Junjie Jiao

TL;DR: Experimental data is provided on the effect of a range of bubble sizes, distances, acoustic pressures, and frequencies on the relative acceleration of two approaching bubbles and the secondary Bjerknes force was calculated and compared to the experimental data.

TL;DR: Experimental data is provided that validates the theory on the movement of bubbles and forces acting between them in an acoustic field that will be useful in understanding bubble coalescence in anoustic field.

TL;DR: It was found that under the influence of an acoustic field, the coalescence time could be probabilistic in nature, exhibiting upper and lower limits of coalescence times which are prolonged when both the maximum surface approach velocity and secondary Bjerknes force increases.

TL;DR: In this article, the authors proposed a gas equation of state (EOS) combining the pvk form, Jones-Wilkins-Lee (JWL) EOS, and the initial states of a bubble to take the effects of the initial bubble pressure and detonation products state transformation into account; furthermore, the bubble radius, velocity and acceleration vs time were obtained through the Rayleigh-Plesset equation under their experimental condition.

TL;DR: The translational trajectory of bubble in an ultrasonic standing wave at 22.4 kHz was observed using an imaging system with a high-speed video camera, which allowed the velocities of bubble to be measured when the acoustic pressure was measured, and the history force was indirectly measured by using the acoustic and hydrodynamic forces balance model.