Journal
WATER
Volume 13, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/w13040465
Keywords
confluence; hydrodynamics; shear layer; mixing layers; flow mechanisms
Categories
Funding
- FEDER and Science and Technology Foundation [PTDC/ECI-EGC/31771/2017]
- Fundação para a Ciência e a Tecnologia [PTDC/ECI-EGC/31771/2017] Funding Source: FCT
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The study found that changes in the difference between momentum ratios in tributaries have a significant impact on the size and location of flow mechanisms at confluences.
River channel confluences are rather important interfaces where intense changes in physical, mixing and sediment transport processes occur. Following an experimental campaign, the main flow mechanisms in confluences and the development of the shear layer formed between the two tributary flows are presented. As the experimental flow cases comprised changes in the flow discharge and channel widths of the tributaries, the influence of width and discharge ratios on the turbulent flow structure and shear layer is also evaluated. Main findings indicate that changes in the difference between momentum ratio in the tributaries have a significant effect on the magnitude and location of flow mechanisms.
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