E
E.S. Politis
Researcher at United States Department of Energy
Publications - 18
Citations - 1268
E.S. Politis is an academic researcher from United States Department of Energy. The author has contributed to research in topics: Wind power & Wind speed. The author has an hindex of 10, co-authored 18 publications receiving 1103 citations.
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Journal ArticleDOI
Modelling and measuring flow and wind turbine wakes in large wind farms offshore
Rebecca Jane Barthelmie,Kurt Schaldemose Hansen,Sten Tronæs Frandsen,Ole Rathmann,J.G. Schepers,W. Schlez,John D. Phillips,K. Rados,Arthouros Zervos,E.S. Politis,P. Chaviaropoulos +10 more
TL;DR: In this article, the authors compare different types of models from computational fluid dynamics (CFD) to wind farm models in terms of how accurately they represent wake losses when compared with measurements from offshore wind farms.
Journal ArticleDOI
Modeling wake effects in large wind farms in complex terrain: the problem, the methods and the issues
E.S. Politis,John Prospathopoulos,D. Cabezon,Kurt Schaldemose Hansen,P. Chaviaropoulos,Rebecca Jane Barthelmie +5 more
TL;DR: In this article, compositional fluid dynamic (CFD) methods are used to predict the power production from entire wind farms in complex terrain and to shed some light into the wake flow patterns.
Journal ArticleDOI
Modelling and measurements of wakes in large wind farms
Rebecca Jane Barthelmie,Ole Rathmann,Sten Tronæs Frandsen,Kurt Schaldemose Hansen,E.S. Politis,John Prospathopoulos,K. Rados,D. Cabezon,W. Schlez,John D. Phillips,A. Neubert,J.G. Schepers,S. P. van der Pijl +12 more
TL;DR: In this article, the authors present research conducted in the Flow workpackage of the EU funded UPWIND project which focuses on improving models of flow within and downwind of large wind farms in complex terrain and offshore.
Journal ArticleDOI
Evaluation of the effects of turbulence model enhancements on wind turbine wake predictions
TL;DR: In this article, a Navier-Stokes solver was used for wind turbine wake prediction under neutral and stable atmospheric conditions, and the effect of wind turbine wakes on power prediction was evaluated with comparison with existing wake measurements.
Journal ArticleDOI
Blade element momentum modeling of inflow with shear in comparison with advanced model results
H. Aa. Madsen,Vasilis A. Riziotis,Frederik Zahle,Martin Otto Laver Hansen,H. Snel,F. Grasso,Torben J. Larsen,E.S. Politis,Flemming Rasmussen +8 more
TL;DR: In this paper, the authors used advanced vortex and computational fluid dynamics models to provide improved insight into the complex flow phenomena and rotor aerodynamics caused by the sheared inflow in megawatt turbines.