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Interacting bubble clouds and their sonochemical production [PDF]
The Journal of the Acoustical Society of America, 2013 An acoustically driven air pocket trapped in a pit etched on a surface can emit a bubble cluster. When several pits are present, the resulting bubble clusters interact in a nontrivial way. Fernández Rivas et al. [Angew. Chem. Int. Ed. 49, 9699–9701 (2010)] observed three different behaviors at increasing driving power: clusters close to their “mother ...
Stricker, Laura +3 more
openaire +3 more sources
Sterilization of Biofilm in Foam Using a Single Cavitation Bubble [PDF]
MATEC Web of Conferences, 2020 This article presents the sterilization of bacteria using cavitation bubbles. Cavitation generated by ultrasound creates a cavitation cloud. Therefore is more advantageous to generate the cavitation bubbles by laser-induced breakdown, because it is ...
Schovanec Petr +7 more
doaj +1 more source
Modeling and numerical simulation of the bubble cloud dynamics in an ultrasound field for burst wave lithotripsy. [PDF]
Proc Meet Acoust, 2018 Modeling and numerical simulation of bubble clouds induced by intense ultrasound waves are conducted to quantify the effect of cloud cavitation on burst wave lithotripsy, a proposed non-invasive alternative to shock wave lithotripsy that uses pulses of ...
Maeda K +4 more
europepmc +2 more sources
Effects of Polydispersity in Bubbly Flows [PDF]
, 2010 This thesis concerns the dynamics of bubbly flows with a distribution of equilibrium bubble sizes. The main goal is to formulate the physical and numerical models of continuum bubbly flows that enable us to efficiently compute the average mixture ...
Ando, Keita
core +1 more source
Remote sensing of bubble clouds in sea water [PDF]
Quarterly Journal of the Royal Meteorological Society, 2000 AbstractWe report on the influence of submerged bubble clouds on the re mote‐sensing properties of water. We show that the optical effect of bubbles on radiative transfer and on the estimate of the ocean colour is significant. We present a global map of the volume fraction of air in water derived from daily wind speed data.
Flatau, Piotr J. +3 more
openaire +2 more sources
Collective oscillations in a bubble cloud [PDF]
The Journal of the Acoustical Society of America, 1990 The literature contains substantial evidence that oceanic ambient noise is wind dependent over a broad frequency range [G. Wenz, J. Acoust. Soc. Am. 34, 1936 (1962)]. The nature of the source of low-frequency acoustic emissions is still unknown, although a correlation with breaking waves points toward the possibility, suggested by one of the authors [A.
S. W. Yoon +4 more
openaire +1 more source
Bubble formation at a flexible orifice with liquid cross-flow [PDF]
, 2004 In waste water treatment, biological processes for denitrification and nitrification are performed using oxidation ditches. In these reactors, the mixing and the aeration functions are dissociated: a bubble cloud is generated from flexible membrane ...
Hebrard, Gilles +3 more
core +1 more source
Clouds of bubbles in a viscoplastic fluid
Journal of Fluid Mechanics, 2021 Viscoplastic fluids can hold bubbles/particles stationary by balancing the buoyancy stress with the yield stress – the key parameter here is the yield number $Y$ , the ratio of the yield stress to the buoyancy stress. In the present study, we investigate a suspension of bubbles in a yield-stress fluid.
Emad Chaparian, Ian A. Frigaard
openaire +4 more sources
Laboratory-generated primary marine aerosol via bubble-bursting and atomization [PDF]
Atmospheric Measurement Techniques, 2010 A range of bubble and sea spray aerosol generators has been tested in the laboratory and compared with oceanic measurements from the literature. We have shown that the method of generation has a significant influence on the properties of the aerosol ...
E. Fuentes +4 more
doaj +1 more source
Discovery of a New Molecular Bubble–Outflow Structure in the Taurus B18 Cloud
The Astrophysical Journal, 2023 Star formation can produce bubbles and outflows, as a result of stellar feedback. Outflows and bubbles inject momentum and energy into the surrounding interstellar medium, and so are related to the overall energy balance of the molecular cloud. Molecular
Yan Duan +7 more
doaj +1 more source