Drainage of single Plateau borders: Direct observation of rigid and mobile interfaces

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

doi:10.1103/PhysRevE.66.040601

Drainage of single Plateau borders: Direct observation of rigid and mobile interfaces

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

Physics of Fluids

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

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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 language	English
Article number	040601(R)
Number of pages	4
Journal	Physical review E: Statistical physics, plasmas, fluids, and related interdisciplinary topics
Volume	66
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevE.66.040601
Publication status	Published - 2002

Keywords

IR-44338
METIS-208930

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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.",

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AU - Koehler, Stephan A.

AU - Hilgenfeldt, Sascha

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AU - Stone, Howard A.

PY - 2002

Y1 - 2002

N2 - 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.

AB - 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.

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KW - METIS-208930

U2 - 10.1103/PhysRevE.66.040601

DO - 10.1103/PhysRevE.66.040601

M3 - Article

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M1 - 040601(R)

ER -

Drainage of single Plateau borders: Direct observation of rigid and mobile interfaces

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Keywords

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