Foam Consolidation and Drainage

Jun, Seongchul; Pelot, D. D.; Yarin, Alexander L.

doi:10.1021/la300412u

Cited by 38 publications

(28 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bending deformations of the elastic envelopes displace water from the foam space, as in the case of conventional foam drainage (Jun et al . ). A conventional polyhedral liquid foam is stabilized by a disjoining pressure in the thin lamellae of the foam (Kornev et al .…”

Section: Discussionmentioning

confidence: 97%

“…Therefore, the hydrate envelope can be easily deformed when bubbles contact each other. Bending deformations of the elastic envelopes displace water from the foam space, as in the case of conventional foam drainage (Jun et al 2012). A conventional polyhedral liquid foam is stabilized by a disjoining pressure in the thin lamellae of the foam (Kornev et al 1999); a polyhedral solid hydrate foam is stabilized by a thin hydrate layer on the boundary of the gas phase.…”

Section: Second Controlling Factor Of Bubble Transformationmentioning

confidence: 99%

See 1 more Smart Citation

Transformation of deep‐water methane bubbles into hydrate

2014

View full text Add to dashboard Cite

The paper is dedicated to the mechanics of the methane bubbles in the gas hydrate stability zone of the basin. Transformation of deep-water methane bubbles into solid hydrate was investigated in Lake Baikal in situ. Released from the bottom methane bubbles were caught by different traps with transparent walls. It was observed that when bubbles entered into internal space of the trap, the bubbles could be transformed into two different solid hydrate structures depending on ambient conditions. The first structure is hydrate granular matter consisted of solid fragments with sizes of order of 1 mm. The second structure is high porous solid foam consisted of solid bubbles with sizes of order of 5 mm. The formed granular matter did not change during trap lifting up to top border of gas hydrate stability zone, whereas free methane intensively released from solid foam sample during it lifting. It was concluded that the decrease of the depth of bubble sampling and the decrease of the bubble flux rate assist to formation of hydrate granular matter, whereas increase of the depth of bubble sampling and growth of bubble flux rate assist to conversation of bubbles into high porous solid hydrate foam.

show abstract

Section: Discussionmentioning

confidence: 97%

Section: Second Controlling Factor Of Bubble Transformationmentioning

confidence: 99%

Transformation of deep‐water methane bubbles into hydrate

2014

View full text Add to dashboard Cite

show abstract

“…In the case of foams built up by Newtonian liquids, equations of drainage were deduced using the combination of the liquid momentum and mass balance equations [4][5][6][7][8]. The drainage equations in the case of Newtonian liquids have been solved numerically and/or analytically in different prototype situations including free drainage [4][5][6][7][8][9], where liquid drains out of a foam due to the influence of gravity and capillarity; wetting of a dry foam [10,11], where a dry foam is in contact with a liquid at its base; forced drainage [8,9,[12][13][14], where liquid is added to the top of foam column producing a traveling wave; and pulsed drainage [8,[15][16][17], where a small volume of liquid is injected to the top of a foam and left to evolve. A new type of these situations is the case of foam drainage placed on a porous substrate [18,19], where foam is deposited on a porous substrate and the presence of unsaturated pores inside the porous substrate results in an imbibition of liquid from the foam into the unsaturated pores.…”

Section: Introductionmentioning

confidence: 99%

Foams built up by non-Newtonian polymeric solutions: Free drainage

Arjmandi-Tash

Trybała

Mahdi

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

A mathematical model of free drainage of foam built up by a power-law non-Newtonian liquid is developed. The theory predictions are compared with the experimental data on the drainage of foams formed using commercially available AculynTM22 and AculynTM33 polymeric solutions. The rheological parameters of the polymeric solutions were independently measured and used in the calculations. The deduced dimensionless equations were solved using finite element method with appropriate boundary conditions. The numerical simulations show that the decrease in the foam height and liquid content is very fast in the very beginning of the drainage; however, it reaches a steady state at longer time. The predicted values of the time evolution of the foam height and liquid content are in good agreement with the measured experimental data. were solved using finite element method with appropriate boundary conditions. The numerical simulations show that the decrease in the foam height and liquid content is very fast in the very beginning of the drainage; however, it reaches a steady state at longer time. Graphical AbstractThe predicted values of the time evolution of the foam height and liquid content are in good agreement with the measured experimental data.

show abstract

“…The properties of both phases (and the components in the phases) control the dynamics of foam behaviour and eventually affect foam longevity. While many studies have shown the impact of the components of the aqueous phase on foam stability [1,[4][5][6][7][8][9], the effect of type and composition of the gaseous phase has received less attention.…”

Section: Introductionmentioning

confidence: 99%

“…4 Calculated using (1). 5 Perry's chemical engineering handbook, chapter 2 [48]. 6 Calculated by (7) of Norman et al, 1954 [49].…”

Section: Introductionmentioning

confidence: 99%

Effect of Gas Permeability and Solubility on Foam

Farajzadeh

Vincent-Bonnieu

Bourada

2014

Journal of Soft Matter

View full text Add to dashboard Cite

We perform a study on the influence of gas permeability and solubility on the drainage and stability of foam stabilized with an anionic surfactant. Our study compares the foam stability for four pure gases and two gas mixtures while previous works only compared two pure gases. Drainage and foam-volume-decay rates are calculated from the experimental data and analysed. We find good agreement with existing theory as the foam stability is strongly influenced by the properties of the gas phase, in particular its solubility in the aqueous phase (measured by Henry’s solubility constant,kH) and permeability (measured by foam-film permeability coefficient,K). The foam volume decreases considerably with increasingK. Moreover, we observe that foams are more stable when a less soluble gas is added to a more soluble gas. Our analysis confirms theories linking drainage, stability, and coarsening rate. Finally, we introduce a new formulation for the foaming index that considers gas solubility and permeability.

show abstract

Foam Consolidation and Drainage

Cited by 38 publications

References 22 publications

Transformation of deep‐water methane bubbles into hydrate

Transformation of deep‐water methane bubbles into hydrate

Foams built up by non-Newtonian polymeric solutions: Free drainage

Effect of Gas Permeability and Solubility on Foam

Contact Info

Product

Resources

About