Growing bubbles and freezing drops: depletion effects and tip singularities

Puente, O.R. Enriquez Paz y

doi:10.3990/1.9789036538145

Cited by 1 publication

(2 citation statements)

References 90 publications

(194 reference statements)

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“…Indeed, the radius evolution is proportional to the square root of time as expected for a diffusive growth, figure 5.3(a). However, the nominal value of the slope d /dx is lower than the theoretical one [145] and independent of d [99], caused by the influence of each bubble growing next to a neighbouring one and the rapid merging of the two concentration boundary layers [146]. In figure 5.3(b), we plot the theoretical dimensionless radius derivative (1/S * )d /dx = 1 [following the representation depicted in 34] and compare it with the experimental derivative.…”

Section: Diffusive Bubble Growthmentioning

confidence: 70%

“…Because the two neighbouring growing bubbles compete for the dissolved gas, their growth is influenced by the distance d separating them [99]. However, the corresponding concentration boundary layers growing around each bubble as √ πDt merge in one concentration layer from which both bubbles absorb gas from the very early stages of the bubbles growth.…”

Section: Diffusive Bubble Growthmentioning

confidence: 99%

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Bubbles on surfaces : diffusive growth and electrolysis

Soto¹

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The history effect on bubble growth and dissolution. Part 2. Experiments and simulations of a spherical bubble attached to a horizontal flat plate, J. Fluid Mech. 820, 479-510 (2017) † Experiments performance and analysis by Á. Moreno Soto and P. Peñas-López. Á. Moreno Soto wrote the experimental section of the article and its review. P. Peñas-López was the head of the project and took care of the numerical analysis and the writing. All the authors discussed the results and proofread the article. 2Gas depletion through single gas bubble diffusive growth * When a gas bubble grows by diffusion in a gas-liquid solution, it affects the distribution of gas in its surroundings. If the density of the solution is sensitive to the local amount of dissolved gas, there is the potential for the onset of natural convection, which will affect the bubble growth rate. The experimental study of the successive quasi-static growth of many bubbles from the same nucleation site described in this paper illustrates some consequences of this effect. The enhanced growth due to convection causes a local depletion of dissolved gas in the neighbourhood of each bubble beyond that due to pure diffusion. The quantitative data of sequential bubble growth provided in the paper show that the radius-versus-time curves of subsequent bubbles differ from each other due to this phenomenon. A simplified model accounting for the local depletion is able to collapse the experimental curves and to predict the progressively increasing bubble detachment times.

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Section: Diffusive Bubble Growthmentioning

confidence: 70%

Section: Diffusive Bubble Growthmentioning

confidence: 99%

Bubbles on surfaces : diffusive growth and electrolysis

Soto¹

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show abstract

Growing bubbles and freezing drops: depletion effects and tip singularities

Cited by 1 publication

References 90 publications

Bubbles on surfaces : diffusive growth and electrolysis

Bubbles on surfaces : diffusive growth and electrolysis

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