Bubble Plume in Horizontal Flow

Abstract

This paper presentes the results of experimental and theoretical investigations on the chracteristics of two-dimensional inclined bubble plume. The inclined bubble plume forms when bubbles are released from air line source oriented perpendicular to a horizontal flow. For the measurement of velocity, a propeller-type current meter is used and an air volume fraction is measured using a conductivity probe. From the result of measurements, we find that the inclined bubble plumes are divided into two categories. The velocity and the angle of inclination of bubble plume are obtained theoretically, applying the equations of continuity, momentum and volume conservation of air bubbles to a model based on the assumption which turbulent diffusion is neglected for simplicity. This theoretical result is compared with our experimental data.