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Experimental Exploration of Flow Hydraulics and Discharge Coefficient for an Inclined Circular Labyrinth Weir

Author

Listed:
  • Hossain Zare

    (Persian Gulf University)

  • Mohammad Vaghefi

    (Persian Gulf University)

  • Amin Mahmoudi

    (Persian Gulf University)

  • Abdol Mahdi Behroozi

    (University of Memphis)

Abstract

This study focuses on the experimental investigation of an inclined circular labyrinth weir with angles of inclination of 60, 70, 80, and 90 degrees. Additionally, the influence of different weir diameters (15, 20, 25, and 30 cm) under various flow rates on hydraulic performance and the discharge coefficient of the weirs were examined. Experimental results revealed that the flow over the weir initially exhibited a free flow type, transitioning to submerged flow as the flow rate increased. No air infiltration into the flow was observed. Moreover, an increase in the dimensionless ratio of the total hydraulic head to the inclined labyrinth weir's height led to a decrease in the discharge coefficient. The inclined weir with an angle of inclination of 60 degrees exhibited the highest discharge coefficient, while the vertical weir had the lowest coefficient. The analysis of weir diameter showed that although the initial highest discharge coefficient occurred at a 15 cm diameter, further variations in the discharge coefficients among different diameters were minimal, indicating an insignificant effect of weir diameter on the discharge coefficient. Overall, this study provides insights into the hydraulic behavior and discharge coefficient of inclined circular labyrinth weirs, contributing to the understanding and optimization of their performance in water management systems.

Suggested Citation

  • 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.
    • Handle: RePEc:spr:waterr:v:37:y:2023:i:11:d:10.1007_s11269-023-03577-y
    DOI: 10.1007/s11269-023-03577-y
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    References listed on IDEAS

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    1. Abdol Mahdi Behroozi & Mohammad Vaghefi, 2022. "Experimental and Numerical Study of the Effect of Zigzag Crests with Various Geometries on the Performance of A-type Piano Key Weirs," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 36(12), pages 4517-4533, September.
    2. Meysam Nouri & Parveen Sihag & Ozgur Kisi & Mohammad Hemmati & Shamsuddin Shahid & Rana Muhammad Adnan, 2022. "Prediction of the Discharge Coefficient in Compound Broad-Crested-Weir Gate by Supervised Data Mining Techniques," Sustainability, MDPI, vol. 15(1), pages 1-19, December.
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