Nonspherical Collapse of Single Bubbles Near Boundaries and in Confined Spaces

Cavitation bubble interaction with compliant structures on a microscale: A contribution to the understanding of bacterial cell lysis by cavitation treatment

“…Thus a here considered phenomenon falls into a broader scope of bubble-structure interaction studies. Modes of single bubble collapse in vicinity of various boundaries and their underlying mechanisms have been a subject of extensive research in the past due to a wide range of practical applications in a range of disciplines [18] . They can vary from spherical collapse, to micro-jet formation towards [19] or away from the boundary [20] .…”

“…Additionally, bubbles can also exhibit mushroom-shaped [23] and pear-shaped [24] collapse modes, or even develop multiple opposing jets that lead to bubble splitting and breakup into smaller fragments [25] . In general, bubble collapse dynamics is determined by multiple factors [18] , which are related to geometric configuration, material and structural properties of nearby boundaries, and the presence of other jet drives, e.g., shear flow, shock waves, gravity field, or even a presence of other bubbles. .…”

The evolution of cavitation in narrow soft-solid wedge geometry mimicking periodontal and peri-implant pockets

“…Additionally, bubbles can exhibit mushroom-shaped [17] and pear-shaped [27] collapse modes, or even develop multiple opposing jets that lead to bubble splitting and a break up into smaller fragments [28] . In general, the bubble shape and dynamics are primarily determined by the geometric configuration, structural properties of the boundary material, and the distance from the boundary [29] .…”

A lattice Boltzmann study of the thermodynamics of an interaction between two cavitation bubbles

“…With the recovery of the surrounding liquid pressure or movement of the bubble to a high-pressure region, the bubble collapse rapidly, the whole process is defined as the hydrodynamic cavitation. In experimental studies, energy deposition techniques are often used in cavitation bubble generation, in which heat is introduced to the system to generate bubbles [44]. Although the inception of the cavitation bubble in the experimental studies is different from hydrodynamic cavitation, researchers indicated that the subsequent evolution of both is the same.…”

“…Although the inception of the cavitation bubble in the experimental studies is different from hydrodynamic cavitation, researchers indicated that the subsequent evolution of both is the same. The radii evolution can be predicted using the R-P equation when a single bubble evolves in the infinite region [44].…”