Liquid flow in foams

I. I. Gol'dfarb; K. B. Kann; I. R. Shreiber

doi:10.1007/BF01051894

Liquid flow in foams

I. I. Gol'dfarb, K. B. Kann, I. R. Shreiber

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

76 Scopus citations

Abstract

A model equation for describing liquid motion in a foam of polyhedral structure is proposed. A dimensionless parameter characterizing the structure of the foam, namely, the ratio of the volume energy densities of the capillary and gravitational forces, is introduced. When the gravitational forces predominate over the capillary forces, the out-flow process may be regarded as a kinematic wave that can be described by the Burgers equation. In the opposite case, the capillary absorption can be described by a quasilinear parabolic equation.

Original language	English
Pages (from-to)	244-249
Number of pages	6
Journal	Fluid Dynamics
Volume	23
Issue number	2
DOIs	https://doi.org/10.1007/BF01051894
State	Published - 1 Mar 1988

ASJC Scopus subject areas

Mechanical Engineering
General Physics and Astronomy
Fluid Flow and Transfer Processes

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abstract = "A model equation for describing liquid motion in a foam of polyhedral structure is proposed. A dimensionless parameter characterizing the structure of the foam, namely, the ratio of the volume energy densities of the capillary and gravitational forces, is introduced. When the gravitational forces predominate over the capillary forces, the out-flow process may be regarded as a kinematic wave that can be described by the Burgers equation. In the opposite case, the capillary absorption can be described by a quasilinear parabolic equation.",

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AB - A model equation for describing liquid motion in a foam of polyhedral structure is proposed. A dimensionless parameter characterizing the structure of the foam, namely, the ratio of the volume energy densities of the capillary and gravitational forces, is introduced. When the gravitational forces predominate over the capillary forces, the out-flow process may be regarded as a kinematic wave that can be described by the Burgers equation. In the opposite case, the capillary absorption can be described by a quasilinear parabolic equation.

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Liquid flow in foams

Abstract

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