Study of periodic 2-D eddies in compound open channels

Study of periodic 2-D eddies in compound open channels

In compound open channels, a shear instabilitiy generates periodic 2-D eddies at the junction between the main channel and the flood plains, so that a pair of vortex streets are formed at the both junctions. Velocity distribution in the channel is determined by the interaction between those two vort...

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Veröffentlicht in:PROCEEDINGS OF HYDRAULIC ENGINEERING 1994/02/28, Vol.38, pp.431-436
Hauptverfasser: IKEDA, Syunsuke, MURAYAMA, Nobuyoshi, KUGA, Takeshi
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Sprache:eng
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compound open channel
linear instability analysis
stability of Karman vortex street
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container_title PROCEEDINGS OF HYDRAULIC ENGINEERING
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creator IKEDA, Syunsuke
MURAYAMA, Nobuyoshi
KUGA, Takeshi
description In compound open channels, a shear instabilitiy generates periodic 2-D eddies at the junction between the main channel and the flood plains, so that a pair of vortex streets are formed at the both junctions. Velocity distribution in the channel is determined by the interaction between those two vortex streets. The period of the vortex is derived from a linear stability analysis. The experimental data support the results of the analysis. It is found from the experiments that the interaction between the vortex streets is emphasized when they are arranged in the stable order of the Karman vortex.
doi_str_mv 10.2208/prohe.38.431
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source J-STAGE Free; Freely Accessible Japanese Titles; Alma/SFX Local Collection
subjects compound open channel
linear instability analysis
stability of Karman vortex street
title Study of periodic 2-D eddies in compound open channels
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