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Investigation of Hydraulic Characteristics of Stepped Labyrinth Weirs under Fixed Crest Length

Author

Listed:
  • Mehmet Cihan Aydin

    (Bitlis Eren University)

  • Ali Emre Ulu

    (Bitlis Eren University)

  • Ercan Işık

    (Bitlis Eren University)

Abstract

Labyrinth weirs can pass more flow than conventional weirs with fixed openings for the same headwater, thanks to their increased crest length. However, nappe interference and local submergence in downstream cycles reduce discharge efficiency. This study experimentally and numerically investigated stepped-in-plan labyrinth weirs, designed to minimize these issues. Four stepped weirs and a diagonal linear weir were tested under the same crest length and free overflow conditions, and compared with conventional labyrinth weirs. The results showed that, for constant crest length and head, discharge efficiency decreases with more steps, mainly due to flow separation and turbulence on the weir walls, unlike traditional labyrinth weirs.

Suggested Citation

  • Mehmet Cihan Aydin & Ali Emre Ulu & Ercan Işık, 2025. "Investigation of Hydraulic Characteristics of Stepped Labyrinth Weirs under Fixed Crest Length," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 39(7), pages 3295-3310, May.
    • Handle: RePEc:spr:waterr:v:39:y:2025:i:7:d:10.1007_s11269-025-04107-8
    DOI: 10.1007/s11269-025-04107-8
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    References listed on IDEAS

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    1. Mehrdad Doustkam & Mostafa Rahmanshahi & Manoochehr Fathi-Moghadam & Alireza Keramat & Huan-Feng Duan, 2024. "Experimental Study on the Hydraulic Performance of Porous Broad-Crested Weirs with Sloping Crests," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 38(12), pages 4783-4802, September.
    2. Ali Foroudi & Kiyoumars Roushangar & Mojtaba Saneie & Fatemeh Vojoudi Mehrabani & Farhad Alizadeh, 2022. "Evaluating the Effect of Downstream Channel Width Variation on Hydraulic Performance of Arched Plan Stepped Spillways," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 36(11), pages 4237-4253, September.
    3. Hossain Zare & Mohammad Vaghefi & Amin Mahmoudi & Abdol Mahdi Behroozi, 2023. "Experimental Exploration of Flow Hydraulics and Discharge Coefficient for an Inclined Circular Labyrinth Weir," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 37(11), pages 4521-4536, September.
    Full references (including those not matched with items on IDEAS)

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