Journal ArticleDOI
A Generalized View of Foam Drainage: Experiment and Theory
TLDR
In this paper, a new experimental method is presented using fluorescein dye to determine the spatial and temporal variations of the liquid volume fraction in aqueous foams This method was used for quantitative studies of liquid redistribution (drainage) in three types of experiments: forced, free, and pulsed drainage Characteristic quantities, such as the drainage velocity, show power-law dependences on experimental parameters that are inconsistent with traditional foam drainage models based on Poiseuille-type flow in the liquid-carrying channels (Plateau borders) of the foam.Abstract:
A new experimental method is presented using fluorescein dye to determine the spatial and temporal variations of the liquid volume fraction in aqueous foams This method is used for quantitative studies of liquid redistribution (drainage) in three types of experiments: forced, free, and pulsed drainage Characteristic quantities, such as the drainage velocity, show power-law dependences on experimental parameters that are inconsistent with traditional foam drainage models based on Poiseuille-type flow in the liquid-carrying channels (Plateau borders) of the foam To obtain a theoretical description, the foam drainage equation is generalized using an energy argument which accounts for viscous dissipation in both the channels and the nodes (or vertices, which are the junctions of four channels) of the liquid network Good agreement with results for all three types of drainage experiments is found when using this new model in the limit where the dissipation is dominated by the nodesread more
Citations
More filters
Journal ArticleDOI
Interaction of liquid foams with porous substrates
TL;DR: In this article, the authors review the most recent studies of drainage/imbibition of foams placed on porous substrates: the latest theoretical models, simulation studies and experimental observations.
Journal ArticleDOI
Experimental investigation of liquid foams by polarised light scattering technique via the Mueller matrix
Shaoyu Qian,John J. J. Chen +1 more
TL;DR: In this article, the effect of foam properties on the Mueller matrix was investigated and it was found that the effect was more obvious when the foam was in a static state and when the bubble size distribution was kept almost constant during the drainage process.
Journal ArticleDOI
Highly viscous liquid foam for oil-displacement: Surface & phase behavior enhancement
TL;DR: In this article , polysaccharides (XG) and alkyl polyglucoside (APG) were combined to produce a highly stable foam in both surface and liquid phase, and specific characteristics created by XG/APG were investigated from the aspects of bulk foam stability, coarsening behavior and foam viscoelasticity.
Journal ArticleDOI
In-situ observation of collective bubble collapse dynamics in a quasi-two-dimensional foam
Naoya Yanagisawa,Rei Kurita +1 more
TL;DR: The dynamics of the collective bubble collapse in a quasi-two-dimensional foam is clarified by in-situ observation with a high speed camera and two modes are found: propagation of liquid film breakage via impact with the stream of another broken liquid film and breakage of a distant liquid film due to penetration by a liquid droplet.
Journal ArticleDOI
Enhancing foam drainage by spiral internal components of different thread pitches and inclined angles and their applications to enrichment of SDS
TL;DR: In this article, the effects of thread pitch and inclined angle on foam drainage were investigated and the results showed that the decrease of the thread pitch, and the increase of the inclined angle contributed to more enhancement of foam drainage.
References
More filters
Book
Physical chemistry of surfaces
TL;DR: In this paper, the authors discuss the nature and properties of liquid interfaces, including the formation of a new phase, nucleation and crystal growth, and the contact angle of surfaces of solids.
Journal ArticleDOI
Stokes flow through periodic arrays of spheres
A. A. Zick,George M. Homsy +1 more
TL;DR: In this paper, the problem of slow flow through a periodic array of spheres was formulated as a set of two-dimensional integral equations for the unknown surface stress vector, thus lowering the dimension of the problem.
Journal ArticleDOI
LXIII. On the division of space with minimum partitional area
TL;DR: In this article, the division of space with minimum partitional area is discussed, and the authors propose a solution to the problem of partitioning space with a minimum number of partsitional areas.
Journal ArticleDOI
The foam drainage equation
TL;DR: In this paper, the authors review the history and recent development of this theory, analysing various exact and approximate solutions and relating them to each other, and propose a nonlinear partial differential equation for the foam density as a function of time and vertical position.