Importance of Sonication and Solution Conditions on the Acoustic Cavitation Activity

Lee, Judy

doi:10.1007/978-981-287-278-4_10

Cited by 12 publications

(3 citation statements)

References 88 publications

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“…Carrying a normal distribution function (NDF) analysis [42] for the SL intensities of individual bubbles, which correlate with their size [15] , [42] , showed that DFUS makes the bubbles smaller as well as more uniform ( Fig. S3 of the supplementary data ).…”

Section: Discussionmentioning

confidence: 99%

“…Sonodegradation is based on the severe implosion of the cavitation bubbles formed during the sonication of an aqueous solution, which results in a transient pressure and temperature rise (∼5000 K and ∼1000 bar) in the bubbles’ cores [15] , [16] . These severe conditions lead to the formation of nonequilibrium plasma inside the bubbles [17] and cause the water and oxygen molecules inside the bubbles to break and form reactive oxidative species (ROS) such as HO•, that can degrade organic compounds at the interface and to some extent in the bulk solution [15] , [18] . Also, the severe collapse condition of the cavitation bubbles might result in the pyrolysis of the volatile organic compounds that can enter the cavitation bubbles [19] , [20] .…”

Section: Introductionmentioning

confidence: 99%

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Impact of sonication power on the degradation of paracetamol under single- and dual-frequency ultrasound

Zare,

Bussemaker,

Serna-Galvis

et al. 2023

Ultrasonics Sonochemistry

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of sonication power on the degradation of paracetamol under single- and dual-frequency ultrasound

Zare,

Bussemaker,

Serna-Galvis

et al. 2023

Ultrasonics Sonochemistry

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“…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. The most likely reason for this is the clearer role played by surface modification in controlling boundary layer separation than 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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Novel ultrasonic pretreatment for HTC carbon nanosphere size control without yield compromise

2022

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Importance of Sonication and Solution Conditions on the Acoustic Cavitation Activity

Cited by 12 publications

References 88 publications

Impact of sonication power on the degradation of paracetamol under single- and dual-frequency ultrasound

Impact of sonication power on the degradation of paracetamol under single- and dual-frequency ultrasound

Cavitation control using passive flow control techniques

Novel ultrasonic pretreatment for HTC carbon nanosphere size control without yield compromise

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