IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v42y2012icp152-156.html
   My bibliography  Save this article

Wind tunnel test results for a 2/4.5 scale MEXICO rotor

Author

Listed:
  • Cho, Taehwan
  • Kim, Cheolwan

Abstract

This paper presents the wind tunnel test results from MEXNEXT, an IEA wind task for analyzing the measurements which have been taken in the EU project ‘MEXICO’. A 2/4.5 scaled model of ‘MEXICO’ rotor was tested in the KARI low wind tunnel with 5 × 3.75 m2 open jet test section. The aerodynamic performance of the blade which was represented by the torque was measured in the wind speed from 0 to 30 m/s by using the torque sensor installed in the rotating axis. The rotational speed of the rotor was controlled by the electric motor to keep the prescribed blade tip speed from 50 m/s to 90 m/s. Two different surface conditions, free and forced transition conditions were used for all blade tip speeds. Transition dots with 0.18 mm height were attached at the 5% chord line on both sides of the blade surface for the forced transition condition. The torque coefficients with respect to the wind speed coefficient for the forced transition condition show same characteristics for all blade tip speed conditions except for the stall region. But, the torque coefficient for the free transition condition gradually increases as the blade tip speed increases until the tip speed reaches 76 m/s and it has the similar value above that speed. The comparison result between the free and the forced transition conditions at the blade tip speed 76 m/s shows that the torque coefficient for the former case is 30% higher than the latter case. The computational results from ‘Rfoil’ and the BEMT method also shows that the aerodynamic performance of the rotor for the forced transition condition is lower than the free transition one at the wind tunnel test condition.

Suggested Citation

  • Cho, Taehwan & Kim, Cheolwan, 2012. "Wind tunnel test results for a 2/4.5 scale MEXICO rotor," Renewable Energy, Elsevier, vol. 42(C), pages 152-156.
    • Handle: RePEc:eee:renene:v:42:y:2012:i:c:p:152-156
    DOI: 10.1016/j.renene.2011.08.031
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148111004903
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2011.08.031?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Li, B. & Zhou, D.L. & Wang, Y. & Shuai, Y. & Liu, Q.Z. & Cai, W.H., 2020. "The design of a small lab-scale wind turbine model with high performance similarity to its utility-scale prototype," Renewable Energy, Elsevier, vol. 149(C), pages 435-444.
    2. Wang, Ying & Li, Gaohui & Shen, Sheng & Huang, Diangui & Zheng, Zhongquan, 2018. "Investigation on aerodynamic performance of horizontal axis wind turbine by setting micro-cylinder in front of the blade leading edge," Energy, Elsevier, vol. 143(C), pages 1107-1124.
    3. Cho, Taehwan & Kim, Cheolwan, 2014. "Wind tunnel test for the NREL phase VI rotor with 2 m diameter," Renewable Energy, Elsevier, vol. 65(C), pages 265-274.
    4. J. G. Schepers & S. J. Schreck, 2019. "Aerodynamic measurements on wind turbines," Wiley Interdisciplinary Reviews: Energy and Environment, Wiley Blackwell, vol. 8(1), January.
    5. Yan, Chi & Archer, Cristina L., 2018. "Assessing compressibility effects on the performance of large horizontal-axis wind turbines," Applied Energy, Elsevier, vol. 212(C), pages 33-45.
    6. Bai, Chi-Jeng & Wang, Wei-Cheng, 2016. "Review of computational and experimental approaches to analysis of aerodynamic performance in horizontal-axis wind turbines (HAWTs)," Renewable and Sustainable Energy Reviews, Elsevier, vol. 63(C), pages 506-519.
    7. Yao, Shulong & Griffith, D. Todd & Chetan, Mayank & Bay, Christopher J. & Damiani, Rick & Kaminski, Meghan & Loth, Eric, 2020. "A gravo-aeroelastically scaled wind turbine rotor at field-prototype scale with strict structural requirements," Renewable Energy, Elsevier, vol. 156(C), pages 535-547.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:42:y:2012:i:c:p:152-156. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.