Computational fluid dynamics investigation of some wind turbine rotor design parameters

Autor:	George N. Barakos, S. Gomez-Iradi
Rok vydání:	2008
Předmět:	Engineering business.industry Mechanical Engineering Energy Engineering and Power Technology Rotational speed Solver Computational fluid dynamics Turbine Wind speed Compressibility Pitch angle Aerospace engineering business Marine engineering Wind tunnel
Zdroj:	Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy. 222:455-470
ISSN:	2041-2967 0957-6509
DOI:	10.1243/09576509jpe526
Popis:	This article presents an investigation of the relative importance of key design parameters of a horizontal axis wind turbine (HAWT) blade. Computational fluid dynamics (CFD) is used as the main tool, after validation against experimental data of the (National Aeronautics and Space Administration/National Renewable Energy Laboratory) NREL/NASA-Ames Phase VI wind tunnel campaign. Tip and root sections, blade aspect ratio, and pitch angle were analysed and all CFD calculations were performed using a compressible Reynolds-averaged Navier—Stokes solver. CFD grids of advanced multi-block topologies were used including up to 4.5 million cells. A grid convergence study indicated that a resolution of 3.4 million cells was adequate for the selected flow conditions, which correspond to an upwind wind turbine at 0° yaw angle, 7 m/s wind speed, and 72 r/min rotational speed. Various root and tip configurations were considered and the results obtained indicate that the exact representation of the root and tip geometry of an HAWT has a small but finite effect in the thrust and torque levels at working conditions. This effect is however secondary to the effects of aspect ratio and blade pitch.
Databáze:	OpenAIRE
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