Journal ArticleDOI
The physics of foam
Denis Weaire,R. Phelan +1 more
TLDR
In this article, a review of the recent progress in the study of liquid foams is presented, which further improves upon the approximation recently proposed by us, in accounting for the nonlinearity in the dependence of conductivity on liquid fraction.Abstract:
Some recent progress in the study of liquid foams is reviewed in outline. Calculations of foam conductivity are presented, which further improve upon the approximation recently proposed by us, in accounting for the nonlinearity in the dependence of conductivity on liquid fraction.read more
Citations
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Journal ArticleDOI
On dense granular flows.
TL;DR: A quantitative comparison between data coming from different experiments in the same geometry identifies the robust features in each case and a transverse analysis of the data across the different configurations allows to identify the relevant dimensionless parameters, the different flow regimes and to propose simple interpretations.
Journal ArticleDOI
A Generalized View of Foam Drainage: Experiment and Theory
TL;DR: 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.
Journal ArticleDOI
Simulations of flow through open cell metal foams using an idealized periodic cell structure
TL;DR: In this article, a new approach to modeling the flow through a porous medium with a well defined structure was presented, which entailed modeling an idealized open cell metal foam based on a fundamental periodic unit of eight cells and solving the flow in the three-dimensional cellular unit.
Journal ArticleDOI
Foam stability in the presence and absence of hydrocarbons: From bubble- to bulk-scale
TL;DR: In this paper, the effects of various surfactants and hydrocarbons with well-defined properties on foam stability were evaluated at both bulk and bubble-scale to investigate the foam stability in the presence and absence of three isoparaffins.
Journal ArticleDOI
Structure of random foam.
TL;DR: The Surface Evolver was used to compute the equilibrium microstructure of dry soap foams with random structure and a wide range of cell-size distributions and a novel parameter based on the surface-volume mean bubble radius R32 is used to characterize foam polydispersity.
References
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Journal ArticleDOI
The surface evolver
TL;DR: The Surface Evolver is a computer program that minimizes the energy of a surface subject to constraints that is represented as a simplicial complex.
Journal ArticleDOI
A counter-example to Kelvin's conjecture on minimal surfaces
Denis Weaire,R. Phelan +1 more
TL;DR: The β-tungsten structure as mentioned in this paper has a surface area that is approximately 0.3% less than that of Kelvin's structure, which is a counter-example of a structure analogous to that of some clathrate compounds.
A Counter-Example to Kelvin's Conjecture on Minimal Surfaces
Denis Weaire,R. Phelan +1 more
TL;DR: The β-tungsten structure as discussed by the authors has a surface area that is approximately 0.3% less than that of Kelvin's structure, which is a counter-example of a structure analogous to that of some clathrate compounds.
Journal ArticleDOI
The structure of singularities in soap-bubble-like and soap-film-like minimal surfaces
TL;DR: In this paper, a complete classification of the local structure of singularities in a wide class of two-dimensional surfaces in R3 collected under the adjective (M, i, a) minimal by Almgren [A3] was provided.