations.en_US
dc.rightsAttribution CC BY-NC-NDeng
dc.subjectPulsed wind lidareng
dc.subjectOffshore windeng
dc.subjectWind turbulenceeng
dc.subjectWind loadeng
dc.subjectWind turbineeng
dc.titleWind coherence measurement by a single pulsed Doppler wind lidaren_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2016 The Author(s)en_US
dc.relation.projectNorges forskningsråd: 227777
dc.relation.projectNorges forskningsråd: 193821

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