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Nonlinear increase in bubbles radii caused by sound in a bubbly liquid

100%
Perelomova A., Pelc-Garska W.
Open Physics
|
2012
|
vol. 10
|
issue 1
151-158
EN
The nonlinear interaction of acoustic and entropy modes in a bubbly liquid is considered. The reasons for interaction are both nonlinearity and dispersion. In the field of intense sound, a decrease in the mixture density is predicted. That corresponds to the well-established growth of bubbles volumes due to rectified diffusion. The nonlinear interaction of modes as a reason for a bubble to grow due to sound, is discovered. The example considers variation in the mixture density and bubbles radii caused by acoustic soliton.
2
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The vortex flow caused by sound in a bubbly liquid

80%
Perelomova A., Wojda P.
Open Physics
|
2014
|
vol. 12
|
issue 5
305-314
EN
Generation of vorticity in the field of intense sound in a bubbly liquid in the free half-space is considered. The reasons for generation of vorticity are nonlinearity, diffraction, and dispersion. Acoustic streaming differs from that in a Newtonian fluid. Under some conditions, the vortex flow changes its direction. Conclusions concern streaming induced by a harmonic or an impulse Gaussian beam.
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