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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : Flow structure in a mixing layer
Flow structure in a mixing layer
Results of a high resolution Detached Eddy Simulation (DES) are used to characterize the evolution of a shallow mixing
layer developing between two parallel streams in a long open channel with a flat bed at a high Reynolds number
(ReD=160,000). The influence of Reynolds number on the development of the mixing layer as well as the vertical nonuniformity
in the mixing layer structure is discussed. The numerical results show that as Reynolds number increases, the
mixing layer development ceases earlier. Mixing layer growth rate and its change in the vertical direction at ReD=160,000
are compared with experiments and a simulation at ReD=16,000. Passive scalar is introduced at the tip of the splitter plate
close to the free surface to estimate the size of the mixing structures based on mass transport. The effect of the Reynolds
number on the shift of the centerline of the mixing layer is quantified.
File Size : 585,377 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 17/08/2015
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