Single cavitation bubble generation and observation of the bubble collapse flow induced by a pressure wave

Yang, Sheng‐Ming; Jaw, Shenq-Yuh; Yeh, Kuo‐Chen

doi:10.1007/s00348-009-0670-1

Cited by 21 publications

(8 citation statements)

References 38 publications

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“…More studies [Ohl, 2002;Buogo and Cannelli, 2002;Abe et al, 2007;Yang et al, 2009;Aghdam et al, 2012] were carried out to comprehend the inception and the evolution of one single cavitation bubble. However, even in these cases, the single bubble is mostly formed after the coalescence of a multitude of small bubbles that appear in the early stage of the bubble inception.…”

Section: Introductionmentioning

confidence: 99%

Interactions by Exchange of Volume Between Two Spherical Bubbles

Maiga

Coutier-Delgosha

Buisine

2014

Int. J. Appl. Mechanics

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. In this paper, by using the system potential of two bubbles and with a special interest in the interaction by exchange of volume and without exchange of mass, a system of equations governing the evolution of two bubbles is proposed. This two-bubble model shows terms that do not appear in the models of interaction between bubbles. The twobubble model is compared with the modified Rayleigh-Plesset equation and a validation with the experimental study of Ohl [2002] is presented. The numerical results show that, on one hand, the development of small nearby bubbles can slow down the evolution of the biggest local one, while their disappearance can favor its growing. Furthermore, in the case of two bubbles in particular, the small bubble exchanges volume with the big one during their evolutions. On the other hand, contrary to the modified Rayleigh-Plesset model, the two-bubble model predicts appearance and disappearance of small bubbles in the neighborhood of the big bubble as it is observed in the experimental study of Ohl [2002].The present findings show in particular that the interaction by exchange of volume can be very important in the cavitation born phase and it is necessary to take into account the interaction between bubbles as well as the disappearance of small ones on the evolution of the biggest local bubble. Also, this two-bubble model predicts an exchange of volume between both bubbles equal to zero when they are perfectly identical.

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Section: Introductionmentioning

confidence: 99%

Interactions by Exchange of Volume Between Two Spherical Bubbles

Maiga

Coutier-Delgosha

Buisine

2014

Int. J. Appl. Mechanics

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“…Because the micro-jet could only be observed under the condition of 1 < H/R 0 < 3, 33,36 the P jet on the specimen surface changes from 131 MPa to 1186 MPa when S & 0, while the maximal P jet on the specimen surface is less than 1186 MPa because of the bubblebubble interaction (S > 0). Since the yield strength of 6061 alloy is about 240 MPa, the many micro jets in the thin liquid layer can damage the specimen surface when the pressure is higher than the yield strength of the 6061.…”

Section: Cavitation Erosion By Bubble Cloudmentioning

confidence: 99%

Bubble–bubble interaction effects on multiple bubbles dynamics in an ultrasonic cavitation field

Cheng

Zhao

2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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A vibratory erosion test rig is used to study the cavitation erosion of 6061 alloy. Some craters and material fracture are found on the specimen surface at the beginning of test. A cavitation model in an ultrasonic field is developed by applying the bubble–bubble interaction effect into Keller–Miksis equation to obtain the bubbles dynamic characteristics. The results reveal that the bubble cloud configuration is suitable for the explanation of cavitation erosion, and the erosion surfaces of the specimen were subjected to the effect of both massive bubbles collapsing, occurring in the thin liquid layer between the horn and the specimen. It is concluded that the optimal coupling strength of bubbles increases with the decrease of the bubble initial radius, and stable cavitation only occurs when the acoustic pressure amplitude is higher than a threshold value, which can well predict the experimental results.

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“…It could make it possible to acquire new power generation possibilities in order to achieve clean technology and energy savings which can be well generated in micro scale. Many studies have revealed that the collapse process of a cavitation bubble is extremely violent, and within the bubble, the gas can become extremely hot in micro/nano scale [1,2]. Hydrodynamic cavitation occurs in micro channels as a result of flow constriction.…”

Section: Introductionmentioning

confidence: 99%

Hysteresis in Cavitating Flows within Transparent Microchips

Özdemir¹,

Ozer²,

Deprem³

et al. 2018

Proceedings of the 10th International Symposium on Cavitation (CAV2018)

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Cavitation phenomenon has attracted much attention in engineering applications so the industry has provided considerable funding during recent years. Despite the simplicity and rather low price of small devices generating cavitation bubbles, the physics behind the creation and collapse of these bubble is still not well understood particularly in micro/nano scale. The assessment of size effects is vital for the design and development of new generation microfluidic devices involving phase change. Additionally, as the length scale decreases, surface nuclei dominate and dictate cavitation events. The modifications in the microchip geometry and enhancement in the micro device performance in applications involving cavitation will lead to increased cavitation bubbles number, reduced noise, improved bubbles collapse and increased energy sustainability. This study aims to investigate the creation of cavitation bubbles and classify the cavitating flow patterns in a novel roughened microchannel configuration. Cavitating flows are characterized in a transparent microchannel configuration in order to achieve a comprehensive understanding of cavitation inception and collapse in micro scale, which are crucial in the development of new-generation energy harvesting systems. In this device, a restrictive element and a big channel downstream of the restrictive element are mainly considered. The microchip consists of two main wafers, namely silicon and glass, which are anodically bonded together to withstand high pressures. The flow rate and discharge are evaluated at the outlet of the channels to characterize the chocking flow conditions in micro scale. The flow characteristics are determined to recognize differences in flow physics between smooth and roughened micro channels. Moreover, cavitation number, which is a major parameter for flow patterns, is considered in order to have valuable insights to the inception, development and collapse of the cavitation phenomenon in micro scale. Furthermore, the surface characteristics are also considered in detail in the microchip, and the effect of surface roughness on cavitating flows is investigated.

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Single cavitation bubble generation and observation of the bubble collapse flow induced by a pressure wave

Cited by 21 publications

References 38 publications

Interactions by Exchange of Volume Between Two Spherical Bubbles

Interactions by Exchange of Volume Between Two Spherical Bubbles

Bubble–bubble interaction effects on multiple bubbles dynamics in an ultrasonic cavitation field

Hysteresis in Cavitating Flows within Transparent Microchips

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