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Cavitation Bubble - DOAJ

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Last Updated: 06 September 2022

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Retardant Effects of Collapsing Dynamics of a Laser-Induced Cavitation Bubble Near a Solid Wall

The dynamic behavior of cavitation bubbles near a wall is experimentally investigated in this paper, with a focus on the bubble's devolutionary characteristics. The effects of non-dimensional bubble−wall distance on the bubble collapsing dynamics are qualitatively and quantitatively investigated during the data analysis, including the interface evolution, the pole velocities, and the movement of the bubble centroid. Eventually, a physical interpretation of the phenomenon based on the bubble theory is provided, as well as a rough estimate of the effect caused water hammer pressure following the bubble demise.

Source link: https://doi.org/10.3390/sym11081051


Theoretical investigation and experimental support for the cavitation bubble dynamics near a spherical particle based on Weiss theorem and Kelvin impulse

With the related experimental findings as the clear support, Then, the in-depth theoretical investigation is carried out in terms of the liquid flow field and the bubble Kelvin impulse. The applicability range of the Kelvin impulse theory for the bubble near the spherical particle is approximately the same as the dimensionless distance between the bubble and particle is greater than 0. 50, according to our study. The effect of the particle on the liquid velocity between the bubble and the particle is mainly shown in the form of the image bubble, which often leads the liquid velocity in this region to be significantly lower than other regions. paraphrasedoutput:u00d710u22127 kg) is the average movement speed of the bubble centroid, which can be accurately predicted by establishing a tangent function between the Kelvin impulse and the velocity, with the relationship constant equal to 3. 57 u. d710 u22126 kg.

Source link: https://doi.org/10.1016/j.ultsonch.2022.106130

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions