IDEAS home Printed from https://ideas.repec.org/a/hin/jnlmpe/591807.html
   My bibliography  Save this article

Direct Numerical Simulation of Flow around a Circular Cylinder Controlled Using Plasma Actuators

Author

Listed:
  • Taichi Igarashi
  • Hiroshi Naito
  • Koji Fukagata

Abstract

Flow around a circular cylinder controlled using plasma actuators is investigated by means of direct numerical simulation (DNS). The Reynolds number based on the freestream velocity and the cylinder diameter is set at . The plasma actuators are placed at 90° from the front stagnation point. Two types of forcing, that is, two-dimensional forcing and three-dimensional forcing, are examined and the effects of the forcing amplitude and the arrangement of plasma actuators are studied. The simulation results suggest that the two-dimensional forcing is primarily effective in drag reduction. When the forcing amplitude is higher, the mean drag and the lift fluctuations are suppressed more significantly. In contrast, the three-dimensional forcing is found to be quite effective in reduction of the lift fluctuations too. This is mainly due to a desynchronization of vortex shedding. Although the drag reduction rate of the three-dimensional forcing is slightly lower than that of the two-dimensional forcing, considering the power required for the forcing, the three-dimensional forcing is about twice more efficient.

Suggested Citation

  • Taichi Igarashi & Hiroshi Naito & Koji Fukagata, 2014. "Direct Numerical Simulation of Flow around a Circular Cylinder Controlled Using Plasma Actuators," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-13, June.
    • Handle: RePEc:hin:jnlmpe:591807
    DOI: 10.1155/2014/591807
    as

    Download full text from publisher

    File URL: http://downloads.hindawi.com/journals/MPE/2014/591807.pdf
    Download Restriction: no
    File URL: http://downloads.hindawi.com/journals/MPE/2014/591807.xml
    Download Restriction: no
    File URL: https://libkey.io/10.1155/2014/591807?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
    ---><---

    More about this item

    Statistics

    Access and download statistics

    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:hin:jnlmpe:591807. 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: Mohamed Abdelhakeem (email available below). General contact details of provider: https://www.hindawi.com .

    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.