抄録
The plane bubble plume is simulated by the two-dimensional vortex method proposed by the authors in a prior paper. The existing numerical methods calculate the velocity field, but the vortex method analyzes directly the vorticity field. Therefore, the vortical structure predominating the bubble plume promises to be reasonably simulated by the vortex method. In a tank containing water, hydrogen bubbles with a diameter 0.12 mm are released from the electrode placed on the base of tank. The simulation makes clear that the meandering behavior of the bubble plume is caused by the large-scale eddies induced by the rising bubbles. The effect of bubble flow rate on the bubble plume is confirmed to agree with the experimental result, demonstrating that the present vortex method is usefully applicable to the analysis of plane bubble plume.
