Turbulent Flow Structure in a Confluence: Influence of Tributaries Width and Discharge Ratios

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 pr...

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Bibliographic Details
Published inWater (Basel) Vol. 13; no. 4; p. 465
Main Authors Alizadeh, Leila, Fernandes, João
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.02.2021
Subjects
Advertising campaigns
confluence
Contaminated sediments
Creeks & streams
Energy
Experiments
flow mechanisms
Fluid dynamics
Hydraulics
hydrodynamics
Influence
Interfaces
Laboratories
mixing layers
Morphology
Reynolds number
River channels
Rivers
Sediment transport
shear layer
Shear layers
Shear stress
Transport processes
Tributaries
Turbulence
Turbulent flow
Velocity
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Summary: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.
ISSN:2073-4441
2073-4441
DOI:10.3390/w13040465