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Discrete Vortex Simulation of Open-Channel Flows Including Bubble Plumes

Author(s): Michio Sanjou; Iehisa Nezu

Linked Author(s): Michio Sanjou

Keywords: Discrete vortex method; Bubble plume; Two-phase flows; Open-channel flow; CFD

Abstract: It is very important to reveal the hydrodynamic properties in open-channel flows including the rising-bubbles, when we consider effective control techniques of aeration in actual rivers, sedimentation basins and reservoirs. However, such a bubbly open-channel flow has very complicated phenomena, and thus there are few previous studies that have been tried by highaccurate measurements and numerical simulations. Therefore, in this study, the bubbly openchannel flow was calculated by using a discrete vortex method (DVM). The DVM is a gridless model and applicable to multi-phase flows such as air-induced flows and sediment laden flows. As the numerical results, it was found that the present model was able to predict the hydrodynamic properties observed in the experimental data.


Year: 2007

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