Analysis of counter-rotating wind turbines

Wen Zhong Shen, Vinod Arun Kumar Zakkam, Jens Nørkær Sørensen, Kari Appa

    Research output: Contribution to journalConference articleResearchpeer-review


    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.
    Original languageEnglish
    Book seriesJournal of Physics: Conference Series (Online)
    Pages (from-to)9 pages
    Publication statusPublished - 2007
    Event2nd International Conference on "The Science of Making Torque From Wind" - Kgs. Lyngby, Denmark
    Duration: 28 Aug 200731 Aug 2007
    Conference number: 2


    Conference2nd International Conference on "The Science of Making Torque From Wind"
    CityKgs. Lyngby
    Internet address


    • Counter Rotating Wind Turbine
    • Actuator Line Model


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