Dynamics of nonspherical bubble in compressible liquid under the coupling effect of ultrasound and electrostatic field.

ABSTRACT: A model for a nonspherical bubble in a compressible liquid under the coupling effect of ultrasound and electrostatic field was developed in this study. The following assumptions are made: (1) the bubble undergoes adiabatic oscillation; (2) the gravity of the liquid is negligible; (3) the bubble is insulating. If the speed of sound approaches infinity (c→∞), the equation set is reduced to the equation set for an incompressible liquid. We found that, under ultrasonic irradiation coupled with electric stress, a nonspherical bubble cannot oscillate steadily in the liquid. The bubble is bound to collapse during several cycles. The presence of electric stress reduces the surface tension at the bubble wall, which produces a larger maximum bubble-radius during the rarefaction cycle and a smaller m

SUBMITTER: Deng JJ 

PROVIDER: S-EPMC8187881 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature