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Journal article · Conference paper

Analysis of counter-rotating wind turbines

By Shen, Wen Zhong1,2; Zakkam, Vinod Arun Kumar; Sørensen, Jens Nørkær1,2; Appa, Kari3

From

Fluid Mechanics, Department of Mechanical Engineering, Technical University of Denmark1

Department of Mechanical Engineering, Technical University of Denmark2

Appa Renewable Energy Systems, Inc.3

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.

Language: English
Publisher: IOP Publishing
Year: 2007
Pages: 012003
Proceedings: 2nd International Conference on "The Science of Making Torque From Wind"
ISSN: 17426596 and 17426588
Types: Journal article and Conference paper
DOI: 10.1088/1742-6596/75/1/012003
ORCIDs: Shen, Wen Zhong and Sørensen, Jens Nørkær
Keywords

Actuator Line Model Counter Rotating Wind Turbine

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