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Analysis of Counter-Rotating Wind Turbines

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Published under licence by IOP Publishing Ltd
, , Citation W Z Shen et al 2007 J. Phys.: Conf. Ser. 75 012003 DOI 10.1088/1742-6596/75/1/012003

1742-6596/75/1/012003

Abstract

This paper presents a study on the performance of a wind turbine with two counter-rotating (CRWT) rotors. The characteristics of the two counter-rotating rotors are on a 3-bladed Nordtank 500 kW rotor. The analysis has been carried out by using an Actuator Line technique implemented in the Navier-Stokes code EllipSys3D. The analysis shows that the Annual Energy Production can be increased to about 43.5 %, as compared to a wind turbine with a single rotor. In order to determine the optimal settings of the CRWT turbine, parameters such as distance between two rotors and rotational speed have been studied.

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10.1088/1742-6596/75/1/012003