Quantitative analysis of secondary Bjerkenes forces in various liquids

Abstract

Numerically calculating the interaction forces between two free bubbles under the action of a background of random acoustic radiation, we highlight the contributions of radiative coefficient and absorption damping coefficient to the size of these forces.It is quantitatively demonstrated, for different radii of the oscillating bubbles, that the scattering absorption forces and the scattering scattering forces are close in magnitude.For superfluid helium, the forces change direction, oscillatingly, and the ratio of the forces is much less than one.