IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v10y2017i3p332-d92608.html
   My bibliography  Save this article

Study the Flow behind a Semi-Circular Step Cylinder (Laser Doppler Velocimetry (LDV) and Computational Fluid Dynamics (CFD))

Author

Listed:
  • S. M. Sayeed-Bin-Asad

    (Division of Fluid and Experimental Mechanics, Luleå University of Technology, SE-971 87 Luleå, Sweden)

  • Tord Staffan Lundström

    (Division of Fluid and Experimental Mechanics, Luleå University of Technology, SE-971 87 Luleå, Sweden)

  • Anders Gustav Andersson

    (Division of Fluid and Experimental Mechanics, Luleå University of Technology, SE-971 87 Luleå, Sweden)

Abstract

Laser Doppler Velocimetry (LDV) measurements, flow visualizations and unsteady Reynolds-Averaged Navier-Stokes (RANS) Computational Fluid Dynamics (CFD) simulations have been carried out to study the turbulent wake that is formed behind a semi-circular step cylinder at a constant flow rate. The semi-circular cylinder has two diameters, a so-called step cylinder. The results from the LDV measurements indicate that wake length and vortex shedding frequency varies with the cylinder diameter. This implies that a step cylinder can be used to attract fish of different size. By visualizations of the formation of a recirculation region and the well-known von Kármán vortex street behind the cylinder are disclosed. The simulation results predict the wake length and shedding frequency well for the flow behind the large cylinder but fail to capture the dynamics of the flow near the step in diameter to some extent and the flow behind the small cylinder to a larger extent when compared with measurements.

Suggested Citation

  • S. M. Sayeed-Bin-Asad & Tord Staffan Lundström & Anders Gustav Andersson, 2017. "Study the Flow behind a Semi-Circular Step Cylinder (Laser Doppler Velocimetry (LDV) and Computational Fluid Dynamics (CFD))," Energies, MDPI, vol. 10(3), pages 1-13, March.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:3:p:332-:d:92608
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/10/3/332/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/10/3/332/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. O. Akanyeti & P. J. M. Thornycroft & G. V. Lauder & Y. R. Yanagitsuru & A. N. Peterson & J. C. Liao, 2016. "Fish optimize sensing and respiration during undulatory swimming," Nature Communications, Nature, vol. 7(1), pages 1-8, April.
    Full references (including those not matched with items on IDEAS)

    Citations

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


    Cited by:

    1. Yantao Yin & Shicong Li & Liangbi Wang & Mei Lin & Qiuwang Wang, 2018. "Force Analysis of a Circular Cylinder at Ununiformed Flow in a T Pipe Junction," Energies, MDPI, vol. 11(4), pages 1-21, April.
    2. Bjørn H. Hjertager, 2017. "Engineering Fluid Dynamics," Energies, MDPI, vol. 10(10), pages 1-2, September.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.

      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:gam:jeners:v:10:y:2017:i:3:p:332-:d:92608. 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.

      If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.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.