The Physical Effects of Bubbles and Cavitation in High Intensity ...
The Physical Effects of Bubbles and Cavitation in High Intensity ...
The Physical Effects of Bubbles and Cavitation in High Intensity ...
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Geneology <strong>of</strong> <strong>Cavitation</strong><br />
Stable <strong>Cavitation</strong><br />
Drive bubble at low-moderate forc<strong>in</strong>g pressures<br />
Repetitive pulsations about an equilibrium radius<br />
Motion dom<strong>in</strong>ated by the compressibility <strong>of</strong> the gas<br />
Pressures <strong>of</strong> order 1-5 ATM (depend<strong>in</strong>g on frequency <strong>and</strong><br />
bubble size)<br />
Larger bubbles<br />
Rectified diffusion<br />
Acoustic emissions<br />
Harmonic<br />
Subharmonic<br />
Noise diagnostics<br />
F = 1 MHz<br />
Res ≈ 4-5 µm<br />
R 0 = 30 µm<br />
R Res<br />
8
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