Numerical modelling of acoustic cavitation threshold in water with non-condensable bubble nuclei

Abstract

Highlights A numerical model is presented for acoustic cavitation in water with non-condensable bubble nuclei. The phase change has a significant effect on bubble growth and collapse dynamics during acoustic cavitation. As the bubble nucleus size increases and the acoustic frequency increases, the cavitation threshold increases beyond the Blake threshold. The threshold predictions fitted as a function of bubble nucleus size and acoustic frequency can be applied to acoustic cavitation in water with a wide range of threshold data in the previous works.

Numerical investigation of two-microbubble collapse and cell deformation in an ultrasonic field

“…(14) are introduced to analyze the two-bubble motions in an ultrasonic field. Here, the maximum radii and of a single bubble are determined using the present numerical method or by solving the following Rayleigh-Plesset (RP) equation [6] . …”

“… [2] , [3] . Fundamental studies have also been reported on ultrasound-driven droplet vaporization [4] , [5] , acoustic cavitation with non-condensable bubble nuclei [6] , and bubble oscillation on a rigid boundary [7] , [8] , [9] .…”

Synergistic Enzyme‐Mimetic Catalysis‐Based Non‐Thermal Sonocavitation and Sonodynamic Therapy for Efficient Hypoxia Relief and Cancer Ablation

“…[26,27] Previous work involving the microbubbles contrast agents, [28,29] phase-shift perfluorooctyl bromide nanovesicles, [30] and perfluorohexane-encapsulated fullerene [31] into ultrasonic histotripsy has been proven to be an efficient method to increase cavitation nuclei and reduce cavitation threshold. [32][33][34][35] However, this method is still unsatisfactory since they allow cavitation for a very short time under pHIFU due to the rupture of their stabilizing gas shells. [36][37][38][39] Although gas-stable cavitation agents such as hollow mesoporous silica nanoparticles are stable, [40] they have a limited number of cavitation nuclei accommodated within hydrophobic pores.…”

Interactions of bubbles in acoustic Lichtenberg figure

“…If an acoustic wave generates a sufficient negative pressure when propagating in a liquid, gas nuclei can grow into cavitation bubbles and experience expansion, compression, and even collapse [1] . Ultrasonic cavitation has widespread application in various fields.…”