IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v15y2023i14p11032-d1194090.html
   My bibliography  Save this article

Numerical Investigation of Scour Downstream of Diversion Barrage for Different Stilling Basins at Flood Discharge

Author

Listed:
  • Muhammad Waqas Zaffar

    (Department of Civil Engineering, Capital University of Science and Technology (CUST), Expressway, Kahuta Road Zone-V Sihala, Islamabad Capital Territory, Islamabad 44000, Pakistan)

  • Ishtiaq Hassan

    (Department of Civil Engineering, Capital University of Science and Technology (CUST), Expressway, Kahuta Road Zone-V Sihala, Islamabad Capital Territory, Islamabad 44000, Pakistan)

  • Umair Latif

    (Communication and Work Department (C&W), Government of Punjab, Lahore 54000, Pakistan)

  • Shah Jahan

    (Professional Engineer Construction Planning and Costing at DASU Hydropower Project, Kohistan 20100, Pakistan
    NUST Institute of Civil Engineering (NICE), Department of Construction Engineering and Management (CE&M), National University of Science and Technology (NUST), Islamabad 44000, Pakistan)

  • Zeeshan Ullah

    (NUST Institute of Civil Engineering (NICE), Department of Construction Engineering and Management (CE&M), National University of Science and Technology (NUST), Islamabad 44000, Pakistan)

Abstract

The hydraulic performance of stilling basins is affected by their size and geometry, which can be predicted by local scour. In 2008, based on a rigid bed study, the stilling basin of Taunsa barrage was remodeled, in which the old friction and baffle blocks were replaced with chute blocks and end sills. However, the study did not consider the effects of the remodeled basin on the erodible bed and only investigated hydraulic jumps. Therefore, this study developed FLOW-3D scour models for a designed flow of 24.28 m 3 /s/m to investigate the flow field and local scouring downstream of old and remodeled basins. The results showed that as compared to Large Eddy Simulation (LES) and Standard K-ε models, the Renormalization Group (RNG-K-ε) model predicted the scour profiles with better accuracy, for which the coefficient of determination (R 2 ) reached 0.736, 0.823, and 0.747 for bays 33, 34, and 55, respectively. Downstream of the remodeled basin, the net change in sediment bed was 88%, 91%, and 95% in the LES, Standard, and RNG-K-ε models, respectively. However, downstream of the old basin, the net change in sediment bed reached 51%. Conclusively, based on the results, the study suggests investigating scour downstream of Taunsa Barrage using other discharges and sediment transport rate equations.

Suggested Citation

  • Muhammad Waqas Zaffar & Ishtiaq Hassan & Umair Latif & Shah Jahan & Zeeshan Ullah, 2023. "Numerical Investigation of Scour Downstream of Diversion Barrage for Different Stilling Basins at Flood Discharge," Sustainability, MDPI, vol. 15(14), pages 1-23, July.
  • Handle: RePEc:gam:jsusta:v:15:y:2023:i:14:p:11032-:d:1194090
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/15/14/11032/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/2071-1050/15/14/11032/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Beom-Jin Kim & Jae-Hong Hwang & Byunghyun Kim, 2022. "FLOW-3D Model Development for the Analysis of the Flow Characteristics of Downstream Hydraulic Structures," Sustainability, MDPI, vol. 14(17), pages 1-17, August.
    Full references (including those not matched with items on IDEAS)

    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:jsusta:v:15:y:2023:i:14:p:11032-:d:1194090. 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.