Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics

Mehmet Cihan Aydın; Ali Emre Ulu

doi:10.17798/bitlisfen.1730435

Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics

Abstract

Weirs are among the most critical hydraulic structures employed for the con-trolled conveyance of water in open channel systems. In conventional free over-flow weirs, the discharge capacity is predominantly a function of the upstream head. However, for operational efficiency and stability, it is often undesirable for the upstream water level to vary significantly with changes in flow rate. To over-come this limitation, labyrinth weirs—particularly sharp-crested types—have gained prominence in recent years due to their ability to increase the effective crest length within a limited channel width. The extended crest length enhances the discharge capacity at a given head, making labyrinth weirs more efficient than linear-crested weirs. Over the years, various labyrinth weir geometries, including trapezoidal, triangular, and piano key configurations, have been explored to improve hydraulic performance. Recently, new forms such as circular and diagonally stepped labyrinth weirs have been introduced. Circular labyrinth weirs offer improved discharge efficiency by minimizing nappe interference and reducing submergence at the weir cycles. On the other hand, diagonally stepped labyrinth weirs aim to enhance flow capacity at a constant head and crest length through steep downstream alignments. This study combines on the hydraulic performance of circular and diagonal stepped labyrinth weirs. Numerical model validation was conducted based on established findings from previous studies. Utilizing these validated models, a novel nappe breaker configuration was introduced and the discharge performance of stepped circular labyrinth weirs was comparatively assessed in plan view.

Keywords

Ethical Statement

The study is complied with research and publication ethics.

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Details

Primary Language

English

Subjects

Hydrodynamics and Hydraulic Engineering, Numerical Modelization in Civil Engineering

Journal Section

Research Article

Authors

Mehmet Cihan Aydın
0000-0002-5477-1033
Türkiye

Ali Emre Ulu ^*
0000-0001-7499-3891
Türkiye

Publication Date

December 31, 2025

Submission Date

June 30, 2025

Acceptance Date

December 23, 2025

Published in Issue

Year 2025 Volume: 14 Number: 4

DOI

https://doi.org/10.17798/bitlisfen.1730435

IZ

https://izlik.org/JA42CC93PE

Cite

RIS / Bibtex

APA

Aydın, M. C., & Ulu, A. E. (2025). Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, 14(4), 2324-2335. https://doi.org/10.17798/bitlisfen.1730435

AMA

1.Aydın MC, Ulu AE. Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi. 2025;14(4):2324-2335. doi:10.17798/bitlisfen.1730435

Chicago

Aydın, Mehmet Cihan, and Ali Emre Ulu. 2025. “Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics”. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi 14 (4): 2324-35. https://doi.org/10.17798/bitlisfen.1730435.

EndNote

Aydın MC, Ulu AE (December 1, 2025) Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi 14 4 2324–2335.

IEEE

[1]M. C. Aydın and A. E. Ulu, “Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics”, Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, vol. 14, no. 4, pp. 2324–2335, Dec. 2025, doi: 10.17798/bitlisfen.1730435.

ISNAD

Aydın, Mehmet Cihan - Ulu, Ali Emre. “Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics”. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi 14/4 (December 1, 2025): 2324-2335. https://doi.org/10.17798/bitlisfen.1730435.

JAMA

1.Aydın MC, Ulu AE. Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi. 2025;14:2324–2335.

MLA

Aydın, Mehmet Cihan, and Ali Emre Ulu. “Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics”. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, vol. 14, no. 4, Dec. 2025, pp. 2324-35, doi:10.17798/bitlisfen.1730435.

Vancouver

1.Mehmet Cihan Aydın, Ali Emre Ulu. Hydraulic Performance Analysis of Diagonally Aligned Circular Labyrinth Weirs Using Computational Fluid Dynamics. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi. 2025 Dec. 1;14(4):2324-35. doi:10.17798/bitlisfen.1730435

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https://doi.org/10.1080/09715010.2026.2649317