IDEAS home Printed from https://ideas.repec.org/a/wsi/ijmpcx/v32y2021i03ns0129183121500340.html
   My bibliography  Save this article

Flow features of three side-by-side rectangular cylinders under the effect of aspect ratios and Reynolds numbers

Author

Listed:
  • Hamid Rahman

    (Department of Mathematics & Statistics, Bacha Khan University, Charsadda 24420, Pakistan)

  • Waqas Sarwar Abbasi

    (Department of Mathematics, Air University, Islamabad 44000, Pakistan)

  • Shams-ul-Islam

    (Department of Mathematics, COMSATS University, Islamabad 44000, Pakistan)

  • Raees Khan

    (Department of Mathematics, FATA University, Darra Adam Khel, N.M.D. Kohat 26000, Pakistan)

  • Muhammad Uzair Khan

    (Department of Mathematics & Statistics, Bacha Khan University, Charsadda 24420, Pakistan)

Abstract

This study focuses on the characteristics of flow past three side-by-side rectangular cylinders under the effect of aspect ratios (AR) and Reynolds numbers (Re) at two different gap ratios (g) using the lattice Boltzmann method. For this purpose, AR is varied in the range of 0.25–4, the Re values are 100, 140 and 180 and the two different values of g taken into account are g=0.5 and 3. The results are presented in the form of vorticity contours, temporal histories of drag and lift coefficients and power spectrum of lift coefficients. Also, the variation of physical parameters like mean drag coefficient, Strouhal number and the root-mean-square values of drag and lift coefficients with Re and AR is presented for g=0.5 and 3. The current numerical computations yield that for both gap ratios and all Re, there exist four different flow regimes depending on AR: (a) steady flow, (b) modulated flow, (c) symmetric flow and (d) periodic flow. At narrow gap ratios, the jet flow emerging within the gaps of cylinders altered the flow structures and fluid forces abruptly. The aspect ratio is found to have more influence on the flow characteristics of cylinders as compared to the Reynolds numbers at large gap ratios.

Suggested Citation

  • Hamid Rahman & Waqas Sarwar Abbasi & Shams-ul-Islam & Raees Khan & Muhammad Uzair Khan, 2021. "Flow features of three side-by-side rectangular cylinders under the effect of aspect ratios and Reynolds numbers," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 32(03), pages 1-19, March.
    • Handle: RePEc:wsi:ijmpcx:v:32:y:2021:i:03:n:s0129183121500340
    DOI: 10.1142/S0129183121500340
    as

    Download full text from publisher

    File URL: http://www.worldscientific.com/doi/abs/10.1142/S0129183121500340
    Download Restriction: Access to full text is restricted to subscribers
    File URL: https://libkey.io/10.1142/S0129183121500340?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

    for a different version of it.

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;
    ;

    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:wsi:ijmpcx:v:32:y:2021:i:03:n:s0129183121500340. 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: Tai Tone Lim (email available below). General contact details of provider: http://www.worldscinet.com/ijmpc/ijmpc.shtml .

    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.