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
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Journal ArticleDOI
Role of water-soluble polymer on foam-injection process for enhancing oil recovery
TL;DR: In this article, the foam injection process was performed in cores and the parallel-layered micromodel, respectively, and it was found that adding polymer to foam could not only effectively generate a viscous force, but also create a protective enclosure around the bubble (i.e., viscoelastic film).
Journal ArticleDOI
Surface shear rheology of hydrophobin adsorption layers: laws of viscoelastic behaviour with applications to long-term foam stability
Krassimir D. Danov,Gergana M. Radulova,Peter A. Kralchevsky,Konstantin Golemanov,Simeon D. Stoyanov +4 more
TL;DR: The developed approach to the rheological characterization of interfacial layers allows optimization and control of the performance of mixed protein adsorption layers with applications in food foams.
Journal ArticleDOI
The hydrophobic modification of kappa carrageenan microgel particles for the stabilisation of foams.
TL;DR: Lauric arginate was successfully bound to kappa carrageenan microgel particles and particles were surface-activated and adsorbed at the air/water interface, as shown by optical and confocal microscopy.
Journal ArticleDOI
Foam: a multiphase system with many facets.
TL;DR: This work highlights recent developments in foam drainage and foam rheology, emphasizing that many poorly understood features of other materials have precisely defined and quantifiable analogues in aqueous foams, where the only ingredients are well-known material parameters of Newtonian fluids and bubble geometry.
Journal ArticleDOI
Effects of Grain Size on Deformation in Porous Media
Xiaoming Zhang,Pejman Tahmasebi +1 more
TL;DR: In this article, the fluid system in deformable porous media undergoes deformation with the flow of fluid and is represented by a pack of spherical particles and simulated by discrete element method.
References
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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.