Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/1560
Title: Determination of hydraulic characteristics of flow over a triangular sectioned weir by using experimental and numerical modeling
Authors: Yıldız, Ali
Martı, Ali İhsan
Göğüs, Mustafa
Keywords: Ansys-Fluent
Cfd
Labyrinth Weirs
Triangular Sectioned Weirs
Spillways
Aeration Performance
Labyrinth
Design
Publisher: UNIV TEHRAN, DANISHGAH-I TIHRAN
Abstract: The spillways of hydraulic structures transfer excessive water from dam reservoir to the downstream in a safe and controlled manner. A labyrinth or triangular weir is a flat spillway folded in plain view. The labyrinth weirs provide an increase in crest length for a given channel width and increase the flow capacity for a given weir load. As a result of the increased flow capacity, the labyrinth and triangular weirs require less space in the dam body than the flat weirs. In this study, experiments were carried out on the labyrinth weirs containing triangles of different heights and numbers by using 3 different weir heights (P=20cm, 30cm, and 40 cm) and 4 different weir shapes. Each experiment was repeated for 30 different discharge values. The effects of weir height and weir shape on the total head over the weir (H-T) and discharge (Q) were investigated. In addition, the numerical models of all experimental setups were created by ANSYS-Fluent program using Computational Fluid Dynamics (CFD). By comparing the results obtained from the numerical models with the physical models, the accuracy of the numerical models was tested. According to the results, as the number of the triangles (N) of the weir increases, the discharge coefficient (Ca) decreases. The weir height (P) does not have a major effect on the discharge.
URI: https://doi.org/10.22059/jcamech.2021.318239.594
https://hdl.handle.net/20.500.13091/1560
ISSN: 2423-6713
2423-6705
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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JCAMECH_Volume 52_Issue 2_Pages 215-232.pdf
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