Inhibition of nonlinear acoustic cavitation dynamics in liquid CO2

Iersel, MM Maikel van; Cornel, Jan H.; Benes, Nieck E.; Keurentjes, Jtf Jos

doi:10.1063/1.2434962

Cited by 13 publications

(10 citation statements)

References 26 publications

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“…13 In accordance with this work, high-speed images acquired during the sonication of a similar mixture confirm that the cavities display hardly any radial motion. Although the experimental conditions have been varied extensively, nonlinearly oscillating cavities cannot be resolved from these images, thereby suggesting that acoustic cavitation does not occur in pressurized CO 2 .…”

Section: Resultssupporting

confidence: 68%

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Sound-driven fluid dynamics in pressurized carbon dioxide

Iersel

Mettin

Benes

et al. 2010

The Journal of Chemical Physics

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Note: Measurement method for sound velocity of melts in large volume press and its application to liquid sodium up to 2.0 GPa Rev. Sci. Instrum. 82, 086108 (2011) Dispersion and attenuation on the Brillouin sound waves of a lubricant: Di(2-ethylhexyl) sebacate under high pressures J. Appl. Phys. 110, 033538 (2011) Sound dispersion and attenuation in concentrated H2SO4 by visible and ultraviolet Brillouin spectroscopy J. Chem. Phys. 135, 034503 (2011) Sub-wavelength phononic crystal liquid sensor J. Appl. Phys. 110, 026101 (2011) Additional information on J. Chem. Phys. Using high-speed visualization we demonstrate that ultrasound irradiation of pressurized carbon dioxide ͑CO 2 ͒ induces phenomena that do not occur in ordinary liquids at ambient conditions. For a near-critical mixture of CO 2 and argon, sonication leads to extremely fast local phase separation, in which the system enters and leaves the two-phase region with the frequency of the imposed sound field. This phase transition can propagate with the speed of sound, but can also be located at fixed positions in the case of a standing sound wave. Sonication of a vapor-liquid interface creates a fine dispersion of liquid and vapor, irrespective whether the ultrasound horn is placed in the liquid or the vapor phase. In the absence of an interface, sonication of the liquid leads to ejection of a macroscopic vapor phase from the ultrasound horn with a velocity of several meters per second in the direction of wave propagation. The findings reported here potentially provide a tunable and noninvasive means for enhancing mass and heat transfer in high-pressure fluids.

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Section: Resultssupporting

confidence: 68%

“…Recent numerical modeling work has demonstrated that nonlinear cavity dynamics in high-pressure CO 2 appears improbable. 13 The present work elaborates on this numerical study and investigates the governing processes upon sonication of pressurized CO 2 by means of high-speed visualization techniques.…”

Section: Introductionmentioning

confidence: 99%

Sound-driven fluid dynamics in pressurized carbon dioxide

Iersel

Mettin

Benes

et al. 2010

The Journal of Chemical Physics

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“…Hence, in the present paper, a quantitative analysis of non-spherical bubbles is also given for determining bubble instability in order to check the validity of the assumption of spherical bubbles employed in our model. Other applications of our approach include the development of high-frequency acoustic camera for high resolution imaging in turbid water [40,41] and green solvent using high-pressure liquid carbon dioxide [42][43][44] (noticing that large kR 0 in this case due to the limited value of sound speed).…”

Section: Introductionmentioning

confidence: 99%

Influences of non-uniform pressure field outside bubbles on the propagation of acoustic waves in dilute bubbly liquids

Zhang

2015

Ultrasonics Sonochemistry

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Predictions of the propagation of the acoustic waves in bubbly liquids is of great importance for bubble dynamics and related applications (e.g. sonochemistry, sonochemical reactor design, biomedical engineering). In the present paper, an approach for modeling the propagation of the acoustic waves in dilute bubbly liquids is proposed through considering the non-uniform pressure field outside the bubbles. This approach is validated through comparing with available experimental data in the literature. Comparing with the previous models, our approach mainly improves the predictions of the attenuation of acoustic waves in the regions with large kR0 (k is the wave number and R0 is the equilibrium bubble radius). Stability of the oscillating bubbles under acoustic excitation are also quantitatively discussed based on the analytical solution.

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“…40,42 Although it is unclear that a nonzero temperature difference T w À h w need be considered, 41 this modeling component is included for generality and consistency with prior work. 43,44 Although it is difficult to extrapolate the results from kinetic gas simulations to the conditions present in a collapsing bubble, values of f calculated by Sharipov and Kalempa 40 suggest that likely values range from about 2 to 2.5. We select a value f ¼ 2 here as a round number-results suggest that the model is not sensitive to this parameter.…”

Section: Heat Transportmentioning

confidence: 99%

“…Many of the same or similar formulations have been used in previous bubble models. 35,43,47 In the table, note that the properties are divided into three groups: in the top group, properties are initialized and not updated during integration; in the middle group, properties are updated after each integration time step; in the bottom group, properties are updated during each time step as an inherent part of the integration. To evaluate any fluid property under conditions beyond the range specified for the referenced correlation, the closest conditions within the specified range were used.…”

Section: Fluid Propertiesmentioning

confidence: 99%

A reduced-order, single-bubble cavitation model with applications to therapeutic ultrasound

Kreider

Crum

Bailey

et al. 2011

The Journal of the Acoustical Society of America

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Cavitation often occurs in therapeutic applications of medical ultrasound such as shock-wave lithotripsy (SWL) and high-intensity focused ultrasound (HIFU). Because cavitation bubbles can affect an intended treatment, it is important to understand the dynamics of bubbles in this context. The relevant context includes very high acoustic pressures and frequencies as well as elevated temperatures. Relative to much of the prior research on cavitation and bubble dynamics, such conditions are unique. To address the relevant physics, a reduced-order model of a single, spherical bubble is proposed that incorporates phase change at the liquid-gas interface as well as heat and mass transport in both phases. Based on the energy lost during the inertial collapse and rebound of a millimeter-sized bubble, experimental observations were used to tune and test model predictions. In addition, benchmarks from the published literature were used to assess various aspects of model performance. Benchmark comparisons demonstrate that the model captures the basic physics of phase change and diffusive transport, while it is quantitatively sensitive to specific model assumptions and implementation details. Given its performance and numerical stability, the model can be used to explore bubble behaviors across a broad parameter space relevant to therapeutic ultrasound.

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Inhibition of nonlinear acoustic cavitation dynamics in liquid CO2

Cited by 13 publications

References 26 publications

Sound-driven fluid dynamics in pressurized carbon dioxide

Sound-driven fluid dynamics in pressurized carbon dioxide

Influences of non-uniform pressure field outside bubbles on the propagation of acoustic waves in dilute bubbly liquids

A reduced-order, single-bubble cavitation model with applications to therapeutic ultrasound

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