Ibrahim, Izihan and Riviere, Nicolas and Lebouteiller, Ines and Mignot, Emmanuel (2022) Discharge distribution in open-channel T-shape bifurcations: effect of a reduced side branch width. Journal of Hydraulic Engineering, 148 (9). ISSN 0733-9429 E-ISSN 1943-7900 (In Press)
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Abstract
The primary challenge for river managers in handling open-channel bifurcations is the prediction of the discharge distribution to downstream branches. In this study, we aimed to summarize and complete the available database and empirical correlations for T-shape bifurcations at 90°, both in subcritical and transcritical flow regimes, in equal and reduced side branch width geometries. An experimental campaign generated a database of 668 new configurations in addition to 299 sets collected from the literature. The existing correlation for predicting the discharge distribution in the subcritical regime appears to be of limited agreement with these data, whereas a new empirical relationship significantly increases the accuracy and is useful for a side branch as narrow as a third of the main branch width. Regarding the free-recirculation transcritical regime, the present data validate the correlation proposed in 1967 for downstream branch ratios not tested by the authors. An approach was proposed to predict the flow discharge distribution for configurations without a priori knowledge of the flow regime.
| Item Type: | Article (Journal) |
|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TC Hydraulic engineering. Ocean engineering > TC160 Technical hydraulics T Technology > TC Hydraulic engineering. Ocean engineering > TC401 River, lake, and water-supply engineering (General) T Technology > TC Hydraulic engineering. Ocean engineering > TC530 River protective works. Regulation. Flood control T Technology > TC Hydraulic engineering. Ocean engineering > TC601 Canals and inlad navigation. Waterways |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Engineering > Department of Civil Engineering |
| Depositing User: | Ir. Izihan Ibrahim |
| Date Deposited: | 08 Jul 2022 13:21 |
| Last Modified: | 08 Jul 2022 13:21 |
| URI: | http://irep.iium.edu.my/id/eprint/98602 |
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