| As stated in the previous slide, we can
improve upon the assumption of bubble sphericity which is inherent in the
Gilmore-Akulichev model. This is necessary, because as this page will show,
even when it is far from a solid object like a kidney stone, a lithotripter
shock wave can cause a bubble to collapse in a non-spherical manner. Indeed
the jets produced by such collapses can be very effective in breaking up
kidney stones and other nearby solids, which intensify the tendency of the
bubble to lose sphericity when exposed to a lithotripsy shock pulse. |
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Click
here
to show the results of a CFD simulation. On the right you can
see how the geometry of the simulation is going to be laid out. The pressure
field is shown in the half-space above the axis of rotational symmetry in which
an initially spherical gas bubble in a compressible liquid is subjected to a
lithotripter shock wave.
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Go to any page in this presentation by clicking on the
relevant page number:
1,
2,
3,
4,
5,
6,
7,
8,
9,
10
For the
homepage of the Ultrasonics and Underwater Acoustics (UAUA) Centre, click © T G Leighton 2003
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