Experimental and numerical investigations of the collapse of a laser-induced cavitation bubble near a solid wall

Zhang, Jiayun; Yuxin, Du; Liu, Jiaqi; Sun, Yurong; Yao, Zhifeng; Zhong, Qiang

doi:10.1007/s42241-022-0017-4

Cited by 36 publications

(7 citation statements)

References 15 publications

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“…Cavitation theory suggests that a threshold value of sound intensity is required to produce cavitation [66] , [67] , and the formula for calculating the cavitation threshold can be expressed as follows:

where

is the static pressure in the liquid;

is the vapor pressure inside the bubble;

is the surface tension coefficient; and

is the radius of the cavitation nucleus (radius of the bubble).…”

Section: Theory and Calculationmentioning

confidence: 99%

Piezoelectric atomization of liquids with dynamic viscosities up to 175 cP at room temperature

Xie

Zeng

Gui

et al. 2023

Ultrasonics Sonochemistry

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where

is the static pressure in the liquid;

is the vapor pressure inside the bubble;

is the surface tension coefficient; and

is the radius of the cavitation nucleus (radius of the bubble).…”

Section: Theory and Calculationmentioning

confidence: 99%

Piezoelectric atomization of liquids with dynamic viscosities up to 175 cP at room temperature

Xie

Zeng

Gui

et al. 2023

Ultrasonics Sonochemistry

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“…The focus point is above the aluminum alloy plate, where plasma is produced due to the ultrahigh laser energy and rapidly evolves into a cavitation bubble. For more details of the experiment apparatus, see in Ref [29][30].…”

Section: Experiments Setupmentioning

confidence: 99%

Investigations of the dynamical behaviors of a millimeter-scale cavitation bubble near the rigid wall

Zi,

He,

Yao

et al. 2023

Preprint

Self Cite

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The collapse of the cavitation bubble near the rigid wall emits shock waves and creates micro-jet, causing cavitation damage and operation instability of the hydraulic machinery. In this paper, the millimeter-scale bubble near the rigid wall was investigated experimentally and numerically with the help of a laser photogrammetry system with nanosecond-micron space-time resolution and the open source package OpenFOAM-2212. The morphological characteristics of the bubble during its growth phase, collapse phase and rebound phase were observed by experiment and numerical simulation, and characteristics of the accompanying phenomena including the shock wave propagation and micro-jet evolution were well elucidated. The numerical results agree well with the experimental data. The bubble starts from a tiny small size with high internal pressure and expands into a sphere with a radius of 1.07mm for γ=d/Rmax=1.78. The bubble collapses into a heart shape and moves towards to the rigid wall during its collapse phase, resulting in a higher pressure load for the rigid wall in the second collapse. The maximum pressure of the shock wave of the first bubble collapse phase reaches 5.4MPa, and the velocity of the micro-jet reaches approximately 100m/s. This study enriches the existing experimental and numerical results of the dynamics of the near-wall cavitation bubble.

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“…where ∇ • (α l α v U r ) is introduced to ensure a sharp liquid-vapor interface [32,33]. U r is the relative velocity between the liquid phase and the vapor phase [34].…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical Investigation of Cavitation Bubble Jet Dynamics near a Spherical Particle

Hu,

Liu,

Liu

et al. 2023

Symmetry

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Synergistic interaction between cavitation bubbles and particles is critical for the operational performance of hydro turbines. The jet dynamics near the wall have been extensively investigated; however, the jet dynamics near the particles are not clear. In the present paper, the bubble jet dynamics near a spherical particle are numerically investigated based on a compressible two-phase flow solver considering the effects of heat transfer and mass transfer between the phases. Furthermore, the effect of the distance between the particle and the initial position of the bubble on the jet characteristics is analyzed in detail. Based on the simulations, three typical cases (i.e., jet during the rebound stage, jet pointing towards the particle, two jets facing each other) of jet behavior are categorized together with the range of dimensionless parameters. As the distance between the particle and the bubble increases, the three cases of jet impacts occur in the rebound stage, in the first period, and in the transition from the first period to the rebound stage, respectively.

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Experimental and numerical investigations of the collapse of a laser-induced cavitation bubble near a solid wall

Cited by 36 publications

References 15 publications

Piezoelectric atomization of liquids with dynamic viscosities up to 175 cP at room temperature

Piezoelectric atomization of liquids with dynamic viscosities up to 175 cP at room temperature

Investigations of the dynamical behaviors of a millimeter-scale cavitation bubble near the rigid wall

Numerical Investigation of Cavitation Bubble Jet Dynamics near a Spherical Particle

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