Drainage of single Plateau borders

Direct observation of rigid and mobile interfaces

Stephan A. Koehler, Sascha Hilgenfeldt, Eric R. Weeks, Howard A. Stone

Research output: Contribution to journalArticle

Abstract

Foam drainage varies with surfactant. We present direct measurements of the flow velocity profiles across single Plateau borders, which make up the interconnected channel-like network for liquid flow. For protein foams the interface is rigid, whereas small-surfactant foams show significant interfacial mobility. The results agree with a model that takes into account the shearing of the liquid-gas interface transverse to the flow direction. A significant consequence is that bubble size and liquid volume fraction in a foam affect the relative importance of surface rheology on the drainage behavior.

Original languageEnglish (US)
Number of pages1
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume66
Issue number4
DOIs
StatePublished - Oct 9 2002
Externally publishedYes

Fingerprint

Foam
drainage
borders
foams
plateaus
Surfactant
surfactants
Liquid
Liquid Flow
Rheology
liquid flow
Velocity Profile
liquids
shearing
rheology
Volume Fraction
Bubble
Transverse
bubbles
flow velocity

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Condensed Matter Physics
  • Physics and Astronomy(all)

Cite this

Drainage of single Plateau borders : Direct observation of rigid and mobile interfaces. / Koehler, Stephan A.; Hilgenfeldt, Sascha; Weeks, Eric R.; Stone, Howard A.

In: Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Vol. 66, No. 4, 09.10.2002.

Research output: Contribution to journalArticle

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