The Path Transition from Zigzag to Spiral During the Single Bubble Motion
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In the previous two chapters (Chaps. 5 and 6), we confirm that the bubble motion is greatly influenced by imposing an external MF, which modifies the bubble shapes, the vortex structures, and also the rising paths. Meanwhile, the relations between the wake evolution and the path transition are more clear by investigating the transition process under the influence of the MF. However, the physical mechanics causing the path instability are still not so clear. In this chapter, we try to study a particular case of the vortex evolutions when the single bubble transits from zigzag to spiral.
KeywordsBubble Shape Zigzag Motion Vortex Pair Spiral Motion Bubble Surface
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