Abstract
With the help of laser produced bubbles in water and high speed photography and holography sophisticated experiments on cavitation bubble dynamics can be conducted. The observation of a bubble vortex ring after jet formation upon collapse of a spherical bubble in front of a plane solid boundary is reported. The vortex ring may expand and contract several times until it disintegrates into a ring of bubbles by some instability finally taking over. A critical discussion of our qualitative understanding of jet formation is included. In a second part the problem of the acoustic cavitation noise spectrum is discussed. Numerically obtained ‘visible cavitation noise’ plots from a single bubble already resemble those obtained experimentally from acoustic cavitation. A discussion shows that the theory should be extended to self-consistency.
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Lauterborn, W. Cavitation bubble dynamics — new tools for an intricate problem. Applied Scientific Research 38, 165–178 (1982). https://doi.org/10.1007/BF00385946
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DOI: https://doi.org/10.1007/BF00385946