Proceedings of the 3rd International Conference on Science in Engineering and Technology (ICOSIET 2024)

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Experimental Study on Flow Over Labyrinth Weirs with Rounded Angle

Authors
Arody Tanga1, *, Muh. Galib Ishak1, Vera Wim Andiese1, Yassir Arafat1
1Civil Engineering Department of Tadulako University, Central Sulawesi, Indonesia
*Corresponding author. Email: tangaarody@gmail.com
Corresponding Author
Arody Tanga
Available Online 7 July 2025.
DOI
10.2991/978-94-6463-768-7_21How to use a DOI?
Keywords
Discharge Coefficient; Labyrinth Weir; Round Angle
Abstract

Compared to linear weirs, labyrinth weir can provide high flow capacity at lower heads achieved through the increase of the spillway length. However, apart from extending the length of the spillway, hydraulic efficiency can also be enhanced through geometric modifications. This experimental study aimed to analyze the hydraulic performance of labyrinth weirs with rounded angles. To fulfill the goals, three physical models made of acrylic were tested in a rectangular flume measuring 4.80 m in length, 50 cm in width, and 40 cm in height. The models were designed as triangular labyrinth weirs, varying the rounded radius (r) of the angles (e.g., r = 0, 30, and 60 mm), while maintaining a constant spillway length of L = 870 mm. The results showed that for r = 0 mm, the maximum of the discharge coefficients (Cd) was 0.85. For r = 30 mm, the maximum Cd increased to 0.88. However, for r = 60 mm, the maximum Cd decreased to 0.83. This indicates that a slight increase in the rounded radius of the angles enhances the Cd of the hydraulic weir, but further increases lead to a decrease in Cd.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 3rd International Conference on Science in Engineering and Technology (ICOSIET 2024)
Series
Advances in Engineering Research
Publication Date
7 July 2025
ISBN
978-94-6463-768-7
ISSN
2352-5401
DOI
10.2991/978-94-6463-768-7_21How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Arody Tanga
AU  - Muh. Galib Ishak
AU  - Vera Wim Andiese
AU  - Yassir Arafat
PY  - 2025
DA  - 2025/07/07
TI  - Experimental Study on Flow Over Labyrinth Weirs with Rounded Angle
BT  - Proceedings of the 3rd International Conference on Science in Engineering and Technology (ICOSIET 2024)
PB  - Atlantis Press
SP  - 188
EP  - 195
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-768-7_21
DO  - 10.2991/978-94-6463-768-7_21
ID  - Tanga2025
ER  -