Investigation on laser-induced bubble collapse among triple particles based on high-frame-rate photography and the Kelvin impulse model

Physics of Fluids, Год журнала: 2024, Номер 36(5)

Опубликована: Май 1, 2024

In fluid machinery, the concurrent presence of cavitation bubbles and particle clusters leads to considerably damage material surfaces. This study investigates dynamics a bubble situated among triple particles based on Kelvin impulse model high-frame-rate photography, focusing impact dimensionless distance size. Specifically, jet, motion, interface evolution characteristics are quantitatively evaluated. The following conclusions obtained: (1) collapse shapes can be divided into three typical cases: equilateral triangle shape, isosceles arcuate shape. (2) Among particles, four zero-Kelvin-impulse locations present, around which jet direction is extremely sensitive initial position. As position moves along central line, motion dramatically changes during its collapse. (3) relative key parameter that affects dynamics. bubble–particle decreases, non-uniformity morphology will become more significant.

Язык: Английский

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Simultaneous resonance characteristics of cylindrical bubbles under dual-frequency acoustic excitation based on singular-perturbation theory

Physics of Fluids, Год журнала: 2024, Номер 36(10)

Опубликована: Окт. 1, 2024

The simultaneous resonance patterns and dynamic attributes of cylindrical bubbles subjected to dual-frequency acoustic excitation are explored in this article. Specifically, analytical models local stability analysis constructed for different types under excitation. Based on the frequency response curve, mechanisms whereby core parameters influence resonant characteristics then explored. Combined with Lyapunov exponent amplitude, frequency, phase, bifurcation diagrams illustrated determining global bubble system. conclusions from research given as follows: (1) Under excitation, type can be subdivided into three categories, namely, primary–superharmonic, primary–subharmonic, superharmonic–subharmonic resonances. These exhibit unique significant characteristics. (2) Increasing total amplitude significantly enhances maximum value vulnerability instabilities. effect balance radius is similar that amplitude. Higher values nonlinear coefficient reduce increase likelihood instability. (3) a key factor affecting bubbles. As increases, oscillation gradually transforms periodic chaotic.

Язык: Английский

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Investigation on the primary resonance of a cylindrical bubble in compressible liquid

Physics of Fluids, Год журнала: 2024, Номер 36(11)

Опубликована: Ноя. 1, 2024

In the present paper, paramount characteristics of resonance cylindrical bubbles in a compressible liquid are theoretically investigated with multi-scale analysis. Considering liquid's compressibility, dimensionless equation bubble wall motion is established for primary under single-frequency acoustic field. Comparing numerical results, analytical solution verified terms accuracy. The key parameters on further explored including equilibrium radius, amplitude field, and other detuning parameters. main conclusions given as follows: (1) During resonance, three typical nonlinear phenomena observed: multivalued solutions, jumps, hysteresis phenomena. (2) compressibility affects intensity waves emitted by during resonance. maximum pressure at interface incompressible higher than that liquid. (3) amplitude–frequency curve, unstable region smaller peak lower

Язык: Английский

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Visualization of Bubble Collapse Dynamics

SpringerBriefs in energy, Год журнала: 2024, Номер unknown, С. 75 - 92

Опубликована: Янв. 1, 2024

Язык: Английский

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Prediction Model of Bubble Collapse Jet

SpringerBriefs in energy, Год журнала: 2024, Номер unknown, С. 51 - 73

Опубликована: Янв. 1, 2024

Язык: Английский

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Research on the dynamic characteristics of the cavitation bubble collapsing between multiple particles

Ultrasonics Sonochemistry, Год журнала: 2024, Номер 112, С. 107169 - 107169

Опубликована: Ноя. 19, 2024

Язык: Английский

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Theoretical and experimental research on the impacts of the Joukowsky hydrofoils on the bubble collapse dynamics within a confined space

Ultrasonics Sonochemistry, Год журнала: 2024, Номер 112, С. 107174 - 107174

Опубликована: Ноя. 24, 2024

Язык: Английский

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Dual-frequency excited combination resonance and global stability of an oscillating cylindrical bubble

Physics of Fluids, Год журнала: 2024, Номер 36(12)

Опубликована: Дек. 1, 2024

Based on the multi-scale method and Lyapunov stability theory, second-order analytical model of combination resonance under dual-frequency acoustic excitation an oscillating cylindrical bubble is established. The nonlinear dynamic characteristics additive subtractive are explored by analyzing frequency response curve global stability. primary findings given as follows: (1) exhibits complex characteristics, which manifested in multiple peaks unstable regions. (2) peak consists a single left small-amplitude double right. amplitude highly sensitive to changes core parameters, at top obvious. (3) composed large-amplitude double-peak single-peak When relatively high, three discontinuous regions will appear curve.

Язык: Английский

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Experimental investigation on cavitation bubble precipitation characteristics in sand-laden water

Journal of Hydrodynamics, Год журнала: 2024, Номер 36(6), С. 1033 - 1045

Опубликована: Дек. 1, 2024

Язык: Английский

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