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Evaluation of a simple analytical model for offshore wind farm wake recovery by in situ data and Weather Research and Forecasting simulations

Platis, Andreas; Hundhausen, Marie; Mauz, Moritz; Siedersleben, Simon; Lampert, Astrid; Bärfuss, Konrad; Djath, Bughsin; Schulz‐Stellenfleth, Johannes; Canadillas, Beatriz; Neumann, Thomas; Emeis, Stefan; Bange, Jens

Abstract:
The recovery of offshore wind farm wakes in the German Bight was analyzed by a unique in situ data set, measured on‐board the research aircraft Dornier Do‐128 during the WIPAFF project in 2016 and 2017. These observations were used to validate a simple analytical wake recovery model in five case studies. The observed recovery rates were compared with the results of the mesoscale Weather Research and Forecasting (WRF) model. The airborne data show that the wake recovery can be described by an exponential function as expected by the analytical model and strengthens the hypothesis that the vertical downward moment flux has an important influence on the wake recovery. However, the predicted wake recovery rates (by the analytical model) do not always fully agree with the observations. Although, as a first‐order approximation, the model seems to perform well, further optimization has to be implemented to account for wind park layout, turbine induced turbulence, and horizontal momentum flux. WRF simulations reveal an exponential recovery, although the mesoscale model does not reproduce the correct atmospheric conditions for most of the cases. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000124813
Veröffentlicht am 19.10.2020
Originalveröffentlichung
DOI: 10.1002/we.2568
Scopus
Zitationen: 2
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 03.2021
Sprache Englisch
Identifikator ISSN: 1095-4244, 1099-1824
KITopen-ID: 1000124813
HGF-Programm 12.02.04 (POF III, LK 01) Urban-Rural Interactions
Weitere HGF-Programme 12.02.04 (POF III, LK 01) Urban-Rural Interactions
Erschienen in Wind energy
Verlag John Wiley and Sons
Band 24
Heft 3
Seiten 212-228
Vorab online veröffentlicht am 22.09.2020
Nachgewiesen in Scopus
Dimensions
Web of Science
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