Numerical simulation of cavitation-bubble expansion and collapse inside a bottle subjected to impact on its topside

Chen, Yue-han; Jin, Zuanming; Li, Yu-tian

doi:10.1080/19942060.2021.1976279

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…The study of cavitation extends beyond inception, and a significant research effort has been dedicated to the study following growth and collapse stages of cavitation. Published studies [88][89][90] have considered the effect of shock waves, [91][92][93][94] refraction wave 91,95-100 thermal growth 95,[101][102][103][104][105][106][107][108][109] and fluids properties, 107,110,111 and, in particular, liquid compressibility and viscosity 110,[112][113][114][115][116][117] and the presence of noncondensable gas. [118][119][120] Not many studies, however, have focused on the effect of passive flow control on bubble growth and collapse.…”

Section: Physics Of Fluidsmentioning

confidence: 99%

Cavitation control using passive flow control techniques

et al. 2021

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Passive flow control techniques, and particularly vortex generators have been used successfully in a broad range of aero-and hydrodynamics applications to alter the characteristics of boundary layer separation. This study aims to review how such techniques can mitigate the extent and impact of cavitation in incompressible flows. This review focuses first on vortex generators to characterize key physical principles. It then considers the complete range of passive flow control technologies, including surface conditioning and roughness, geometry modification, grooves, discharge, injection, obstacles, vortex generators, and bubble generators. The passive flow control techniques reviewed typically delay and suppress boundary layer separation by decreasing the pressure gradient at the separation point. The literature also identifies streamwise vortices that result in the transfer of momentum from the free stream to near-wall low energy flow regions. The area of interest concerns hydraulic machinery, whose performance and life span are particularly susceptible to cavitation. The impact on performance includes a reduction in efficiency and fluctuations in discharge pressure and flow, while cavitation can greatly increase wear of bearings, wearing rings, seals, and impeller surfaces due to excessive vibration and surface erosion. In that context, few studies have also shown the positive effects that passive controls can have on the hydraulic performance of centrifugal pumps, such as total head and efficiency. It is conceivable that a new generation of design in hydraulic systems may be possible if simple design features can be conceived to maximize power transfer and minimize losses and cavitation. There are still, however, significant research gaps in understanding a range of impact factors such as manufacturing processes, lifetime, and durability, and essentially how a static design can be optimized to deliver improved performance over a realistic range of operating conditions.

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Section: Physics Of Fluidsmentioning

confidence: 99%

Cavitation control using passive flow control techniques

et al. 2021

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Numerical modelling and theoretical analysis of the acoustic attenuation in bubbly liquids

Mao-hai

Liang

et al. 2023

Engineering Applications of Computational Fluid Mechanics

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Evolution of pressure and cavitation in transition region walls for supercritical flow

Rovesht

Manafpour

Ebrahimnezhadian

2023

Journal of Water Supply: Research and Technology-Aqua

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Geometrical changes and high flow velocity cause flow separation and cavitation in the transition regions of hydraulic structures. A few studies have been conducted on the flow pressure and cavitation index in these regions, and the results need to be still improved. The present study examined the flow pressure and cavitation index variations for expansion angles between 0° and 10° and Froude numbers up to 20.1. Several relevant equations were also suggested to predict permissible angles in the transition regions. The results showed that negative pressure occurred at all lateral expansion angles except 0° when the Froude number was equal to or greater than ≥6.5. The cavitation phenomenon did not occur on the side walls for Froude number up to 4.49. However, the values of the cavitation index were reduced to less than the critical value for the Froude number of 14 when expansion angle was greater than 6°. The results also revealed that the side walls should not be expanded when Froude number was equal to or greater than 17.5. The occurrence of the cavitation on these walls substantially increased for Froude number of 20.1 even as expansion angle equals 0°.

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Numerical simulation of cavitation-bubble expansion and collapse inside a bottle subjected to impact on its topside

Abstract: To cite this article: Yue-han Chen, Jie-min Zhan & Yu-tian Li (2021) Numerical simulation of cavitation-bubble expansion and collapse inside a bottle subjected to impact on its topside, Engineering

Cited by 3 publications

References 27 publications

Cavitation control using passive flow control techniques

Cavitation control using passive flow control techniques

Numerical modelling and theoretical analysis of the acoustic attenuation in bubbly liquids

Evolution of pressure and cavitation in transition region walls for supercritical flow

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