Axial gap optimisation of half diameter shifted counter rotating dual rotor wind turbine

Csaba Hetyei () and Ferenc Szlivka
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Csaba Hetyei: Obuda University, Doctoral School on Safety and Security Sciences, Budapest, Hungary
Ferenc Szlivka: Obuda University, Donát Bánki Faculty of Mechanical and Safety Engineering, Budapest, Hungary

Interdisciplinary Description of Complex Systems - scientific journal, 2020, vol. 18, issue 3, 389-399

Abstract: General energy demand is continuously increasing due to the fact that wind turbines and other renewable energy sources have begun to appear in previously unexplored areas, such as on the roofs of buildings. In view of this demand, a new type of wind turbines described in this article could become one of the energy generating tools in a smart grid system. In this article, first conventional and unconventional wind turbines are reviewed with respect to efficiency. Then a Counter Rotating Dual Rotor Wind Turbine (CO-DRWT) construction is analysed with Computational Fluid Dynamics (CFD) codes considering a fixed radial and a variable axial distance. In the analysis, power coefficients were calculated for different configurations. It was found that in case of the dual rotor wind turbine, the optimal axial distance for half diameter radial shift was in the range of 0,2 - 0,25 diameter.

Keywords: CFD; CO-DRWT; Optimisation; Smart Grid; Wind Turbine for Urban Areas (search for similar items in EconPapers)
JEL-codes: O13 Q42 (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:zna:indecs:v:18:y:2020:i:3:p:389-399

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