Abstract
Bubbly flow shows complicated behavior due to a strong dynamic interaction between bubble and vortex motions. A technique for generating a strong surface flow by using a bubble curtain has been proposed by the authors. In the future, bubble curtain is expected to be a new type of oil fence because it can generate a strong and wide surface flow over the bubble generation system. The present paper is concerned with the mechanism of generating the surface flow. Furthermore, the internal two-phase flow structure of the surface flow generation induced by the bubble curtain is discussed using PIV (particle imaging velocimetry) measurement data after separating bubbles and particles from the original images.
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