Pressure Waves Propagation in Gas-Liquid Foam

Orenbakh, Z.; Shreĭber, I. R.; Shushkov, G. A.

doi:10.1007/978-1-4615-9573-1_75

Cited by 5 publications

(5 citation statements)

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“…As obvious in Fig. 1 (upper part), many experimental results are in agreement with this prediction [26,30,33,35,49,50], but several publications reported velocities that are larger than Wood's prediction [28,29,31,32]. In their article, Zmashchikov and Kakutkina [29] noted that "This excess can be explained by assuming that not all the liquid participates in the transmission of sound waves."…”

Section: Acoustic Properties 21 Analysis Of the Experimental Resultsupporting

confidence: 61%

“…In several studies, the attenuation was found to increase with frequency [31,26] and with the mean radius of the bubbles [31,28]. The proposed scaling laws were sometimes compatible with a mechanism of thermal losses [31,37], but other studies did not find the expected trend in the attenuation when the gas of the foam was changed [25,38]. Other dissipation mechanisms were proposed, based on Darcy-like flow in the Plateau borders [27] or nonlinear viscous dissipation in the films [36].…”

Section: Acoustic Properties 21 Analysis Of the Experimental Resultmentioning

confidence: 99%

“…Still in the spirit of monitoring transport properties, the propagation of a sound wave inside a foam has been often proposed as a possible tool to obtain information on R or f l . This was initially motivated by the studies on shock waves absorption in foams [24,25,26,27], which showed that f l and R had a strong influence on the acoustical properties of foams.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Acoustics of Liquid Foams

Elias

Crassous

Derec

et al. 2020

Current Opinion in Colloid & Interface Science

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Beside other transport properties of liquid foams, like the optical or electrical ones, the acoustics of liquid foams reveals a great complexity and non-trivial features. Here we present a review of recent experimental and theoretical results on how a sound wave interacts with either a macroscopic foam sample or with its isolated building blocks (films and Plateau borders). The analysis of the literature allows us to determine what is now well understood, what could be measured in foams by acoustics, and what are the remaining issues and perspectives in this research field.

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Section: Acoustic Properties 21 Analysis Of the Experimental Resultsupporting

confidence: 61%

Section: Acoustic Properties 21 Analysis Of the Experimental Resultmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Acoustics of Liquid Foams

Elias

Crassous

Derec

et al. 2020

Current Opinion in Colloid & Interface Science

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“…Recently, Mujica and Fauve measured the sound velocity in a shaving foam and studied the aging and frequency dependence of the sound propagation. [14] They found that sound velocity decreases from 65 to 53 ms −1 with coarsening foam, which was comparable to the experimental measurements by Orenbakh and Shushkov in a liquid with the gas volume fraction up to 0.95, [15] and moreover the sound absorption varies significantly with both the foam age and the excitation frequency. We note that during the coarsening in the above experiments the bubble radius ranges from 15 to 50 µm.…”

supporting

confidence: 80%

Sound Velocity in Soap Foams

Gong-Tao¹,

Yong-jun²,

Liu³

et al. 2012

Chinese Phys. Lett.

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The velocity of sound in soap foams at high gas volume fractions is experimentally studied by using the time difference method. It is found that the sound velocities increase with increasing bubble diameter, and asymptotically approach to the value in air when the diameter is larger than 12.5 mm. We propose a simple theoretical model for the sound propagation in a disordered foam. In this model, the attenuation of a sound wave due to the scattering of the bubble wall is equivalently described as the effect of an additional length. This simplicity reasonably reproduces the sound velocity in foams and the predicted results are in good agreement with the experiments. Further measurements indicate that the increase of frequency markedly slows down the sound velocity, whereas the latter does not display a strong dependence on the solution concentration.

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“…Most theoretical approaches on blast wave absorption disregard the foam structure, and focus only on the role of the liquid fraction [16]. In the acoustic pressure range however, several studies clearly established the important role of the bubble size on the sound propagation, both theoretically and experimentally [17][18][19][20][21][22].…”

mentioning

confidence: 99%

Influence of bubble size and thermal dissipation on compressive wave attenuation in liquid foams

Monloubou¹,

Saint‐Jalmes²,

Dollet³

et al. 2015

EPL

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Acoustic or blast wave absorption by liquid foams is especially efficient and bubble size or liquid fraction optimization is an important challenge in this context. A resonant behavior of foams has recently been observed, but the main local dissipative process is still unknown. In this paper, we evidence the thermal origin of the dissipation, with an optimal bubble size close to the thermal boundary layer thickness. Using a shock tube, we produce typical pressure variation at time scales of the order of the millisecond, which propagates in the foam in linear and slightly non-linear regimes.

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Pressure Waves Propagation in Gas-Liquid Foam

Cited by 5 publications

References 0 publications

The Acoustics of Liquid Foams

The Acoustics of Liquid Foams

Sound Velocity in Soap Foams

Influence of bubble size and thermal dissipation on compressive wave attenuation in liquid foams

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