67th Annual Meeting of the APS Division of Fluid Dynamics (November 23, 2014 — November 25, 2014)
P0065: Kick a ball with a bubble
DOI: https://doi.org/10.1103/APS.DFD.2014.GFM.P0065
The image shows a cavitation bubble (on the right) as it induces the motion of a glass particle (on the left) tethered to a wire in water.
This cavitation bubble is caused by a 50-Volt spark at t=0 ms. In turn, this spark nucleates a bubble in water, creating fluid flows around it. As the cavitation bubble expands through t=0.33 ms, the fluidflows radially outward from the cavitation thereby pushing the glass particle away. The bubble reaches its maximum size at t=0.67 ms and starts to decrease its volume. At this shrinking stage, the bubble is no longer able to maintain its spherical shape as in t=0.99 ms, and will collapse in on itself next to the particle, “sucking” the surrounding fluid inward.
We plan to investigate the effect of particle size, density, distance from the cavitationbubble to understand the dynamics of the particle-bubble interaction.
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